Rechargeable device LCD PLUG+ VARTA 4XAA 2100mAh, AA, AAA and 9V.

57687 LCD PLUG+ Charger 4XAA 2600mAh BL1 from manufacturer VARTA

The charger allows you to charge 1 to 4 AA or AAA batteries (charges 4 x AA batteries in just 4 hours)
It also charges 1x 9V battery and USB devices
Thanks to the improved LCD screen showing V, mA and min, it is easier to operate
It can detect bad (unsuitable or damaged) battery cells
Safety features include minus Delta V voltage control method, timer, incorrect polarity, and short-circuit protection
Temperature control and maintenance mode are also present
It requires global voltage, so it can be used worldwide
The package contains 4x AA Recharge Accu Power (2100 mAh)