OptiMate 4 CAN-bus edition, the most advanced 12V battery saving charger for your high performance or touring BMW motorcycle - Most popular BMW motorcycle charger world-wide! Includes the OptiMate adapter/ extender (O-09) that connects directly to the 12V DIN socket on BMW motorcycles. Automatic KEY-LESS activation and continued 24/7 safe long-term maintenance - Connect and forget no more. View and Download BMW 77 02 8 551 896 instruction manual online. BMW Motorcycle Charger. App store 4s. 77 02 8 551 896 battery charger pdf manual download. I have the same charger, used it many times and even when I wised up -after paying for my second bmw/exide gel piece of kaka, still works fine on new Odyssey AGM battery. There is no place in the manual that say you have to go thru the 'handshake' bs that the older model charger required on can-bus bikes. The proper way to charge a BMW battery is by using the jump start terminals under the hood. Open the driver door using the emergency key found inside the key fob. Pull the hood release twice and open the hood. Locate the positive terminal under the engine bay. Universal Fit Universal Fit parts can be installed on various motorcycles and may require modification. Duraboost Battery Maintainer 750 $ 24. TecMate OptiMate 4 Dual Program Battery Charger for BMW CANbus $ 90.