3.7V 40mAh 301020 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.

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.

I bought this battery for my son's walkie talkie. However, the connection did not fit. My husband had to cut the connection from the old battery and remove the connection from the new battery and place the old battery's connection onto it. It worked perfectly afterwards. It was the right size and it functions well. It keeps good charge.

Perfect fit for my wireless noise-cancelling headphone repair! Working reliably for six months and take a charge. I do not ever let my batteries go down to zero charge (to preserve their life) but I would say they easily last 6-7 hours (our last flight from the west to eastern seaboard.) Yes, some soldering was required because I didn't have a plug, but I made sure the size, amperage, and amp-hour was correct. Make sure the capacity numbers match up.

Arrived on time and as described. Seems to work well.

This battery has identical specs to the one that came with my small soap dispenser. However, the one a received doesn't hold a charge for more than a week of infrequent use. The brand that I replaced would hold a charge for three months. I would not purchase this product if you plan on recharging it.

I had some serious issues with the package arriving, but that wasn't their fault, it was Amazon's fault. The battery itself came in good shape, packaged well, and about a week late.

Polarity on the unit I got was opposite the one in the picture. They warn you to check the polarity and connector type before you buy, but they should warn you that the polarity is random and may vary from unit to unit.

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

لماذا حتى الان لم يتم ارجع السلعة هذا غير مقبول والتاخير يضر بي