HELP! No start no electics!

[Deleted account 200502001]

Having left the battery on charge overnight the bike started fine this morning.

 

[Bendy toy]

An over-discharged lead acid can have a cell go reverse polarity. With a normal charger that's it. AN Optimate will automatically belt it with a double voltage charge and with luck the dodgy cell will flip the right way. The battery wont have it original capacity but should work.