applying testing tools to my (probably 18 year oldtor ) GEL batteries I am getting:
1) from a load tester... a reading I cannot decipher
2) from a more fancy battery tester, on various battery type settings, generally a REPLACE or POOR reading
but can I field test this battery?
for instance, at 230pm this afternoon it was reading 13.02V
I have since run the 12v 42W refrigerator for... 6 hours and the auxiliary battery voltage has dropped to 12.44v
so down 0.56v
so, based on that, can I calculate the health of my GEL batteries?
1) from a load tester... a reading I cannot decipher
2) from a more fancy battery tester, on various battery type settings, generally a REPLACE or POOR reading
but can I field test this battery?
for instance, at 230pm this afternoon it was reading 13.02V
I have since run the 12v 42W refrigerator for... 6 hours and the auxiliary battery voltage has dropped to 12.44v
so down 0.56v
so, based on that, can I calculate the health of my GEL batteries?