Battery problem need opinions?

beach cart · 11-26-2015, 05:04 PM

I have 48v 2007 txt with 8 deka 245 amp. Batteries. Ive noticed a decrease in range. Batteries 3 yr. 10 months old. 7 read 6.43 or.44 except 1 read 5.4, the last in the string, after 15 mile run. I know this is bad, but should i just replace it or bite the bullet on 8 new ones. I'm leaning toward a good used one if i can find one. Opinions please.

kgsc · 11-26-2015, 05:48 PM

You could look at one of the smaller Duracell batteries.. New may be close to the same ah as your current ones at 4 years old.

beach cart · 11-26-2015, 07:10 PM

I would love to do that, I always heard on here to match amperage, would lower amp duracell drag the rest down.

teecro · 11-26-2015, 07:24 PM

Quote:

Originally Posted by beach cart

I have 48v 2007 txt with 8 deka 245 amp. Batteries. Ive noticed a decrease in range. Batteries 3 yr. 10 months old. 7 read 6.43 or.44 except 1 read 5.4, the last in the string, after 15 mile run. I know this is bad, but should i just replace it or bite the bullet on 8 new ones. I'm leaning toward a good used one if i can find one. Opinions please.

Ok going out on a limb here and suggest that you recheck all your battery voltages here.... As if 7 of your 6 volt battery are still showing 6.44 volts after a 15 mile run I'd like to buy them from you... LOL As at 100 % SOC a six volt battery should be holding 6.37 to 6.4 volts and IF all eight battery were holding 6.44 as you claim your pack voltage would be 51.52 volts which is well above full cap..... Barring all that I would not mix a new battery in with 4 year old batteries. If the budget is tight look for a used battery...

beach cart · 11-26-2015, 07:59 PM

My bad, 6.34 and 6.33 measured with a digital meter. When fully charged I read 52.4 thats the dpi reading. No matter, the 5.4 is cooked, i will look for used, got a feelin, 245 amp used will be hard to find.

teecro · 11-26-2015, 08:15 PM

Quote:

Originally Posted by beach cart

My bad, 6.34 and 6.33 measured with a digital meter. When fully charged I read 52.4 thats the dpi reading. No matter, the 5.4 is cooked, i will look for used, got a feelin, 245 amp used will be hard to find.

Those are still some very good readings at 95ish % SOC

kgsc · 11-26-2015, 09:30 PM

Quote:

Originally Posted by beach cart

I would love to do that, I always heard on here to match amperage, would lower amp duracell drag the rest down.

Well my thought was that the 245 batteries would have a lower ah rating after 4 years and a Duracell 215 might be close. Just a guess.

beach cart · 11-26-2015, 10:06 PM

You probaly right wnd its cheaper for sure

Volt_Ampere · 11-27-2015, 10:17 AM

If your batteries are 4 years old, I would go for a new set instead of replacing the first failure. The others are not far behind probably.

JohnnieB · 11-27-2015, 11:10 AM

Run at 42V until the next battery goes belly up and start saving for a matched 48V set of new batteries.

11-26-2015, 05:04 PM	#1
beach cart Gone Wild Join Date: Dec 2011 Location: Jacksonville Beach, FL Posts: 606	Battery problem need opinions? I have 48v 2007 txt with 8 deka 245 amp. Batteries. Ive noticed a decrease in range. Batteries 3 yr. 10 months old. 7 read 6.43 or.44 except 1 read 5.4, the last in the string, after 15 mile run. I know this is bad, but should i just replace it or bite the bullet on 8 new ones. I'm leaning toward a good used one if i can find one. Opinions please.

11-26-2015, 05:48 PM	#2
kgsc Gone Wild Join Date: Dec 2009 Location: Aiken, SC Posts: 13,130	Re: Battery problem need opinions? You could look at one of the smaller Duracell batteries.. New may be close to the same ah as your current ones at 4 years old.

11-27-2015, 10:17 AM	#9
Volt_Ampere Gone Wild Join Date: May 2012 Location: Rio Verde, Az Posts: 7,167	Re: Battery problem need opinions? If your batteries are 4 years old, I would go for a new set instead of replacing the first failure. The others are not far behind probably.

11-27-2015, 11:10 AM	#10
JohnnieB Techno-Nerd Join Date: Jun 2011 Location: West Virginia Posts: 19,654	Re: Battery problem need opinions? Run at 42V until the next battery goes belly up and start saving for a matched 48V set of new batteries.

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11-26-2015, 07:10 PM	#3
beach cart Gone Wild Join Date: Dec 2011 Location: Jacksonville Beach, FL Posts: 606	I would love to do that, I always heard on here to match amperage, would lower amp duracell drag the rest down.

11-26-2015, 07:59 PM	#5
beach cart Gone Wild Join Date: Dec 2011 Location: Jacksonville Beach, FL Posts: 606	My bad, 6.34 and 6.33 measured with a digital meter. When fully charged I read 52.4 thats the dpi reading. No matter, the 5.4 is cooked, i will look for used, got a feelin, 245 amp used will be hard to find.

11-26-2015, 10:06 PM	#8
beach cart Gone Wild Join Date: Dec 2011 Location: Jacksonville Beach, FL Posts: 606	You probaly right wnd its cheaper for sure

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