Lithium-ion polymer (also known as 'lipo' or 'lipoly') batteries are thin, light, and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of ~100mAh for a total of about 0.4 Wh. If you need a larger battery, we have a full range of bigger cellsThe batteries come pre-attached with a high quality 2-pin JST-PH connector as shown and include the necessary protection circuitry. The included protection circuitry keeps the battery voltage from going...