Imported 21700-3.7V5000mAh lithium battery,Branded 18650 and 21700 cells
3.2V Lifepo4 Prismatic Battery for DIY 12V 24V 48V Battery
Dlyfull Universal 10 Speed Battery Charger Fast Charger for NI-MH NI-Cd LiFePo4 18650 21700 AA AAA C D 9V Rechargeable Batteries : Amazon.com.be: Electronics