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Sprinter RV's & Conversions Talk Common features found in Sprinter RV's and Conversions. |
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#11 |
Join Date: Apr 2018
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No industrial but designed for guaranteed overnight.
Best chargers for bigger banks are those designed for deep cycling banks in marine use, definitely not the automotive stuff. I like Sterling ProCharge Ultra and ProMariner Pronautic P. FLA you can get away with amps output of .15 - .2C (20A per 100AH), but ideally over double that needed for AGM longevity, Lifeline specs .4C minimum I believe. AGM needs greater care not to overcharge, FLA just keep adding water NP. Plus a cheap hydrometer gives accurate SoC info. |
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#12 |
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No lead bank gets to 100% Full in under 6-8 hours no matter how big the charger, and they need to get back to that at least a few times a week for longevity.
For those actually sensitive to FLA fumes, not hard to box the bank and vent to outside, just as you're meant to do with the propane locker. Only real justification paying the extra for AGM is the install space is hard to reach or requires lying them down. Or with very high amp output rates like winches. . . Last edited by john61ct; 12-07-2018 at 05:33 PM. |
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#13 |
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Extended time off grid requires conservation. I prefer to avoid inverters as much as possible, adapt to 12V native as much as possible for electronics, propane for heat production.
So much cheaper than trying to keep up with inefficient usage of devices designed for mains power. |
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#14 | |
Poly - Thread Finder
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I hear that. The same has happened with boats. At one time a 15 amp receptacle was considered a luxury for a sailboat moored on a wall. Now 30 amp and even higher amp receptacles are expected. People want to "get away from it all" with boats and RV's, but only if they can bring it all with them. ![]()
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DAD NAS (N. Amer. Spec) 2004 140 2500 >326,000+ mi. 2006 Freightliner 140 2500HC >172,000+ mi. Arctic Whitewash (Spotted Snow Leopard accents) "My opinion and worth everything you'll never pay for it." assumed. Anyone can hold the helm when the sea is calm. Publilius Syrus "There are only 10 types of people in the world: Those who understand binary, and those who don't." HaWiiLuVeR 16 ounces of unnecessary prevention can be worth a pound of manure. |
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#15 | |
2006 2500 140 HT 263k
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The marine blog is above my education. Lots of vocabulary I don't understand yet but trying.
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#16 |
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First google keywords or "phrases in quotes".
If still not grokking, feel free to post specific Qs. After a while it all starts sinking in. My DC Electrics 101 thread on vandwellers: http://www.cheaprvliving.com/forums/....php?tid=28197 |
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The Following User Says Thank You to john61ct For This Useful Post: | sethlp (12-07-2018) |
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#17 | |
2006 2500 140 HT 263k
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![]() The van is going to be an adventure van/tour bus. I guess one in the same. Thanks for the discussion.
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#18 |
06/2500/140
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to the OP:
i'd think about a full-sine inverter/charger combo, i have an outback 2500w/125a unit. if you look at what GOOD high output batt chargers cost, marine-rated units tending to be the best, it's like getting the inverter for free! i can replace 90% of my typical overnight drawdown in about an hour with the outback, with 200w of PV doing the top-off (have been doing this for about 15yrs now, no problems) ![]() ps: O&BTW, i'm running 400ah of AGM batts (no issues with gassing/corrosion, 15% 'easier' to rechg) and will typically use 50-60ah overnight in summer, 80-90ah in winter (running a D2 appx 16hours) most of it is for making heat with the inverter, for cooking with a 700w mwave, toaster, coffeemaker, crockpot, ricecooker etc. with a 12vdc refrig, along with a hair drier to heat up/dryout ski boots etc
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my rig: 2006(dodge)2500/140wb/hitop me: marine electrical, refrigeration & corrosion specialist (ABYC certs), off-grid power/refrig consulting 25+years (and with the sprinter, now re-learning everything i ever knew about vehicles :) Last edited by outbound; 12-07-2018 at 06:45 PM. |
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#19 |
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Ah yes, the better half can definitely increase the need for AH capacities
But happy wife happy life, all part of the price we pay for companionship, may it last into our dotage. . . 8-) |
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The Following User Says Thank You to john61ct For This Useful Post: | HarryN (12-07-2018) |
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#20 |
2013 Sprinter DIY 144WB
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I believe the proper word is not “fumes” but mist. Sulfuric acid doesn’t exist in a vapor phsde, at higher temperatures it brakes down to SO3 and H2O and this is not happening at room temperatures. Hydrogen and oxygen gases are generated during charging to various degree, known as outgassing, via bubbling they carrying tiny drops of battery acid in liquid phase. The end result is the same, very corrosive.
I think all flood acid batteries manufacturers required full venting, batteries can be placed anywhere as long they are in a fully vented compartment separated from living space. Another reason for venting is removal of hydrogen and oxygen mixture which can explode via spark or open flame. I believe that Fullriver, AGM batteries which I have also recommends not to place their batteries in living quarters, so even AGM batteries can outgas explosive gases in case of charging equipment malfunction, likely rare, and I ignored it this recommendation in my conversion. |
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