The PixelWhips Rev2-4 use a 18650 Li-ion battery, 2400 mAh that comes with a charger.  


We no longer offer batteries or chargers and separate accessories due to stock issues since early 2020.


If you just need to buy an extra battery and/or charger, you could simply order one from Amazon, or the Battery Store. You’ll need an "18650 Lithium-Ion, PROTECTED CIRCUIT" :


https://www.18650batterystore.com/

https://www.amazon.com/EBL-Universal-Battery-Rechargeable-Batteries/dp/B07PRJRHHB/ref=sr_1_3?dchild=1&keywords=18650+battery+charger&qid=1616013852&sr=8-3

https://www.amazon.com/Nitecore-i2-Intellicharge-Charger-Battery/dp/B0096U26QQ