Chosen Solution
I disassembled one earbud to the point where I can identify the battery as “M1254S2 3.7V 0.222Wh” several internet searches later, I have come up empty. Any ideas would be appreciated. Thanks
Hi @feltonjohn I think that an M1254S2 battery is equivalent to a 1254 coin cell battery. The “1254” in the specifications = 12mm diameter x 5.4mm height. Don’t know the earbuds so it may depend on whether the type you need is the soldered in type i.e. has solder tabs or is simply inserted into a battery holder of some sort. 0.222Wh is the amount of power produced by 60mAH @ 3.7V. So maybe searching for a 1254 3.7V 60mAH coin cell rechargeable battery (examples only) will get results for what you need.
