3.7V 3000mAh 105151 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with PH2.0mm JST Connector

This was a random purchase but it ended up working! My mom had an old electronic magnifier that used this model battery and she was sad when it stopped holding a charge. I opened it up, ordered this battery, and one spicy pillow swapped out later, it must have been a perfect match for voltage, capacity, and type because her device works again and holds a nice long charge.

I used the battery to replace a defective one in a rechargeable headlamp. The headlamp didn't have a connector, but it was easy to remove the old battery and solder in the new one. The new battery was a little bit thicker than the original, but it still fit in, although a bit tight. The battery had a partial charge when delivered, and charged fully within a hour.

Works great. We’ve used it several times. Small and compact. Exactly as described.

Used it to replace battery in heated eye mask that failed in less than six months. Seems OK after a few weeks.

Decent battery for my Internet radio. Battery is small and compact. Connector (jst) fit precisely. Came charged already. Will buy again if this one wears out. The original battery lasted over two years.

This battery does not hold a charge very well. I am regretting this purchase.

Not holding a charge for long, but It has worked for my project.

The battery works well and provides the expected 3.7 Volts output, but you definitely need a BMS (battery management system) to safely charge and recharge it. Once set up properly, it’s a solid LiPo pack for electronics projects and good value for the money.

Me sirvió a ir perfección para reparar mis audífonos

Works perfect as the replacement battery. Packaged very well.

I ended up having to replace the battery inside of my Dash cam. Since it's a fairly expensive dash cam I decided to go this route as my old battery swelled. And it would no longer hold time or settings in the dash cam itself. I couldn't find the original 240mah battery. Took a chance as this is about 2 mm larger in every dimension then the original. But it fits perfectly in the case and the dash cam stays on for longer when the vehicle is turned off. which is great. Would recommend the battery seems to work good.

Remplace une batterie pour un laser

My small Bluetooth cube speaker battery had long given up the ghost so a full charge only lasted about 15 minutes. The old battery was rated at 450mAH and this one is supposed to be 500mAH in the same package size but I have no idea if that's real or just inflated specs. In any case the speaker is back to holding a charge for several hours and I'm happy. I thought I was going to have to transfer over the old BMS (battery management system) PCB but this new one came with one already attached.