EEMB 4PACK LIR1254 Rechargeable Battery 3.7V Lithium-ion Button Batteries Coin Cell Battery for WF1000XM3 WF-SP900 Headphones Wearable Device Watch

The EEMB 4PACK LIR1254 Rechargeable Batteries are excellent! I used them to replace the batteries in my Bluetooth earphones, and they worked perfectly. The 3.7V lithium-ion cells hold a strong charge and have significantly extended the battery life of my device. They're also easy to install and a great value with four in the pack. Perfect for headphones, wearables, or other small devices. Highly recommend if you're looking for reliable replacement batteries!

Worked like a charm. Super easy to replace these in my WF-1000XM3 earbuds. Just needed a little screw driver and a strong fingernail to pry the case off then unscrew two little screws. There's some glue in there just be careful when you peel the top board off. There are easy to follow youtube videos out there.

1 out of 4 batteries is 50% less capacity than other.

Works good so far

Do not buy these batteries they arrived to me faulty. The new installed battery does not charge past 5% based on indicator, but lasts longer than a 5% charge should. When I opened the battery back up, it was hot to the touch overheating. Red flag. Make sure you buy product approved batteries for your device in question. I learned my lesson.

Actually I am surprised, but so far they work at advertised capacity!Before I bought these, I bought "Varta" and they were fake!My headphones worked for 1 hours max. With these they work for over 3 hours, so I am pretty happy!

They work fine so far. Be careful about which side is "up". I replaced a dead Varta brand battery in an earbud and these have the text on the opposite side as the previous battery. Putting it in upside down is dangerous, it will get very hot.

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