18650 USB Rechargeable Lithium-Ion Batteries, 3.7 V
Button-top lithium-ion battery with built in Micro-USB charge port|Charges in 5 hours|Integrated safety circuit protects battery from overcharge/overdischarge|
Button-top lithium-ion battery with built in Micro-USB charge port
Charges in 5 hours
Integrated safety circuit protects battery from overcharge/overdischarge