Review on DOTTMON LCD Smart Universal Battery Charger 4 Bay for AA AAA NiMH NiCD SC C D, Li-ion 18650 26650 21700 26500 22650 18490 17670 17500 17355: Efficient Charging for Multiple Rechargeable Battery Types by Doris Allen

The product has a nice display and works as expected, but has some disadvantages that other similar products in the same price range do not have. First, the input power is hardwired to the device. If the wire gets damaged, be prepared to take everything apart and possibly solder a new wire. Second, no wall adapter is included. I didn't have a spare 2 amp adapter lying around and a new one costs $5-10. Finally, this device cannot detect the actual capacity of the batteries. It can only tell you how much current was used to charge the battery. Because defective batteries require more current to fully charge than healthy batteries, this charger reports defective batteries as high capacity. I found another unit in the same price range that comes with a 3 amp wall adapter and offers a discharge. Capacity test (full charge, discharge and capacity calculation and then recharge the battery)