Leaving batteries unattended with no charging or use.
By donald77777, Section Storage Posted on Sun Apr 20, 2008 at 08:12:12 PM MST
Just want to know how long they can last safely.

Hello everyone I just received 4 interstate U-2200 batteries. Now due to some unforeseen circumstances I have to shelf my solar setup. Now I was wondering how long can these batteries last without any damage in the garage (80F) without any charging or use?

Leaving batteries unattended with no charging or use. | 6 comments (6 topical)

Re: Leaving batteries unattended with no charging (3.00 / 0) (#1) by Flux on Sun Apr 20, 2008 at 02:25:40 PM MST

I don't know what technology those batteries are. 80F is rather warm for leaving batteries alone. If they are lead cadmium then several months may be ok and at more modest temperatures even up to a year if they are absolutely full charged at the start. If lead antimony then much shorter periods. If you can monitor the voltage I would start to get bothered below 12.4v if the period runs into weeks. You will almost certainly be able to recover them even down to 12v ( or pro rata if they are not 12v), but you may shorten the useful life. If you are not there and can't monitor volts then try to keep the period as short as possible and just hope. Flux

Re: Leaving batteries unattended with no charging (3.00 / 0) (#2) by wooferhound on Sun Apr 20, 2008 at 03:28:18 PM MST

I stored a fully charged Car battery for 1.5 years in a garage that ran from freezing to 90 degrees F. The voltage only went down 2/10 volt during that time and it appears to be working as good as the day I unhooked it from my solar power system. W o o f -={(

Re: Leaving batteries unattended with no charging (3.00 / 0) (#3) by kurt on Sun Apr 20, 2008 at 05:12:47 PM MST

in your garage?? most garages have 120v electrical power?? your best bet would be to buy a 12v 3 stage smart charger wire all the batteries up series parallel for 12v and hook them up to the battery charger a 3 stage charger will float them indefinitely just don't use the alligator clips that come with the battery charger make solid connections because the alligator clips tend to corrode and loose contact after a wile.  a 6 amp 3 stage smart charger would set you back about $50 or so and you have $200 worth  of batteries there so it is up to you....   IRC inst. just a personal rant carry on.

Re: Leaving batteries unattended ............. (3.00 / 0) (#4) by Usman on Mon Apr 21, 2008 at 06:03:04 PM MST

Hi, I hope the following link helps. http://www.fieldlines.com/story/2007/12/2/233728/480 Thanks.

Re: Leaving batteries unattended with no charging (3.00 / 0) (#5) by nick1234 on Mon Apr 21, 2008 at 10:24:58 PM MST

1st year okay top of after 12 mouths then every 6 mouths thats what the mfg. said to do we use to  get by the container

Re: Leaving batteries unattended with no charging (3.00 / 0) (#6) by dnix71 on Sat May 10, 2008 at 07:24:55 PM MST

u-2200's are 6 volt batteries http://www.ibsa.com/www_2001/content/products/product_6volt.asp You'll need two in series to make 12volts before attaching a trickle/float charger [ Parent ]

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