I must be one of the few who read the operators manual for my vehicles. Probably from flying where pilots were taught to read the manual for any plane you were going to fly. It surprising what may or may not be in the manual. I was not informed the ATAS had a lithium batter before I bought it. As others mentioned bump starting a DCT is not an option. Considering the height of any Africa Twin bump starting is not an option for the solo rider. If you have someone willing to try push it, great. I lucked in a few years ago when replacing my failed battery charger. I purchased a NOCO Genius G3500 3.5A unit. It has functions for lead acid, AGM and Lithium. It also has a water resistant (possibly water proof) case, incorrect polarity protection, is light and reasonably compact. NOCO makes larger and smaller chargers as well. Other manufacturers must make suitable chargers at reasonable costs. Considering the cost of the OEM battery a new charger may be a good investment for the home shop.