"CHG" indicates charging. Every Slot has its own cycle, you will never worry about having to find two Low-power batteries for charging. AAA 800-1100mAh: 0.8-1.2 hours. AA 2300-2800mAh: 2.5-3 hours. 1 x USB Port.

Input: DC 5V/2A (MAX)
Output: DC 1.2V (NO-LOAD)
Model: AA, AAA, C, D Battery charger
Brand: EBL
Type: Charge Only
Compatible Battery Sizes: AA, AAA, C, D
Chemical Composition: NiMH
Manufacturer Warranty: 1 Year