Gel Cycle Life [RE-wrenches]
Travis Creswell, Ozark Solar
ozsolar at ipa.net
Wed Apr 9 12:33:57 PDT 2003
Hello All,
I am looking at using some MK gel batteries on job where maintenance is
likely to be a problem (and how is that different than any other job?). The
customers seem interested in paying more for no battery maintenance. The MK
batteries are priced very well if you know where to buy them.
It's a weekend hunting camp that's likely to be heavily discharged, 80% or
more DOD, when it's used approximately once per month. Still, that's many
years according to the factory cycle curve. And yes, I'm worried about
charge regulation which makes the NVRAM of the Outback equipment especially
attractive.
The MK Gel battery cycle curve shows
2500 cycles @ 25% DOD
1100 cycles @ 50% DOD
750 cycles @ 75% DOD
500 cycles @ 100% DOD
The MK AGM battery cycle curve shows
1200 cycles @ 25% DOD
500 cycles @ 50% DOD
250 cycles @ 75% DOD
200 cycles @ 100% DOD
I always thought AGM's were much better cycling batteries than GEL? The GEL
cycle curve is almost unbelievable.
Anyone else think that GEL cycle curve is way out of line?
Travis Creswell
Ozark Energy Services
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