![]() ![]() The higher the DOD the faster the lifecycles decline. If we drop that down to 25%SOC (75%DOD) we wouldn't see 750lc's, but likely only 680 or less. What we see is, for example, a 3000lc battery dropping to 1500lc's (50%) 50%DOD. That gray "marginal" range is less frequently visited and helps mitigate unnecessary losses. They are more likely to begin a charge cycle (or have their charger thresholds set) at 50+ (ie., 55 or 60). However, it's easier to use a general "rule of thumb" and the additional rate of decrease is still "marginal" considering that, in the course of using the 50% "rule", folks don't typically drop to 50%SOC. Some will only maintain optimal life capacity above 60% SOC. Not all batteries are created equal though. Beyond that, most batteries will start to have an increasing rate of loss. BillĪlthough there are a number of factors at play, the main reason it is recommended to not discharge "any" deep cycle (wet cell) battery below 50% is because that is the average SOC that most deep cells will be capable of maintaining maximum expected life. Edited Maby Yaromeįactory said 750 cycles 80% draw down. You buy whatever will keep the lights on. you can't run a single $90 6v battery by itself and if you only have $70 in your budget it's moot anyway. for $40 more you nearly double your ah capacity and get a longer term battery. Ie., 2x $73 60ah DC24's ($146 total) would get you ~120ah Alternatively, 2x $90 6v GC true deep cycles ($180) would get you 220ah's So. ![]() it's not a great value, but if the bucks are limited it's perfectly fine to get whatever you can afford and keeps you rolling, right!? The main thing being to charge them immediately after use and not "leave" them severely depleted.īang for your buck-wise. buy as many ah's you can for your dollar and then don't worry about SOC's. I would still try and get something with a higher capacity (or 2 lower capacity batteries). basically. If you're just looking for a single 1-year "trasher" battery then, really, anything goes. That's not to say that you "can't" draw them down more than that. 58ah capacity wet cell battery shouldn't be discharged below 50%SOC in order to maintain optimal battery health. Typically, any battery that has a CCA rating on it is going to be a starter or hybrid. The 24DC 12v is a hybrid marine/deep cycle (vs. I am planning on putting solar on my RV to help in keeping them charged. I'm looking at the 24DC as the battery compartment on my class C will only hold a group 24 battery. I'm therefore confused as to whether or not the 24DC battery, at $73.00, is a good buy and will last more than a year as compared to batteries in the $200 range. This seems unusual, since Costco is sellling them for $73.00. Nowhere on fact sheets at Interstae or Costco does it state the batteries AMP HOURS, but in talking with Interstate I'm told it is an 81 amp hour battery. Interstate also markets the 24DC battery. I'm just beginning to learn about the differences in batteries, so am not clear as to which batteries should not be discharged below 50%, and which can be discharge down to 80%. Since they are marketed as Marine/RV bateries, I'm tending to believe you should not discharge them below 50%. Does anyone have any experience with the Costco Interstate 12 volt 24DC Battery ? How reliable are they? How long do they last? Are they true Deep Cycle batteries? ![]()
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