Replace Battery in Waterproof Key?
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    1. #1
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      Replace Battery in Waterproof Key?

      I've been using the waterproof key for the past 2.5 years. I love how small it is. Unfortunately it's starting to fail - I think the battery is getting low. Is there a way to replace the battery?

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    3. #2
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      Quote Originally Posted by 8-track View Post
      I've been using the waterproof key for the past 2.5 years. I love how small it is. Unfortunately it's starting to fail - I think the battery is getting low. Is there a way to replace the battery?
      Cannot be changed
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    4. #3
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      If you gotta throw it away, you can try open it, should be doable with dremel tool. If it is a battery soldered in, you can still replace it, and glue the cover back, or find a different plastic case that is not waterproof but easier to open/close. We are all curious how it is built.
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    6. #4
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      Quote Originally Posted by FusionRedXC60 View Post
      We are all curious how it is built.
      Can always start with the FCC-ID lookup tool:
      YGOHUF8432
      https://apps.fcc.gov/oetcf/eas/repor..._id=YGOHUF8432
      Or if that doesn't work:
      https://fccid.io/YGOHUF8432
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    7. #5
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      Quote Originally Posted by mjpc View Post
      Can always start with the FCC-ID lookup tool:
      YGOHUF8432
      https://apps.fcc.gov/oetcf/eas/repor..._id=YGOHUF8432
      Or if that doesn't work:
      https://fccid.io/YGOHUF8432
      Nice, thanks for digging it out.

      Battery (CR2032/F1N, coin cell with battery contacts)
      Sounds a standard one
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    8. #6
      Junior Member Purpleorchid's Avatar
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      CR2032? That sounds too wide for the sport key.
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    9. #7
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      Here is what inside looks like..


    10. #8
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      Quote Originally Posted by jayliu View Post
      Here is what inside looks like.
      Thanks for this. Battery leads appear to be soldered to board and battery. So battery could possibly be replaced but significant care and effort would be required to retain key in good shape with water tightness? Perhaps water tightness is not important to some. Also, wondering if someone could just 3D print a new case.
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    11. #9
      Member Seti's Avatar
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      Quote Originally Posted by jayliu View Post
      Here is what inside looks like..

      Thanks. Surely the battery can be replaced and you can glue it back again albeit non waterproofed this time around to enable future battery replacement.

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    12. #10
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      Quote Originally Posted by Seti View Post
      Thanks. Surely the battery can be replaced and you can glue it back again albeit non waterproofed this time around to enable future battery replacement.

      Sent from my SM-G950F using Tapatalk
      The battery comes with soldered tabs.
      When the battery goes dead - open it comes.
      Unless you get thrown in a pool why would it get wet if it's inside your pocket?
      Torrential downpour? dog pissed on your pocket while your sleeping? Over active sweat glands? I'm sure there are others.

    13. #11
      Member phillipu's Avatar
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      Quote Originally Posted by GRUENDIG View Post
      The battery comes with soldered tabs.
      When the battery goes dead - open it comes.
      Unless you get thrown in a pool why would it get wet if it's inside your pocket?
      Torrential downpour? dog pissed on your pocket while your sleeping? Over active sweat glands? I'm sure there are others.
      As it is the "sport" key and is designed to be waterproof, I believe the intention is, indeed, to allow the owner to go swimming without leaving the key on the beach or on the pool deck. Excessive sweat and water poured over your head is also a real use case if you're an avid runner, bicyclist, etc. I think it's great that they thought of this and included it as standard. I just wish the battery was user replaceable which is certainly possible to engineer.
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    14. #12
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      Quote Originally Posted by Seti View Post
      Thanks. Surely the battery can be replaced and you can glue it back again albeit non waterproofed this time around to enable future battery replacement.
      Waterproofing shouldn't be too difficult once opened. Various epoxy, plastic-weld, and plastic-coats can make it waterproof.

      The opening of the case seems quite more difficult (and, doesn't appear to be something that will be a clean cut) based on the picture that was posted.

      In the end, it might be more plausible to get a small plastic shell, and place the board into it. Hell, even building a small LEGO one would work. Just epoxy it up, and done.

      If someone is a little more up to it, at that point, it could be easily designed with a user-replaceable battery, and still maintain proper IP rating, like a wrist-watch.
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    15. #13
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      Quote Originally Posted by phillipu View Post
      Quote Originally Posted by GRUENDIG View Post
      The battery comes with soldered tabs.
      When the battery goes dead - open it comes.
      Unless you get thrown in a pool why would it get wet if it's inside your pocket?
      Torrential downpour? dog pissed on your pocket while your sleeping? Over active sweat glands? I'm sure there are others. <img src="http://www.vwvortex.com/Anthony/Smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />
      As it is the "sport" key and is designed to be waterproof, I believe the intention is, indeed, to allow the owner to go swimming without leaving the key on the beach or on the pool deck. Excessive sweat and water poured over your head is also a real use case if you're an avid runner, bicyclist, etc. I think it's great that they thought of this and included it as standard. I just wish the battery was user replaceable which is certainly possible to engineer.
      No, it shouldn't be difficult. Think of all the heart rate monitors that have batteries. A small screw top with a gasket over the battery would be easy to engineer from the start. Even if it cost an extra 5 dollars to produce, can't they roll that cost into a 50 to 80k dollar car. The cheap and easy solution for when you need it to be waterproof is a ziploc bag, but who wants that.

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      Quote Originally Posted by VTbuckeye View Post
      No, it shouldn't be difficult. Think of all the heart rate monitors that have batteries. A small screw top with a gasket over the battery would be easy to engineer from the start. Even if it cost an extra 5 dollars to produce, can't they roll that cost into a 50 to 80k dollar car. The cheap and easy solution for when you need it to be waterproof is a ziploc bag, but who wants that.
      I don't mind lose waterproof after replacing battery. It has to be closed and sealed reliably, and tested if need to be watertight.

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    17. #15
      so the intended solution is to get a new sports key and get it reprogrammed. how much would THAT cost, my god. (rhetorical question, last I checked a "real" key, including programming/cutting, was well over $500, therefore I went with a Russian gent + OTA VIDA). seriously, who's the doofus engineer that came up w/ this "solution"?

    18. #16
      Junior Member Purpleorchid's Avatar
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      I stand corrected. The fob is basically the width of a 2032...no side wiggle room at all.

      Thanks for the picture.

      If I had the guts to open up my sports fob, I'd seal it shut using sugru to regain waterproofness. Then when it comes time to replace the battery again, just remove the sugru and redo the sugru seal again.
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    19. #17
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      Quote Originally Posted by tonyc View Post
      so the intended solution is to get a new sports key and get it reprogrammed. how much would THAT cost, my god. (rhetorical question, last I checked a "real" key, including programming/cutting, was well over $500, therefore I went with a Russian gent + OTA VIDA). seriously, who's the doofus engineer that came up w/ this "solution"?
      maybe is wasn't an engineer, maybe it was an accountant.

    20. #18
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      Quote Originally Posted by GRUENDIG View Post
      maybe is wasn't an engineer, maybe it was an accountant.
      I mean, I don't think you're necessarily wrong about that. Seems like the most plausible, although cynical, reason.
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    21. #19
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      Quote Originally Posted by phillipu View Post
      I mean, I don't think you're necessarily wrong about that. Seems like the most plausible, although cynical, reason.
      I like that.
      Everything is done for a reason. And I don't look for the dark side of everyone or everything. I try to keep my eyes and mind open.

    22. #20
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      Quote Originally Posted by jayliu View Post
      Here is what inside looks like..

      Wow surprised how simple it is inside the key. Batt looks super easy to change, just have to figure out a clean way to open them.

      My batt is dying also, so will be opening mine up.

    23. #21
      Quote Originally Posted by FusionRedXC60 View Post
      If you gotta throw it away, you can try open it, should be doable with dremel tool. If it is a battery soldered in, you can still replace it, and glue the cover back, or find a different plastic case that is not waterproof but easier to open/close. We are all curious how it is built.
      Or, you could get it replaced under warranty. While we're still curious to see what's inside, there's no sense in eating the cost on it. I would be surprised if it's battery after only 2.5yrs though. It's something that should be designed for at least 10. It's a passive device that shouldn't be drawing much power in the first place.
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    24. #22
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      Quote Originally Posted by tonyc View Post
      ... who's the doofus engineer that came up w/ this "solution"?
      Well, if you think about it from the following perspective:
      Volvo: Need a key
      HUF: We make TONS of stuff for all vehicle manufacturers, we can do that

      Volvo: Waterproof
      HUF: Easy, we can make a sealed unit

      Volvo: Really, really waterproof
      HUF: No problem. We can make it.

      Volvo: Okay, and as small as possible
      HUF: Okay, no problem.

      Volvo: And users can't accidentally damage the waterproofing by replacing the battery and then coming back to us saying it was bad from the beginning.
      HUF: Ah, yes.. Sealed unit. Here you go.

      When you think about it... if they had gone with a waterproof system, that was designed to withstand various scenarios that are shown in various ads for cars... The only real option for the smallest unit possible would be a sealed unit. If they went with something a user could unscrew, it would probably look a little "cheap" - especially when the screws would begin to strip from someone (like me) that would open it up for no reason to look and admire, or, want to try to do something cool with it. For the proper amount of pressure to maintain a waterproof rating, it would need to be screwed down in multiple locations, so, now, possible 3-4 screws. If they were tightened too much, it's possible the plastic would eventually start to strip.

      So, they designed it well.

      You should see what else HUF makes... I'm sure they would have made it a different way, under different design specifications from Volvo, but, what we see is pretty efficient in terms of a waterproof keyfob.

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    25. #23
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      I like the design, it's what I carry all the time. I swim and surf in the ocean, and need to be able to swim with it so I need extra sure waterproofing. If it lasts 3 or 4 years, I'll be happy, provided it doesn't cost too much to replace.

    26. #24
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      Quote Originally Posted by mjpc View Post
      Well, if you think about it from the following perspective:
      Volvo: Need a key
      HUF: We make TONS of stuff for all vehicle manufacturers, we can do that

      Volvo: Waterproof
      HUF: Easy, we can make a sealed unit

      Volvo: Really, really waterproof
      HUF: No problem. We can make it.

      Volvo: Okay, and as small as possible
      HUF: Okay, no problem.

      Volvo: And users can't accidentally damage the waterproofing by replacing the battery and then coming back to us saying it was bad from the beginning.
      HUF: Ah, yes.. Sealed unit. Here you go.

      When you think about it... if they had gone with a waterproof system, that was designed to withstand various scenarios that are shown in various ads for cars... The only real option for the smallest unit possible would be a sealed unit. If they went with something a user could unscrew, it would probably look a little "cheap" - especially when the screws would begin to strip from someone (like me) that would open it up for no reason to look and admire, or, want to try to do something cool with it. For the proper amount of pressure to maintain a waterproof rating, it would need to be screwed down in multiple locations, so, now, possible 3-4 screws. If they were tightened too much, it's possible the plastic would eventually start to strip.

      So, they designed it well.

      You should see what else HUF makes... I'm sure they would have made it a different way, under different design specifications from Volvo, but, what we see is pretty efficient in terms of a waterproof keyfob.

      HUF: https://www.huf-group.com/
      They are the OEM/ODM for a number of systems in many vehicles, and even have some products that go on sale under other brands for aftermarket sales.
      It is well designed and serves the purpose for which it was intended. It is also disposable, which is how it was designed to be.
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    27. #25
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      I had mine replaced under warranty. Bought 17 CPO and the key fob never worked, local dealer (not the selling dealer) initially said I would have to buy a new one. But the literature says the sport key would last for seven years. I think I may have just gotten a sport key from another car, but who knows. I was going to open up the case and see what it looked like in side, but the dealer took back my bad sport key.

      Jonathan

    28. #26
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      I didn't see anything in the manual that called this key waterproof or a sport key. Where did you see this?

    29. #27
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      If you need to use the key fob in a wet environment, just place it in a small zip bag.
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    30. #28
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      Quote Originally Posted by JFK-USAF View Post
      I didn't see anything in the manual that called this key waterproof or a sport key. Where did you see this?
      It's kind of hidden in the electronic owners manual. Look for "buttonless key" or "key tag." If you tap one of the Blue information circles it states: "The key is waterproof up to a depth of approx. 10 meters (30 feet) for up to 60 minutes."
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    31. #29
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      Quote Originally Posted by JFK-USAF View Post
      I didn't see anything in the manual that called this key waterproof or a sport key. Where did you see this?
      Here: http://volvo.custhelp.com/app/answer...28sport-key%29
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    32. #30
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      Quote Originally Posted by 90MTX View Post
      I had mine replaced under warranty. Bought 17 CPO and the key fob never worked, local dealer (not the selling dealer) initially said I would have to buy a new one. But the literature says the sport key would last for seven years. I think I may have just gotten a sport key from another car, but who knows. I was going to open up the case and see what it looked like in side, but the dealer took back my bad sport key.

      Jonathan
      Yeah, I thought I have read somewhere 5 or 7 years.. In any case- more than a year

    33. #31
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      Quote Originally Posted by infinkc View Post
      Wow surprised how simple it is inside the key. Batt looks super easy to change, just have to figure out a clean way to open them.

      My batt is dying also, so will be opening mine up.
      Wow, cool! When my battery dies, I'm turning this into a completely different fob. I want something that I can lace into my shoes when I run without worrying about damage to the fob.

    34. #32
      Junior Member Purpleorchid's Avatar
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      Question for the solder-ers out there: How does one unsolder that battery? I assume those 4 dots on the battery tab are welds also?
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      Quote Originally Posted by Purpleorchid View Post
      Question for the solder-ers out there: How does one unsolder that battery? I assume those 4 dots on the battery tab are welds also?
      I'd solder off the tab from PCB, and replace it with standard battery holder brackets used in old fashion key fob.
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    36. #34
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      Quote Originally Posted by Purpleorchid View Post
      Question for the solder-ers out there: How does one unsolder that battery? I assume those 4 dots on the battery tab are welds also?
      Typically de-soldering braid or a solder sucker.
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    37. #35
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      Quote Originally Posted by Purpleorchid View Post
      Question for the solder-ers out there: How does one unsolder that battery? I assume those 4 dots on the battery tab are welds also?
      The battery they're using is actually sourced with the tabs on it so the only soldering needed if you go the same way is directly to the PCB. There are a number of alternative routes you could go including buying a more serviceable battery holder (https://www.mouser.com/_/?Keyword=battery+holder+cr2032) but then you'd have to add some wiring to connect to the original pads in addition to fashioning a new case that could fit the modification.
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