The batteries are Lithium Ion (Li-ion) equipped with a critical discharge protection mechanism and have the following characteristics:
·Lithium Battery 7.4V 6000mAh.
· They are kept charged for years,
· You don't have to wait for them to be completely empty to recharge them
· If you store them charged, you extend their life.
· Although they are capable of withstanding 1000 recharge cycles after 200-300 charges, their capacity decreases gradually (they are still functional but with less operating time).
Connect the charger to a suitable outlet and then connect the battery plug to the charger plug.