Adafruit Lithium Ion Polymer Battery - 3.7v 150mAh

Key Features Light, thin, powerful battery Pre-attached genuine JST connector 150mAh capacity for 0.6Wh Included protection circuitry keeps the battery voltage from going too high (over-charging) or low (over-use) Lithium ion polymer batteries are thin, light and powerful. The output ranges from 4.2V when completely charged to 3.7V. This battery has a capacity of 150mAh for a total of about 0.6 Wh. If you need a larger battery, we have a full range of bigger cellsThe batteries come pre-attached with a genuine 2-pin JST-PH connector as shown and include the necessary protection circuitry. Because they have a genuine JST connector, not a knock-off, the cable won't snag or get stuck in a matching JST jack, they click in and out smoothly.The included protection circuitry keeps the battery voltage from going too high (over-charging) or low (over-use) which means that the battery will cut-out when completely dead at 3.0V. It will also protect against output shorts. However, even with this pr