Hehe, not more batteries to change So I guess you won't know if these need changing until you remove the main car battery and the backup battery doesn't take over
FM
dont worry about em , just change the battery when required 2 min job !!
just remember to have windows wound down when you disconnect
Good recommendation,,, but I think you'll still be ok if you don't
no you must have windows down , because if you dont , and disconnect battery with doors shut then try and open them with battery disconnected it will possibly damage door seals/ window glass