Disconnect the breather tube (2).
Disconnect the BLACK negative (A) first and then the RED positive terminal (B). ALWAYS DISCONNECT THE BATTERY CABLES IN THIS ORDER.
Remove the battery from the support.
Warning! Batteries produce explosive gases. Store batteries in well ventilated conditions away from sources of heat or naked flames. Always wear safety goggles and gloves when handling batteries.
At reassembly, spread a film of protective grease for electrical contacts on the battery terminals. Tighten the battery clamps securely.