Lithium Ion Battery Charging
Lithium Ion or commonly know as Li-ion batteries are very different to Lead acid batteries.
They need specific battery chargers and it is best to get the charger as originally supplied as there are subtle differences to different makes of Li-ion batteries and they need their own chargers.
Particularly, the end voltage of the charger is critical to long battery life.
If you are interested in the details of Li-ion battery charging, rather than us making up pages with all the information, the best website we have come across is this one – go read and learn ;