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Discussion Starter #1 (Edited)
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)
 

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Seems normal.

Depending on charger amps output it could easily take over ten hours to fully charge from 50% depleted.

Aged lowered capacity batts can take much longer.

Even a small healthy bat is 5-7 hours.

100% Full would mean tail amps dropping to say under 5A.

Are those supposed to be quality true deep cycling? Not according to vendors, but trusted objective sources.
 

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Discussion Starter #3

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

They say those batts are only rated for maximum 500 cycles at 50% DoD, way less if you've been going deeper.

Not what I would call true deep cycling.

IOW they're shot, replace with better.

IMO the best lead battery value by far is Duracell (actually Deka/East Penn) FLA deep cycle golf cart batteries, 6V, around $90 per @200+AH from BatteriesPlus or Sam's Club

But keep DoD below 50% if you want longevity.
 

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Replace!

But not with Lead
How much do those cost?
I bet they are more than $180 each - and I got a Volt pack for $1800

Reconfigure it and you will have over twice the available amp hours - nearer to three times
 

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Discussion Starter #6
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.
 
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