50 قطعة 1200 مللي أمبير 3.7 فولت بوليمر ليثيوم Li-Po 103040

I needed a compact power source for a DIY project, and these 103040 cells fit perfectly in the small casing. The 1200mAh capacity gives my device decent runtime without adding bulk.

These little cells have been fantastic for a wearable project I'm prototyping. Even at 1200mAh, they're light enough to not weigh down the housing, and the 3.7V output has been steady through multiple charge cycles.

For a DIY portable Bluetooth speaker project, these 1200mAh cells pack just enough juice without adding bulk. The compact 103040 form factor made them a breeze to solder into the tight enclosure I’d designed.