MaineFusion Report post Posted September 7, 2013 I found two extremely informative forum threads about the FFH battery and keeping it charged. The first is on the Ford Fusion Energi forums and the second is on the Ford C-Max Energi Forums. The second thread is especially informative with a link to Amazon with a recommended battery charger. I'm thinking the advice on these threads will not only extend the life of the 12v battery, but maybe help some folks who keep having issues with this battery. http://www.fordfusionenergiforum.com/topic/1190-bxt-99r-390-battery-discharge-plot/http://fordcmaxenergiforum.com/topic/1645-12-volt-battery-soc/ 3 milleron, B25Nut and GrySql reacted to this Quote Share this post Link to post Share on other sites