... LR06 AA 1, 5V, 6LR61, and 9V rechargeable battery Use: Standard Battery The yk999 has an easy to use, sliding spring ... Full CE approval with the following protection schemes:* Alkaline battery protection, faulty battery protection, overcharge protection, short circuitprotection, wrong polarity protection ... voltageprotection, timer protection and high temperature protection. Alkaline battery Charger