Selecting the wrong mode will not properly charge your battery. The 2021 manual provides this specific guide:
| Protection | How it works | |---------------------|---------------| | | No output if clamps reversed; error code displayed. | | Short circuit | Shuts down output. | | Overheating | Thermal cutout with auto-reset. | | Overcharging | Float mode prevents. | | Spark-proof | Clamps only energize after correct connection and AC power on. | | Bad battery detection | If voltage doesn't rise properly, charger aborts and shows fault. | everstart 6811a smart charger manual 2021