The Rechargeable battery option comes with two battery packs (one for lighting whilst the other is charging) and a charging unit. 20 hours of use, recharge time 1.5 hours.
High 4200mAh Capacity Nickel Metal Hydride.
All Cells are matched.
No cell memory, you can recharge the pack without fully discharging!
Dimensions : 22.5cm x 5cm x 2.5cm (9" x 2" x 1")