
MovieMaker
USA
Asked
— Edited

Josh, when you charge your batteries, how high does your voltage go. I have not been able to get more than 12.2 when I charge the three of them all together. Is that ok for that battery. You know the battery-two for $37.50.
Thanks,
Mel
You know the ones POWER something or other.
Typically, this should be charged at over 12v, common voltage is around 14v, then drops if it's a trickle charger.
When fully charged the battery voltage should be 12.7v
You haven't said if that voltage is while charging, charger voltage or battery voltage after charge.
What voltage is the charger? i.e. what voltage is reported on the charger if you have no battery connected?
What voltage are the batteries when you take them off charge?
What charger and rate are you using?
FYI Powersonic is a brand name of SLA battery, they will have the same characteristics as any other SLA battery. The information on the page I linked to earlier will apply to all Lead Acid batteries, it's worth reading.
Nearly all batteries will not reach full capacity until cycled 10-30 times. A brand new battery will have a capacity of about 5-10% less than the rated capacity. Batteries should be watered after charging unless the plates are exposed, then add just enough water to cover the plates. After a full charge, the water level should be even in all cells and usually 1/4" to 1/2" below the bottom of the fill well in the cell (depends on battery size and type).
@Mel , we were having a discussion about batteries balancing the voltage. When in parallel one battery could have a slightly different voltage than the others. This has to do with the resistance of the individual battery and that each battery will be slightly different. Do not use the 10amp charger on one battery . Use the 2 amp. The recommends for best efficiency to limit current to 2.7 amps.
Sidenote : lookup the specs on your 10 amp charger and make sure it keeps up high enough voltage to fully charge these batteries. Specs say this battery needs 14.4 to 14.7 volts from a charger.