Charge your Powerone ACCU Plus rechargeable hearing aid batteries on the go with the Powerone pocket charger. This charger is small enough to toss in your pocket for quick and easy access throughout your busy day. Charge 13 accu, 10 accu, and 312 accu batteries in their appropriate battery compartment insert. Powered by a rechargeable lithium polymer battery, this hearing aid charger doesn’t tie you down to an electrical outlet. Charge empty batteries in as little as 2.5 hours and up to 18 times before it’s time to plug in your charger’s USB power cord for a recharge. When plugged into an outlet, separate indicator lights will alert you when the charger battery and each hearing aid battery is fully charged. This “smart charger” will detect each battery’s charge to top off batteries that are nearly fully charged and discharge batteries running low before recharging—prolonging the battery's’ service life and saving you money.