Battery Replacement

[Old_Geezer]

Ok, I know it's a long shot but...

I have a device, never really used, which now seems not to work. I've split it's case apart and checked it out, and reckon the battery has gone duff while it lay in it's box on the shelf.

I'm willing to try to replace the battery but a search brought up very little from the Internet. I suspect it's no longer made; in which case I'd need an equivalent small enough to fit in the same space.

It's a "AE451834P" Thomson lithium ion rechargeable battery, 3.7v.

I don't suppose someone here knows about batteries and what today's equivalent would be; is there ?

Thanks for reading.

[bhg481]

Many of these batteries are effectively AA cells stuck together - 3 cells would be 3.6V and should work OK. If you have any AA cells knocking around try measuring 3 stuck together and, if the size looks like it will fit your device, give it a go.

[Etch]

Rechargeable 3.7V Lithium-ion batteries seem to be readily available - does it look like any of these?:
https://www.amazon.com/3-7v-lithium-ion-battery/s?k=3.7v+lithium+ion+battery

[bookbinder]

Try Googling 3.7v li-ion battery.

[William51]

There is a range of rechargeable batteries on Amazon. If they have not got Thomson another make of the same size would work.

[Etch]

If this the right battery
https://obrazki.elektroda.pl/3498484500_1303928262.jpg
it is rated at 230mA/H, so depending on the dimensions there should be an equivalent, or higher rated, one available from Amazon (or elsewhere)

[Old_Geezer]

Pretty much Etch. It's the photo I got the details from as my battery is still in situ and shows no label on the visible side.

[Stickybottle]

When having difficulty in sourcing quirky type batteries I have often found alibaba.com to be useful

[Khandro]

Old_Geezer! where ya been man? I feared you'd gone down with the plague, glad to see you back :0)

[Old_Geezer]

Thanks all, I assumed there must be an equivalent but was hoping someone may have a table or something that indicated the right choice. Problem is that space is tight so it doesn't have to just be electrically equivalent but, to the best of my ability with a tape measure, 28mm × 17mm × 4mm. That's a lot of surfing & checking without a steer in the right direction.

[Old_Geezer]

Oh I look in occasionally Khan, but broke the compulsion. Trouble is it was just replaced with another for a pointless but addictive game started to pass time during the Covid panic period.

[Khandro]

Does it look like this,
Amazon.com User Recommendation

[Tuvok]

Why not try a mobile phone repair shop - take the device with you.

[Etch]

The specs for the full range of EEMB Li-ion polymer batteries is here:
https://www.eemb.com/battery/rechargeable-battery/li-polymer-battery.html
But I can't see any that are an exact match to your dimensions. This one is fairly close (1.75 x 3.2 x 0.43 cm):
Amazon.com User Recommendation?th=1

[Old_Geezer]

Physically too large Khan & Etch.

I'll keep looking though, thanks.

[barry1010]

What is the device?

[Old_Geezer]

Warfedale MP3 player.

[Tuvok]

What model number?

[Old_Geezer]

It's unclear; but it says FM6687 on the box, which I have to assume is the model.