[tortuga]

Greetings I have 120VDC Lead acid pack not performing well. After leaving the pack on the charger for a long time (standby) the battery pack only is only @120V?
I would expect 149VDC no?
I took the truck for a spin today and my volt meter showed 110 - 94V while the motor was running.
The battery states

Constant Voltage charge @20℃
standby Use is 13.6 - 13.8 Initial Current 16.5A
Cyclic Use 14.5-14.9V Initial Current 33A

(See photo)
When charging this 10 pack of 110AH 12V lead acid batteries should the voltage not be 140 ~ 149 VDC?
I am measuring 129VDC to 132DC off the charger @ 7-9 DC Amps.
I cant find much info off the charger it says "InPower" I cant see a model number. Does anyone know anything about these?
Perhaps I will pull out the to see if there is more info.
Thanks in advance.

EDIT after charging for a while I do observe 146V @ 4.5A

EDIT2 I removed the charger and it says CleanPower CHWP-12008
(See photo)

 

[tortuga]

Yeah okay thanks for the feedback, the UB-121100 batteries are about 2-1/2 years old. I have put about 500 Miles on them in the two years I have had this truck.

I think I found some specs on them here:
https://pdf.wholesalesolar.com/batt...50.417361640.1515196994-1413914165.1515196994

Seems like I can only get about 8-10miles on a charge lately.
Do you think its a bad idea to just leave the charger plugged in all the time when the truck is not in use?

 

[tortuga]

Depends on the charger, if it transitions to Float after Full NP.

Yeah ouch I am hoping they are not shot. They probably have had ~90 charge cycles.
Its now ~4 hours later and the InPower "CleanPower CHWP-12008" charger now is floating them at 156V draw is ~ 2amps.
I guess its time to look for a 120V Lithium option.