georget Float mode is automatic after battery is fully charged. The charger is monitoring the battery when it says OFF. If voltage drops, the charger will turn on and charge the battery.

georget The tester should work better after you remove it from the bag.

georget If you are concerned with the higher voltage in Winter, put the charger in AMG/GEL mode. That will keep the voltage at a lower level.

georget Did you select US plug option when you ordered it? I think the default is UK. It will be listed in your cart before you purchase and on your invoice after you purchase.

georget For your dead truck battery, how long did it take on the Pulse Repair mode before the charger finished and turned OFF?