JESSPOW 10440 Rechargeable Battery, 10440 Li-ion Rechargeable Batteries 3.7V 350mAh for LED Flashlight Torch, 4 Pack

Like these batteries alot so far. Seem like quite a solid option for rechargeable 10440.

I like these 10440 batteries, already have a charger that will charge them. It charges them to full rated capacity. I like the build quality. Since this is my first purchase I can't speak to longevity time will tell.

I haven't tested them for capacity yet but I did notice a big difference in a single cell flashlight rated for alkaline, NIMH and lithium 10440 cells. Very happy with their performance and price.

Batteries work well and seem to last a decent amount of time before needing to be recharged. A word of caution. Make sure that your charger has a small bump for the negative end of the battery. The wrap extends over the edge and covers part of the bottom of the battery. My I4 charger works but I have to insert the batteries very carefully.

Great product

Bought these for a Fiio Snowsky Retro Nano Bluetooth DAC/Amp. I like these batteries allow me to reload the nano and remove the need to charge to get more use out of it. 10/10 would recommend to anyone who owns a retro nano or plans on getting one. Each battery lasts about 5-6 hours for me with LDAC.

works great

So far,so good. Using them in a stream light, micro flashlight really kicks up the lumes! Been using them for an increase in light intensity. Big boost over 1.5v aaa battery