Lithium Ion Battery - 400mAh

This is a very small extremely lightweight battery based on Lithium Ion chemistry with the highest energy density currently in production. Each cell outputs a nominal 3.7V at 400mAh! Comes terminated with a standard 2-pin JST-PH connector with 2mm spacing between pins. These batteries require special charging; do not attempt to charge these with anything but a specialized Lithium Polymer charger.The battery includes built-in protection against over voltage over current and minimum voltage. Please use caution when using this battery in wearable projects. When using conductive thread a short in the thread can create sparks and heat. We recommend using coin cell batteries.Note: This battery is not available to ship to Alaska or Hawaii or through any express services (2-day overnight) or internationally. This is temporary! Check out our blog post for more information. Additionally orders may take longer to process and therefore do not qualify for same-day shipping. Sorry for any inconvenience this may cause!Note: This item is non-returnable. If this item arrives damaged or is not functioning properly please do not hesitate to contact us to see if further actions may be taken.