Due to the coronavirus pandemic, my diesel truck was parked most of the time and both of its batteries were slowly draining. Ideal for charging, the Clore charger will automatically go from 'charging' to fast charging to absorption (important for an AGM battery) to completion and then to rest, movement and battery recovery. The charge indicator shows the charge status as a percentage when driving past. When connecting two batteries in parallel, I disconnected the leads from each battery and…