Godrej GP Power Bank Rechargeable Battery Charger (Single unit) Safe charging and easy handling. The STANDARD range of GP PowerBanks offers an economical solution to charge in all batteries sizes. Whether you need to charge AAA, AA, C, D or 9V batteries, all GP PowerBanks are simple and convenient to use; just put in your batteries and leave it charging overnight. The automatic timer control guarantees a safe charging process after which you can take your charged batteries out when needed.