People kill more deep cycle batteries with poor charging practices, than die of old a

[Don Sr]

I have had trouble with my battery charging throughout the spring and summer. I replaced my batteries in Dec and again in July. It appears I'm doing a lot of things wrong some my fault and some just the situation I'm in - storing the boat in dry lot, temperature >100F, letting the boat sit unattended for months.

This past week the symtoms are back on 4 week old batteries - voltage spike to 17v while under way. Low voltage alarm after charging for 12hrs. I think this article explains some of the issues -

http://jgdarden.com/batteryfaq/carfaq16.htm

For those who are curiose - the batteries are interstate wet cell lead/acid batteries. So far interstate has replaced them no charge under there 1 yr warranty. As you can see from the article this is not the batteries fault.

 

[kpetry]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

If you are spiking to 17V while underway, I would be suspicious of a faulty alternator/charging system. That's the only way I know of to get 17V out of a 12V (14V max) system.

 

[sbw1]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

If you are spiking to 17V while underway, I would be suspicious of a faulty alternator/charging system. That's the only way I know of to get 17V out of a 12V (14V max) system.

Also a good way to kill batteries.

 

[stevea661]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

Proper charge rate is 14.5 to 14.7 VDC.

 

[Lazy Daze]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

Verify voltage at battery with a known, good voltmeter. Before you start throwing parts at it.

 

[mwph]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

Thanks for the link Don.

 

[Skuza]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

Will killing the batteries completely for a day due to leaving the wrong switch on kill brand new batteries also? Dad did this on accident and made me sick. Brand new Deka 31 Wet Cells this year...

 

[ShamuToo]

Re: People kill more deep cycle batteries with poor charging practices, than die of o

They should charge right back up if charged immediately.