OptiMate 4 BMW CANbus 12V Motorcycle Automatic Battery Charger Optimiser

Perfect! Bought gor my motorbike

Comes with direct connections if you want to go straight to the battery terminals. However I have canbus and it’s so easy after a ride to just plug it in the socket and leave it knowing it’s keeping my battery in tip top condition.

Setup instructions a little confusing but once set up seems to be keeping the battery on my canbus fitted BMW R9T in good condition.

Works really well. I am impressed that I have bought the battery lead for all of my bikes so that i can plug it in easily. Diagnoses the battery aswell so if it does not register a grean light after the charging has taken place then the battery is on its way out so it can be replaced before leaving you stranded in the wilderness. Has a standard and canbus charging capability but I hav not used the latter. clear and easy to follow instructions.

I connected it to the hella connector and observed the lights. Although the instructions show loads of different meanings for the various lights, it didn't show the expected sequence of combinations of lights during a normal charge. The lights I saw during the initial sequence was not what Inwas expecting based on the instructions, and I thought that either the bike, the battery or the charger was faulty. As it completed the charge sequence it became clear that it was okay. But it would be very easy to include a 'this is what you will see when you first connect, this is what you will see when it has made its first test sequence after 30 minutes, this is what you will see when it has completed the charging and testing and is in maintenance mode'.

Vehicle has a battery hidden away so awkward to fit my old Optimate. As is a can bus vehicle this Optimate had the option of plugging it into the accessory socket. It arrived with the can bus option already selected so just had to select the correct connector plug it into the vehicle and the mains. It performed an initial battery check cycle and then all indicators went green. It now monitors the battery and keeps it in tip top condition so the vehicle is ready to use at the turn of the key. Peace of mind knowing that when I want to use the vehicle it is ready to go and no flat battery.

As it is a can bus edition, it can’t already set up in can bus mode.Instructions are tricky but once I understood it was so easy to use.Basically plug the can bus extension into the lead from the Optimate, plug that into the bike’s can bus port. Make sure both connections are firmly in place(mine weren’t, I had pressed hard but not enough) then plug the optimate in and it does everything else.Lights on the optimate are only there to tell you what’s going on, by referring to to the light codes in the instructions.Took me longer to write this than to get it working :)

Good product made more useful with feedback on what constitutes a week charged battery from the BMW R9T forums.