Leaf Aptus-II Installation Manual - page 22
Charging the Batteries
15
Note: Do not leave the battery in the charger when the charger is not
connected to the power supply. This causes the battery to discharge.
To charge the battery with the car lead:
1. Connect one end of the car lead cable to the hähnel MCL103 battery
charger.
2. Connect the car lead to the 12V car socket.
To remove the battery pack from the charger:
Slide the battery off the charger.
Warning! Use only the supplied 12V DC power supply or 12V car lighter
adaptor.
Warning! Never apply excessive force when connecting or disconnecting a
battery.
Warning! Keep all contacts clean.
Warning! Do not force down any of the contacts.
Warning! Do not short circuit the contacts.
Warning! Never store the battery connected to the charger for an extensive
period of time.
Warning! Do not expose to excessive heat or naked flame.
Warning! Do not dismantle the product or alter it in any way.