Powerful, fast-charging USB charger for 18650 lithium ion batteries.
Works with 10440, 14500, 16340, 16650, 14650, 18350, 18500, 18650, 21710, 26650 batteries.
Input voltage: DC 5V -1-2A
Output voltage: DC 4.2V 1000mA
Built in reverse polarity protection
