* Allow partial discharges and charges. Lithium-ion batteries do not have a charge memory like NiCad batteries. Several full discharges in a row put a strain on the battery that reduces its life.
* Fully discharge of lithium-ion battery after 30 charges or once a month. A condition called “digital memory” occurs when a battery has continuous partial discharges. By recharging the battery after it has reached the discharge “cut-off” point, the power gauge is recalibrated to show the correct discharge life on the fuel gauge in the electronic.
* Unplug the battery when it is fully charged. By leaving it plugged in once it is fully charged, the battery health degrades because the charger may continues to try to charge the battery even when it is at 100%. Read the battery manual to be sure the charger stops charging after the battery is full if you want to keep it on the charger overnight.