Balmar smart gauge and 10 hour AH testing
So this guy was selling an open box Balmar smart gauge on fleabay. They are expensive and I go by voltage to gauge my batterys by that. Well he had a make offer price so I lowballed @ $140. He didnt ...
Forum Discussion
Balmar gauge reads 71% soc
So 3 x 7.5 = 22.5AH and the gauge says that is 29% of full. So it thinks full is 77.6AH (out of rated 150)
Does the gauge know there are two batteries?
EDIT--LY you are right this is not lab standard, but it is "close enough for government work". We are trying to use the top 50% where things are fairly linear on discharge.
It was argued here some years ago that the bottom 50% would be different, but that is illogical. We never resolved that argument.
Doesn't matter, the idea is to get some idea of how things stand compared with the rating "as new".
The blurb here shows that you can use SG per SOC on the discharge
https://www.engineersedge.com/battery/specific_gravity_battery.htm
So 3 x 7.5 = 22.5AH and the gauge says that is 29% of full. So it thinks full is 77.6AH (out of rated 150)
Does the gauge know there are two batteries?
EDIT--LY you are right this is not lab standard, but it is "close enough for government work". We are trying to use the top 50% where things are fairly linear on discharge.
It was argued here some years ago that the bottom 50% would be different, but that is illogical. We never resolved that argument.
Doesn't matter, the idea is to get some idea of how things stand compared with the rating "as new".
The blurb here shows that you can use SG per SOC on the discharge
https://www.engineersedge.com/battery/specific_gravity_battery.htm
