Just cleaned all the battery terminals and put those felt pads since Amazon put a pack in my last delivery and didn't want them back.
Bought a cheap $20 12v battery tester and trying to determine if it or the BatteryTender is off: car that has been in garage for about a year on the BatteryTender shows a 90% SOC and the battery tester says the battery is "Good - Recharge".
Trying to figure out if the battery is fine and BatteryTender only charges to 90% or if battery tester just says "recharge" if battery isn't 100%
Battery tester or multimeter/voltmeter? Harbor freight multimeter (7$) is better than one of those cheap 12 volt battery testers that show nothing really useful. It might say "good, recharge" at 12.6 volts - which is fine.