Forum Discussion
landyacht318
Feb 23, 2017Explorer
Yes, they have lost some capacity.
Batteries self discharge, and they have shelf lives.
They self discharge more with age, and with higher temperatures.
YOu should fully charge them and then Ideally perform an Equalization charge, if the cells do not all read 1.275+ on a Hydrometer.
Equipment and processes for doing this have been discussed in depth dozens of times on this forum.
I have a freind who once purchased high$$ AGM batteries and never put them into use. Years later, he kept muttering they were brand new and never used, yet the voltmeter and charging sources proved theses new batteries were sulfated and worth only their weight in lead.
Sadly this did not prevent him from repeating the unwise decision, and I go there with my charger every month and top them up, but they are now over 2 years old. 800$ worth of top quality battery wasting away, slowly. They'd be near useless if I did not top them up regularly. they are due now.
Batteries self discharge, and they have shelf lives.
They self discharge more with age, and with higher temperatures.
YOu should fully charge them and then Ideally perform an Equalization charge, if the cells do not all read 1.275+ on a Hydrometer.
Equipment and processes for doing this have been discussed in depth dozens of times on this forum.
I have a freind who once purchased high$$ AGM batteries and never put them into use. Years later, he kept muttering they were brand new and never used, yet the voltmeter and charging sources proved theses new batteries were sulfated and worth only their weight in lead.
Sadly this did not prevent him from repeating the unwise decision, and I go there with my charger every month and top them up, but they are now over 2 years old. 800$ worth of top quality battery wasting away, slowly. They'd be near useless if I did not top them up regularly. they are due now.
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