The i4 universal smart charger is compatible with almost all rechargeable Li-ion batteries on the market , with An integrated digital LED light that displays the charging status – red when charging and green when fully charged.
The charger Features micro USB input and Integrated power management system Intelligently detects power Input, Each of the four battery slots monitors and chargers independently.

Features:
Input: Micro USB DC 5V, 2A
Output:4.2v, 0.5A for each slot
Overtime and reverse polarity protection

Compatibility:
26650
22650
21700
20700
18650
18490
18350
17500
1634(RCR23)
14500
10440
17335

What's Included:
1 x BA4 Charger Body
1 x Charging Cable