4X12 Volt SLA 7 Ah final charge voltage

[PHC]

I purchased 4 X 12 Volt 7 Ah SLA batteries from my local surplus discount electronics place ($10 each )and I wired them in a series for a 50 volt pack. I was wondering what the final charged voltage of the pack should be so I can verify it has a full charge?


Thanks,
Paul

 

[Kin]

I believe the max voltage of a 12v SLA is 14.4 volts which would be 57.6.
But it can vary between 13.8-14.4 according to a quick google search.

 

[wesnewell]

Hot off the charger, mine was 53.8V. If all cells were perfect, it would be 54V. 24x2.25V.

 

[Kin]

Wes,

You're right.
The pretty awesome resource,

http://batteryuniversity.com/learn/article/charging_the_lead_acid_battery

Confirms that 2.25 (not my original number) is the right "per cell" amount. So that's 2.25*6 = 13.5; * 4= 54v {or 53.8 as you got}

 

[chessir]

PHC

Where can you get these 12v sla for $10 ?? Do you have more details?