#1 cool #2 warm
Conditions. Solar charger
. Output of solar panels
unknown. EST size 18x36in. 20 yrs +old. Flexcharger regulator
, 20+yrs old. All have been working ok. Batt for house loan only. No starting lode.
Voltage at solar charger
“out to date 12.8v
Voltage at batt 1+2 14.9v at ea batt.
Batt #1 cool to the touch.
Batt #2 warm to the touch
in both batt ok
Presume that batt#2 is faulty and should be replaced.