12 AGM Battery number 2. This is a different AGM battery I asked about earlier.
This is a 12v 900 cool cranking amp car battery. Convince the battery is the original battery from a 2008 car. Battery still seal never opened. Do not believe the battery was ever overcharged and was working well the two years we owned it during normal driving.
Then,... Car sat a while because of Covid will not start on it own need a boaster to start.
Will not charge fully when charged with floating charger. (it would be like charge with floater charger car would start, drive to story, and, will not then start without boaster).
So remove battery place on batter desulfater for about 2 weeks. Load test show 600 Cool Cranking Amps no self discharging (happy right).
Put in car start up right away. 2 weeks later still start but notice weak battery. Load test show 200 amps. But voltage steady at 12.4v So desulfate for another 2 weeks in car. Load test still show 200 amps.
So any idea what happen. It is not self discharging but how did it go from 200 Amps to 600 Amps and then Back to 200Amps.
thans
This is a 12v 900 cool cranking amp car battery. Convince the battery is the original battery from a 2008 car. Battery still seal never opened. Do not believe the battery was ever overcharged and was working well the two years we owned it during normal driving.
Then,... Car sat a while because of Covid will not start on it own need a boaster to start.
Will not charge fully when charged with floating charger. (it would be like charge with floater charger car would start, drive to story, and, will not then start without boaster).
So remove battery place on batter desulfater for about 2 weeks. Load test show 600 Cool Cranking Amps no self discharging (happy right).
Put in car start up right away. 2 weeks later still start but notice weak battery. Load test show 200 amps. But voltage steady at 12.4v So desulfate for another 2 weeks in car. Load test still show 200 amps.
So any idea what happen. It is not self discharging but how did it go from 200 Amps to 600 Amps and then Back to 200Amps.
thans