8 month batt storage , 48.4V

Golferdave · 11-18-2017, 10:47 PM

Full charge mid Mar 65.3 v
Got back mid Nov 48.4

Removed cables, cleaned , dried , battery terminal spray on batts

Not optimal for battery life but it's what I got

Golferdave · 11-18-2017, 10:54 PM

Connected them ,48.4 V
They Charged for over 12 hours
Charger was off this am
18 holes today, no problem
Charging tonight for 5 hours so far, about 4 amps now

Muddog · 11-18-2017, 11:07 PM

I wish I had set of 48v that charged to 65v.
I hope you had your DVM connected during finish cycle of charge. At the end of charge cycle your charger will go into the mid 60v range.
Once charge is finished and batteries settle, you should see 50.9v, that is 100% full state of charge for a 48v bank.
As long as as the batteries had water, there shouldn't have been any damage done. That wasn't enough voltage drop to do damage.
If your have year round power get a battey maintainer, it will keep your batteries charged in offseason.
If not, after final charge disconnect all battery cables.

Golferdave · 11-19-2017, 12:03 AM

Yea
Was 65.4 when the charger shut off
Dropping as I took March pic
May check volts in the am to know what it settles to?

Water level looked good (over the plates anyway)
but
need to check again after 2 hard charge cycles

Golferdave · 11-19-2017, 12:48 AM

Am guessing the obc will be charging as
if new batts were installed.

Anything I should watch for?

Muddog · 11-19-2017, 01:16 AM

You're good. Watch water level.
The OBC is doing it's job. Your charging times are good. Let the charger do it's job.

WalterM6 · 11-19-2017, 09:35 AM

65.3V is way too high for a battery to charge. It is even to high for an equalization charge.

NoleFan4Ever · 11-19-2017, 01:10 PM

I routinely see ~63v on my PD3 at the end of the charge.

WalterM6 · 11-19-2017, 05:46 PM

You better replace it with a DPI charger.

teecro · 11-19-2017, 07:13 PM

Quote:

Originally Posted by WalterM6

65.3V is way too high for a battery to charge. It is even to high for an equalization charge.

64.8 highest according to Trojan I suppose one has to question the meter taking the readings?

11-18-2017, 10:54 PM	#2
Golferdave Gone Wild Join Date: Dec 2016 Location: Alaska/SoCal Posts: 549	Re: 8 month batt storage , 48.4V Connected them ,48.4 V They Charged for over 12 hours Charger was off this am 18 holes today, no problem Charging tonight for 5 hours so far, about 4 amps now

11-18-2017, 11:07 PM	#3
Muddog Crazy Wild Join Date: Jun 2015 Location: Carolina Lowcountry Posts: 796	Re: 8 month batt storage , 48.4V I wish I had set of 48v that charged to 65v. I hope you had your DVM connected during finish cycle of charge. At the end of charge cycle your charger will go into the mid 60v range. Once charge is finished and batteries settle, you should see 50.9v, that is 100% full state of charge for a 48v bank. As long as as the batteries had water, there shouldn't have been any damage done. That wasn't enough voltage drop to do damage. If your have year round power get a battey maintainer, it will keep your batteries charged in offseason. If not, after final charge disconnect all battery cables.

11-19-2017, 12:03 AM	#4
Golferdave Gone Wild Join Date: Dec 2016 Location: Alaska/SoCal Posts: 549	Re: 8 month batt storage , 48.4V Yea Was 65.4 when the charger shut off Dropping as I took March pic May check volts in the am to know what it settles to? Water level looked good (over the plates anyway) but need to check again after 2 hard charge cycles

11-19-2017, 12:48 AM	#5
Golferdave Gone Wild Join Date: Dec 2016 Location: Alaska/SoCal Posts: 549	Re: 8 month batt storage , 48.4V Am guessing the obc will be charging as if new batts were installed. Anything I should watch for?

11-19-2017, 01:16 AM	#6
Muddog Crazy Wild Join Date: Jun 2015 Location: Carolina Lowcountry Posts: 796	Re: 8 month batt storage , 48.4V You're good. Watch water level. The OBC is doing it's job. Your charging times are good. Let the charger do it's job.

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11-19-2017, 09:35 AM	#7
WalterM6 Gone Wild Join Date: Apr 2017 Location: SE TN Posts: 2,226	Re: 8 month batt storage , 48.4V 65.3V is way too high for a battery to charge. It is even to high for an equalization charge.

11-19-2017, 01:10 PM	#8
NoleFan4Ever MOD of all BS! Join Date: Sep 2011 Location: Florida Posts: 17,477	Re: 8 month batt storage , 48.4V I routinely see ~63v on my PD3 at the end of the charge.

11-19-2017, 05:46 PM	#9
WalterM6 Gone Wild Join Date: Apr 2017 Location: SE TN Posts: 2,226	Re: 8 month batt storage , 48.4V You better replace it with a DPI charger.

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