The batteries are rechargeable Ni-MH batteries with nominal voltage of 1.2V and rating capacity 1300 mAh
Perfect for use with the Bee-Bot or Pro-Bot

Each pack includes 4 batteries.

The charger can charge up to 4 AA or AAA batteries at once, with easy to read LED charge indicators.
Red LED on: Charging
Green LED on: Fully Charged and on trickle charging
With time control protections(10 hours)

0 Voltage Jump Start
Many chargers cannot charge batteries that have reached a 0 voltage condition. Using new technology, this charger can charge up these dead batteries and bring them back to life!
(excludes damaged or defective batteries)