-Input: DC 5V 2.1A
-Three stage charging to maximize battery lifespan
-Precisely cuts off at 4.2V when the battery is fully charged
-Current buffering technology keeps batteries from violent currents.
-Reverse-polarity/ short circuit/ overcharge/ overheat protection
- LCD screen
10440,14500, 14650, 16340(RCR123),17335, 17500,17670,18350,18490,18500,18650, 18700, 20700, 21700, 22650, 22500, 26650,