Hey Todd, Yep. We use the Sun Xtender and Lifeline 2 volt L16 AGM's for 12 volt systems in RV's and small off grid. We also sell the Tall GC2 battery for lower capacity applications. So far, so good.
I have not sold any flooded 2v L16's but we have sold Crown 6 volt L16's for years and I have not had a single failure yet. Larry Crutcher Starlight Solar Power Systems On Sep 17, 2011, at 10:36 AM, [email protected] wrote: > What about the 2 volt L-16 versions? Has anyone had success with them for > larger banks? I work alone and HUPs are too heavy to lift on my own... > however 24, L-16's in one series string would be a hell of a battery bank too. > > Todd > > > > > On Friday, September 16, 2011 1:03pm, "Ray Walters" <[email protected]> said: > > Larry, > > I totally agree, that's a ridiculous # of batteries and strings. If that's > really the case, it seems L16s will still need 4 to 5 strings, which is also > crazy. I see only one solution to this battery bank, and that is the HUP or > other large 2 v cell battery. Comparing golf cart batteries to L16s isn't > even on the plate for good design in this case. For me, HUPs become a no > brainer, as soon as the required amp hours gets into the 1000 AH or higher > range. BTW, don't ever use the 100 hr rate for the Rolls, as they are way too > optimistic. The 20 hr rates are much closer to reality. The Rolls S-530 > becomes a 400 AH battery at the 20 hr rate, also they list cycles @50% DOD, > when everyone else is looking at 80%DOD, be aware. > Here's some quicky math, with costs pulled off the internet: > 3 strings of S530s (@24v) would get you 1200 AH for $4200. cycle life at 80% > DOD about 450 to 500 cycles. > HUPs group 25 have 1270 AH and cost $7392, but last 2100 cycles to 80%DOD. > That's about 11.5 cents/ kwh for the life of the battery compared to about > 29.2 cents/ kwh for the Rolls S-530s. > This quicky calculation doesn't even include the extra maintenance required > for watering the L16 type battery, nor the fact that you will have 4 battery > replacements for the same time the HUPs just have one replacement. > Its very fair to say that the HUPs are more cost effective by about a 3 to1 > ratio. > > Ray > > > > Having 6-8 parallel strings of golf cart batteries is a terrible idea no > matter how much better the GC2 may be. > Larry > On Sep 16, 2011, at 10:01 AM, Ray Walters wrote: > > The real point is that the Xantrex guy is correct from a scientific stance. > Experimental battery cycle life data shows that some golf cart batteries > (T105) do have more rated cycles to 80%DOD than the Trojan L16. (750 vs about > 600) A really crappy golf cart battery (some have cycle life below 400 > cycles) isn't as good as an L16, yes. You have to base your decision, and > your mouth, on test data for the batteries considered. Also, you must always > compare at 80% DOD, for an apples to apples comparison. Its usually a clue if > a manu doesn't publish their cycle life data. Of course you must temper the > golf cart vs L16 decision with good paralleling technique. > We use golf cart batteries (never more than 4 strings), jump straight to the > HUPs for larger banks, and skip the L16s all together. They just don't make > sense when you look at the cost/ amp hr vs their lifespan. > The only time I could see using L16s, was if the battery bank requirements > were beyond 4 strings of golf cart batteries, and the customer just could not > afford the HUPs, or were going to sell the property soon, and wouldn't > appreciate their long term value. > I've spent a lot of time looking at cycle life data, comparing costs, adding > in maintenance and replacement labor, etc.. > L16s are serious losers on a $/ kwh operating cost comparison, so this is a > chance to up sell the customer to HUPs (or equivalent) and make both of you > happier in the long run. > > Ray Walters > > > > > > Sent from Finest Planet WebMail. > _______________________________________________ > List sponsored by Home Power magazine > > List Address: [email protected] > > Options & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > List-Archive: > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out participant bios: > www.members.re-wrenches.org >
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