You2Toys Anal Pusher: review

You2Toys Anal Pusher at a glance — here’s what you get

You2Toys Anal Pusher is an anal plug that does two things at the same time: it vibrates and it thrusts. The thrust function is the whole point of this model—and what also explains the name: the plug is pushed rhythmically up and down by a motor inside the shaft, instead of staying still. The manufacturer is ORION, a German erotic wholesaler that sells this item under its own You2Toys brand, and on ORION’s own pages the product is listed under item number 05759500000.

The specification looks like this: seven vibration modes placed at the tip, three thrust speeds, a cable-connected control module, a strong suction foot at the bottom, total length 16 centimeters, diameter between 3 and 4.5 centimeters, weight 376 grams, and material TPE. Operation requires four AA batteries that are not included in the delivery. The manufacturer’s suggested retail price is 79.95 euro, but in Sweden the item is sold by five stores at prices between 421 and 699 SEK, and four of them have it in stock.

This desk review covers the black variant with EAN 4024144579273. The number has been verified against the manufacturer’s product page, where item 05759500000 is shown with that exact barcode, and all five Swedish stores list the same EAN. It’s worth checking, since the stores sell the product under four different names and three different item numbers—more about that further down.

What a thrust function is, and how it differs from vibration

Vibration and thrust function are two completely different mechanical principles, and they’re often mixed up in store texts. A vibration motor is a small electric motor with an unbalanced weight on the shaft. When it spins, it creates a fast shaking that travels through the material to the skin. The frequency is high and the movement is minimal—fractions of a millimeter.

A thrust function works the other way around. Here, a motor is used to convert rotation into back-and-forth movement via a mechanism, roughly like a crankshaft in a piston engine. The movement is slow but long: the entire inserted part is pushed in and pulled out again, over and over. That’s the movement the manufacturer describes when ORION writes about three thrust speeds, and that’s also why a store called Lekosmek simply refers to the product as "Analplugg Up And Down".

What can be established is that the two functions stimulate different things. The vibration reaches nerve endings lying superficially nearest the tip — ORION explicitly states that the vibration motor is located in the shaft tip, and Taboo repeats the same claim. The thrusting motion, instead, works against the entire anal canal and against the prostate of the person wearing it. That both functions can be controlled independently of each other means that you get seven vibration modes times three thrust speeds, i.e. 21 combinations, plus the option to run only one of them.

Motors for the thrusting function draw significantly more current than vibration motors, because they have to move mass instead of just shaking it. That is the technical explanation for why this product is powered by four AA cells in a separate module and not by a small built-in battery. The construction is old-fashioned, but it’s also the reason a thrusting function at all fits within this price range.

Anal Pusher, Up And Down, or Vibro-Plug — same article, four names

Few products in this category show as clearly why the EAN number is more important than the product name. The same article is sold in Sweden under at least four different designations, and three shops also list three different article numbers.

• Joyland — "You2Toys: Anal Pusher, Vibrating Anal Plug", article number 14861.
• Vuxen — "Anal Pusher", article number 0575950, i.e. the manufacturer’s number without the four trailing zeros.
• Lekosmek — "Analplug Up And Down", article number 5759500000.
• Taboo — on the product card "You2Toys Thrusting Analplug" and in the sidebar title "Buttplug — Anal Pusher, self-thrusting anal plug".
• Vuxenkul — "Vibro-Plug Anal Pusher", article number OR0930-1.

All five list EAN 4024144579273, and that’s the only thing that ties them together. If you compare prices by product name in this category, you’re basically comparing random shop headings. If you compare by EAN, you know it’s the same article, the same color, and the same packaging.

Materials and build quality: TPE all the way

The material question is the single most important line in a specification for a product that is meant to lie against the mucous membrane, and it’s also the one that determines how long the product can be kept hygienic. ORION states a single material for the Anal Pusher: TPE. The same information is repeated on the manufacturer’s consumer page and at four of the five Swedish shops. Vuxenkul and Lekosmek list TPE, Joyland lists TPE, and Lekosmek specifies it as "thermoplastic elastomer".

What TPE means in practice — and why it isn’t silicone

TPE stands for thermoplastic elastomer and is a family of materials that behaves like rubber but can be melted and injection-molded like plastic. It is cheaper to manufacture than silicone, it can be made in widely different hardness levels, and that is why it dominates the lower half of the price range in this product category.

ORION:s own material knowledge page is unusually candid about the downsides, and it is worth quoting because it is the manufacturer’s own words and not an outsider’s assessment. It states that TPE has high durability and is free from phthalates, but also that the material does not glide particularly well without lubricants, that plasticizers in the form of mineral oil over time migrate out of the material so that the surface becomes partly oily or tacky, that it can leave grease stains, and that it becomes firmer and possibly brittle with age. The manufacturer recommends a specific care powder to keep TPE items fresh for longer.

That is the crucial difference versus silicone. Silicone is a non-porous material that does not release plasticizers, because the softness comes from the polymer’s own structure. TPE is not non-porous in the same way, and the seeping-out mineral oil means that the surface changes over time. What can be concluded is that a TPE product has a limited lifespan as a hygiene item even if it never breaks—and that, unlike a silicone product, it cannot handle boiling or aggressive disinfection. The manufacturer’s customer information also makes it clear that the product must neither be frozen nor heated.

Practically speaking, it means three things. Always use plenty of lubricant, because TPE doesn’t glide on its own. Clean after every use, because a surface that becomes oily also becomes harder to get clean. And store the product separately—the manufacturer explicitly writes that it should be stored away from products made of other materials to avoid chemical reactions, which in practice means it shouldn’t be kept in the same drawer as silicone toys.

Phthalates, body safety, and what the stores actually promise

Phthalates are a group of plasticizers used to make plastic—above all soft PVC—flexible. Kemikalieinspektionen describes them as substances that can affect the hormone system and make reproduction more difficult, and several of them are therefore restricted or banned within the EU. This particular product category is a recurring subject of oversight because it contains soft, plastic material against the mucous membrane.

ORION states on its materials page that TPE and TPR as a material group are free from phthalates, and the same commitment is made on the Swedish listing too: Joyland has its own row in its specification table where it says "Phthalate-free: Yes", and Vuxen writes "Body-safe & Free from Phthalates". It’s consistent, and it’s a clearer declaration than terms like "jelly rubber", which says nothing at all about which plasticizers are included.

What, however, is missing is a material declaration per component. ORION states TPE as the product’s material but publishes no material for the control module, the suction foot, or the cable, and no store fills the gap. Compared with the same manufacturer’s ANOS Remote Controlled Butt Plug, where the material is given as "Silicone, ABS, PU", this shows that ORION provides a breakdown of materials when they have it. The fact that it’s absent here is therefore a deliberate choice, not an oversight in the web template.

Two store details in particular deserve a warning flag, because they contradict each other. Joyland states the hardness as "Soft" while Vuxen states the stiffness as "Firm (stable)"—two stores, the same EAN, opposite messages. ORION itself publishes no hardness information at all, so neither of them can be confirmed. Vuxen also lists "Jelly-like material" as one of its selling points, despite the store’s own fact box further down on the same page stating TPE. "Jelly" is the older trade designation for plasticized PVC, which ORION describes in its material knowledge as a different material than TPE. So read that line as marketing, not as a material claim.

Dimensions and weight: 16 centimeters, Ø 3–4.5 centimeters, and 376 grams

ORION lists the total length as 16 centimeters and the diameter as between 3 and 4.5 centimeters. The weight is given as 376 grams and the packaging as 13 × 7.2 × 20.5 centimeters. All five Swedish stores reproduce 16 centimeters, and Vuxen also splits the diameter into a minimum of 3 centimeters and a maximum of 4.5 centimeters—which matches the shape, which is conical at the tip and swells out to its widest point a bit down the shaft.

The weight information of 376 grams deserves a note, because none of the five Swedish stores publishes any weight at all. This makes the manufacturer’s figure the only one that exists, and it should be read as it is: 376 grams is a lot for an anal plug. For comparison, ORION lists 280 grams for its own ANOS Remote Controlled Butt Plug, and NS Novelties lists 288 grams for Renegade Apex. What those 376 grams include—only the plug, or the plug plus the control module and the cable—ORION does not specify.

The measurement of 4.5 centimeters in diameter is the figure that should determine the purchase. It corresponds to a circumference of roughly fourteen centimeters, and it places the product in the upper half of what is sold as an anal plug. The manufacturer describes it as suitable for anyone who wants a properly full sensation, and Joyland states outright that the size makes it especially popular among experienced users. ORION’s own customer information for the item also includes an instruction worth taking seriously: gently stretch the anal sphincter muscle in advance, start with toys with a smaller diameter, and increase the size gradually.

The shape is conical at the tip and has what the manufacturer calls the Reizrillen, stimulating ridges—a section with parallel rings just below the tip—as well as a thickening farther down. ORION states that the conical tip should make insertion easier and that the ridges and thickening should create a full sensation. The base is a wide suction foot, and it also functions as a stopper.

The insertable length is not published by the manufacturer, and no shop lists it either. It’s a significant gap for this exact product type, because the suction foot, the lower part of the shaft, and the movement clearance of the thrust mechanism all take up parts of the 16 centimeters. That ORION provides both the total length and the insertable length for the ANOS plug—15.1 and 12 centimeters, respectively—shows that the information exists in their system when they want to report it.

Seven vibration modes, three impact speeds, and a cable

The interface consists of a handheld control module that is fixed to the plug with a cable. In the manufacturer’s own product image, three touch areas are visible on the module: a power symbol at the very top, a wave symbol in the middle, and an up- and down-arrow at the bottom. ORION states that there are seven vibration modes at the tip and three impact speeds, and that they can be controlled separately.

Joyland breaks the same thing down in its specification table as “Vibration modes: 7 different steps” and “Pulsing modes: 3 different modes.” The shop’s wording is unfortunate: the three modes are impact speeds, not pulsing vibration patterns—but the numbers match the manufacturer’s. Vuxenkul describes the same thing as “3 impact modes” and “7 vibration modes,” which is the more correct phrasing.

Control module: that’s why the word “remote control” is misleading

This is where the most noticeable difference appears between what the manufacturer writes and what the shops write, and it affects how the product actually works.

ORION is unambiguous. On the manufacturer’s German product page, it says "Mit Steuermodul an langem Kabel" — with a control module on a long cable — and in the English text "With a remote control on a wire". The consumer page has its own bullet point that reads "Kabelgebundene Bedienung", meaning wired control. Vuxenkul translates the same thing into Swedish correctly as "Styr lätt med trådbundna kontrollen", and Vuxen states in its fact box "Fjärrkontroll detaljer: Hand control".

Two shops, however, do not. Lekosmek describes the control unit as a remote control and also writes in its safety tips that you should "check that the remote control is correctly synced with the plug before use", which is an instruction for a wireless product and cannot be correct for this article. Taboo says that the plug is "controlled easily with a remote control" without mentioning the cable. When the shop and the manufacturer contradict each other, the manufacturer wins, and the discrepancy is noted: there is no radio link to sync and no range to talk about. The cable determines how far the module reaches.

The consequence is practical and goes both ways. The downside is obvious — a cord in the way, no possibility for a partner to control it remotely, and a cable entry point that is the natural weak spot of the entire product. The advantage is that a cable-connected module cannot lose contact, does not need to be paired, and does not have its own button-cell battery that runs out. Compare ORION’s own ANOS Remote Controlled Butt Plug, where the wireless remote control is stated to reach up to twelve meters but it requires a CR2032 battery to work.

The suction cup: the function that actually sets the model apart

The base is a suction foot, and the manufacturer places great emphasis on it. ORION describes it as strongly adhering — "stark haftende Saugfuß" in the German text and "strong grip suction base" in the English — and the Swedish shops that write about it use the same wording. Vuxenkul calls it "mycket stark sugkoppsbas", Taboo "stark sugpropp".

It is the suction foot, in combination with the bumping function, that makes this product something other than a normal vibrating plug. When attached to a smooth surface, the plug works by itself, without anyone having to hold it. The manufacturer’s customer information specifies the conditions: the surface should be smooth, clean, and dry, and the suction cup should be carefully released afterwards. In practice, that means tile, the edge of a bathtub, a floor panel, or a mirror — not a painted wall, not wood, and not textiles.

There is one detail to be aware of. A suction cup that is attached to the floor means that body weight determines how far the product goes, and the impact motor continues working regardless of what happens. ORION’s own customer information points out in its general section that anal toys without stoppers should always be kept fixed in place—here there is, admittedly, a broad base that functions as a stopper, but the control argument still applies. Start by attaching it to a vertical surface where you control the pressure yourself, rather than on the floor horizontally.

Insertion, lubricant, and the manufacturer’s own instructions

ORION publishes complete customer information as a PDF for this specific item, and it is more concrete than what most manufacturers in this price range offer. The order given is: apply plenty of lubricant, turn on the product before it is inserted, assume a comfortable position—on all fours, on your back with a pillow under your butt, or crouching over the product—and then slowly insert it.

The manufacturer points out that the anal canal has two muscle rings that the product must pass, and that’s why you should go slowly and, if necessary, relax in advance. The lubricant should be water-based. It’s the same recommendation that ORION gives for TPE in general, and it’s correct for two reasons: TPE glides poorly without help, and silicone-based lubricant should, as a matter of principle, not be combined with soft elastomers because it can affect the surface.

A recommendation that few stores repeat, but that is stated in the manufacturer’s own text on the consumer page, is that the product can also be used externally. ORION describes how the plug can be used to massage the prostate from the outside, via the perineum between the anus and scrotum, and that it can also be used for the G-spot. This kind of use changes the safety assessment significantly for someone who thinks that 4.5 centimeters in diameter is too much.

Water tightness: here the answer is unambiguous no

This product is not waterproof, and it is well supported.

ORION’s consumer page answers the question "Wie reinige ich den Anal Pusher?" by stating that it is cleaned with water and mild soap, followed by a warning: make sure that no water gets into the battery compartment. The manufacturer’s customer information for the article goes even further and states in two places that no water may reach the battery compartment and that the unit must not be immersed in water. Vuxen lists "Waterproof: No" in its information box, and Vuxenkul "Water resistant: No". So manufacturers and stores are saying the same thing, which is unusual enough to deserve mention.

ORION does not publish any ingress protection rating under the IP system for this item. That in itself is a clear, consistent message: the IP rating according to IEC 60529 indicates how well an enclosure protects against dust and water, and a product with a battery compartment that is supposed to be kept dry simply has nothing to report in the second digit. If there is no IP information, a product should always be treated as not waterproof—the absence of a rating is never a sign that the product would be approved.

Cleaning, storage, and the mistakes that cost the product its life

The manufacturer’s care instructions are detailed and should be followed word-for-word, because two of them are hard to figure out on your own.

Clean after every use with warm water and mild soap, and disinfect if needed with a product intended for the device—but keep the battery compartment dry and never submerge the unit. In practice, that means the plug is washed by hand with a cloth, not kept under running water. Let the product cool down before putting it away, and store it in a clean, cool, and dry place out of direct sunlight, because moisture damages both the batteries and the motor.

The two instructions that are actually hard to come up with yourself are these. First: store the product separately from products in other materials to avoid chemical reactions. TPE against soft PVC in the same box is a classic way for both surfaces to end up sticky. Second: remove the batteries after every use. The manufacturer states this explicitly as a way to extend the batteries’ life and avoid damage to the product, and for an article powered by four alkaline AA cells, the risk of leakage during long-term storage is real.

Battery and operation: four AA cells that are not included

Anal Pusher is not rechargeable. It runs on four AA batteries, and ORION states on both the wholesaler and consumer side that the batteries are not included and must be ordered separately. All five Swedish stores repeat the same thing—Joyland specifies the battery type as "AA (LR6)", meaning standard alkaline mignon cells.

How long do the batteries last in You2Toys Anal Pusher?

ORION publishes no operating time for this item, neither in hours nor minutes, and none of the five Swedish stores provides any value either. So it isn’t possible to say how long four AA cells will last, and every number that circulates on other websites lacks support from the manufacturer.

What can be established generally is that a thrust motor draws significantly more current than a vibration motor, because it performs mechanical work instead of simply shaking a weight. If you run only the vibration, the cells last longer than if you run the thrust function, and if you run both at the highest speed, they last the shortest time. A realistic approach is to have an extra four-pack on hand and to expect the thrust speed to drop noticeably before the cells are completely used up—voltage gradually falls in alkaline batteries, and a motor that works against mechanical resistance notices it earlier than a vibration motor does.

Battery operation also has an advantage that’s easy to forget. A product with replaceable cells doesn’t become unusable when a fixed-in lithium-ion battery loses capacity, which is the most common cause of death for rechargeable toys. As long as the motor and the cable last, you can keep this product running with new batteries—and they cost a fraction of what a new built-in battery would cost, if it were even possible to replace it.

How loud is it?

The manufacturer does not publish any measured decibel value for Anal Pusher, and none of the stores does either. No one even comments on the sound level in the main text, which is worth noting for a product that contains a mechanical thrust motor.

The only thing that can be said in principle is this: a motor that moves mass back and forth generates more structure-borne sound than a motor that only shakes, and a product that’s stuck to a hard surface transfers its sound to the substrate just like a speaker against a tabletop. If you want to keep the sound level down, a soft surface under the suction surface is the only practical piece of advice that applies regardless of the model—but you can’t give a number, and a number without measurement is worthless.

You2Toys Anal Pusher compared with the alternatives

Three comparisons are relevant: against the expensive reference product in the same niche, against a rechargeable silicone model in roughly the same price range, and against what the same manufacturer itself offers higher up in its own lineup. All the information below comes from the respective manufacturers’ own product pages, and all prices come from the stores’ product feeds on July 29, 2026.

Against Anal Fantasy Elite Vibrating Ass Thruster — 574 SEK and a completely different design

Pipedreams Anal Fantasy Elite Vibrating Ass Thruster costs from 995 SEK, i.e. 574 SEK more than Anal Pusher at its cheapest. It’s the obvious reference, because it does exactly the same thing—vibrates and thrusts—but solves it in a completely different way.

Pipedream has seven vibration patterns and seven thrusting modes against You2Toys’s seven and three. It’s controlled with a wireless remote control instead of a cable-connected module. It’s USB-rechargeable with a two-hour operating time on a 1.5-hour charge—meaning a published operating time, which Anal Pusher lacks. It also has an internal heating core that heats the shaft to 40 degrees, a removable suction-cup base with an adjustable tilt screw, and a one-year manufacturer’s warranty.

So the price difference corresponds to wireless control, a rechargeable battery with stated operating time, more than twice as many thrusting modes, a heat function, and an adjustable base. What speaks in favor of You2Toys is the price and the battery type: a product powered by four AA cells can be run for years on new batteries, while Pipedream’s built-in cells set a far-off limit for the product’s lifespan. What speaks against it is basically everything else.

Against NS Novelties Renegade Apex — silicone for the same price as TPE

NS Novelties Apex Thrusting & Vibrating Prostate Massager, which the manufacturer itself calls Renegade Apex, costs from 695 SEK. That’s exactly what Lekosmek and Taboo charge for Anal Pusher, which makes the comparison above unusually straightforward.

NS Novelties lists silicone, a rechargeable battery, a wireless remote control, as well as six speeds and eight functions. The product weight is given as 288 grams, and the model number as NSN-1101-79. It’s a smaller and lighter product that’s aimed at the prostate and scrotum rather than at a full sensation.

The conclusion becomes uncomfortable for You2Toys. For 695 SEK, you can get silicone instead of TPE, a rechargeable battery instead of four AA cells that you buy separately, and a wireless remote control instead of a cord. What Anal Pusher still has is size—16 centimeters and 4.5 centimeters in diameter versus Apex being significantly slimmer—and the suction foot. So if you pay 695 SEK for Anal Pusher, you’re paying a steep premium. If you pay 421 SEK at Joyland, the calculation is completely different.

Against ANOS Remote Controlled Butt Plug — same manufacturer, different answer

The most illuminating comparison is with ORION’s own alternative, one step up. ANOS Remote Controlled Butt Plug has item number 05507600000 and a recommended consumer price of 69.95 euro, i.e. ten euro less than Anal Pusher’s 79.95 euro.

For the lower price ORION lists silicone, ABS and PU instead of TPE, a rechargeable battery with a USB charging cable instead of four AA cells, a wireless remote control with a twelve-meter range instead of a cord, ten vibration and rotation modes, total length 15.1 centimeters, insertable length 12 centimeters, maximum diameter 4.2 centimeters, and weight 280 grams.

That says two things. First, that ORION reports insertion length, material breakdown, and charging method when the product has them—so the inserts in Anal Pusher’s datasheet reflect the product, not the manufacturer’s level of ambition. Second, that Anal Pusher is no longer the manufacturer’s technically most advanced anal plug. What it still has going for it—and what the ANOS model doesn’t—is the impact/stud function. If you want a plug that moves on its own power, it’s still Anal Pusher that applies within the brand.

Price range: 421 to 699 SEK for the same item number

Five Swedish stores sell the item with EAN 4024144579273. The cheapest is Joyland at 421 SEK, and the most expensive is Vuxenkul at 699 SEK. That’s a difference of 278 SEK, or 66 percent, for exactly the same item, same color, and same packaging.

The inventory situation is unusually good in this case. Four of the five stores had the product in stock at the time of the price check—all except Vuxenkul, which is also the most expensive at the same time. The difference between the cheapest and the next-cheapest available is 58 SEK: Joyland at 421 SEK and Vuxen at 479 SEK. After that, the price jumps to 695 SEK at both Lekosmek and Taboo.

So the price picture splits into two clear levels, and that’s the only piece of information on the entire page that can directly save you money: 421–479 SEK at the two cheapest, 695–699 SEK at the three most expensive. The 274 SEK difference between Joyland and Taboo corresponds to a sixty-five percent markup without anything in the product being different. The manufacturer’s recommended consumer price is 79.95 euro, which means all of the Swedish stores are below it—but the gap down to Joyland’s price is significantly larger than the gap to the others’ prices.

The prices in the table above are updated when the stores’ product feeds are updated, but always check the final price at checkout. Also factor in four AA batteries in your budget—they’re not included, and without them the product does absolutely nothing.

Who is You2Toys Anal Pusher for—and who isn’t it for?

It’s for you if you specifically want an impact/stud function and not just vibration, and if you don’t want to pay almost a thousand kronor for it. It’s for you who wants to be able to attach the product to a smooth surface and use it hands-free, because the suction foot is one of the stronger ones in the range according to both the manufacturer and the stores. It’s for you who’s used to anal toys and wants a properly filled-in feel—4.5 centimeters in diameter is a deliberate size, not a beginner size. And it’s for you who prefers replaceable batteries over a built-in battery that one day can’t be replaced.

It doesn’t fit you if you want silicone. TPE works, but the manufacturer itself states that plasticizers migrate out of the material over time, and that the surface then becomes oily—this sets a practical service life for the product as a hygiene item. It doesn’t fit you if you want to be able to rinse the product off under running water or take it with you into the shower; the manufacturer expressly prohibits submersion. It doesn’t fit you if you want to avoid a cord, or if you want to be able to hand control over to a partner at a distance. It doesn’t fit you if you’re a beginner with anal play—the manufacturer’s own customer information says that you should start with a smaller diameter and increase gradually.

And it doesn’t fit you if you want to know exactly what you’re buying in detail before you pay. There’s no run time, sound level, insertion length, IP rating, or breakdown of materials. None of the five shops fill in the gaps. For a product that costs 421 SEK, it’s a reasonable trade-off; at 695 SEK, it’s harder to defend, especially when a rechargeable silicone product with a published weight and model number costs exactly the same.

Warranty, complaints, and right of withdrawal

ORION does not publish any manufacturer warranty for Anal Pusher, either on the wholesaler side, on the consumer side, or in the article’s customer information. What exists in the manufacturer’s documents is a liability disclaimer: no responsibility is taken for damage or accidents caused by improper handling, force, modifications, or failure to follow the safety instructions.

There is, however, a shop commitment worth noting. Lekosmek lists a two-year product warranty on its product page. It applies against Lekosmek and not against ORION, so it isn’t transferable if you buy from any of the other four shops. The other four shops publish no warranty information on the product page.

What always applies is your statutory rights, and for this product they’re more valuable than any voluntary warranty. Under konsumentköplagen (the Swedish Sale of Goods Act), you have three years to complain for defects in the goods, regardless of what the manufacturer or the shop promises. In the case of distance selling, you also have a right of withdrawal for fourteen days under lagen om distansavtal och avtal utanför affärslokaler. Be aware that in practice, the right of withdrawal is limited for hygiene products that have been removed from a sealed package—however, the right to complain for defects always applies. If you have questions about what applies in your case, Konsumentverket (the Swedish Consumer Agency) guides you via Hallå konsument.

One last practical thing that belongs under this heading: since the product is powered by loose alkaline batteries, leaking cells are the most common reason it stops working, and battery damage is not a manufacturing defect. The manufacturer’s own instruction to remove the batteries after each use is therefore the cheapest guarantee there is—it costs nothing and protects against exactly the kind of fault that none of the replacements cover.