Lithium Ion Battery Cell 21700
Capacity - 4000 mah minimum
Diameter - 21 mm
Length - 70 mm
Weight - 55 grams
Voltage - 4.20 Volts fully charged
Has New Safety Layer Technology
Passed U.L. #1642 Testing for Safety (UR rating)
Current - 10 amps maximum
Features:Protection from current and voltage over-discharge
Short circuit protection
PTC protection (prevents overheating)
Very low discharge rate
Charger for #18650 Battery Cell