Twharf is a magnetic charger for aa batteries which makes your batteries last even longer. This lithium device can recharge your batteries via magnetic absorption charging cable or by standard 5V charger. It fully charges the batteries within 1.5-3 hours with an additional 2 year standby time.
These batteries can be charged more than a thousand times reducing a handful amount of waste making it somewhat environmental friendly. It has a built-in safety circuit that prevents overcharging the batteries.