Results 7,801 to 7,825 of 12727
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05-14-2021, 06:48 PM #7801Registered User
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- Idaho
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05-14-2021, 07:11 PM #7802
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05-14-2021, 07:57 PM #7803Hucked to flat once
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Optimas used to be awesome. Changed factories and QC a long time ago and now they are expensive and average. I'd look at a couple 6V AGMs for house. I replaced 2 4D AGMs which were huge, heavy, and expensive with 4 6Vs when I did solar and have have way more amp hours. I also have motor batteries so a different setup than you're looking at.
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05-14-2021, 08:29 PM #7804Registered User
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05-15-2021, 06:55 AM #7805
have any mags out there sprung for lithium drop in replacements; battleborn has great warranty, but spendy.
I like the idea of thousands of deep discharge cycles, the convenience of AGM mounting anywhere, need a solar controller with lithium mode though. want a setup separate from the class c house wiring which leaches my cheap AGMs to death in time for the 12mo free replacement.embrace the gape
and believe
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05-15-2021, 07:30 AM #7806
Have a battleborn in my trailer. It’s been solid. I looked around and there may have been options a few hundred cheaper but it was mostly direct from overseas and I questioned longevity. Lithium and Battleborn 10 yr warranty is the kind of brainlessness I want on a rv that sits until in service. I noticed pretty quickly the fast power up is neat compared to others regen time.
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05-15-2021, 09:17 AM #7807Registered User
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Really not clear on what you intend to power w the Lithium so it's hard to get an idea if they might be worthy of buying. To end tedious battery swapping perhaps a switch to isolate your batteries would eliminate the drain or add a built in battery charger or tender to keep them charged. I would think that should be done before buying lithiums.
You mention the 1000's of recharges, and they're significantly lighter, but another important difference is you get ~90% of the Ah out of it at a steady discharge rate. Lead acid batteries have a declining output.
I have been researching truck campers and lithium batteries for over a year and have the Battleborns spec'd on my build. Battleborn sells returned and rebuilt batteries on their webpage which can save you a few $$.
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05-15-2021, 10:31 AM #7808
I went with a set of Lion LiFePO4, 100ah. I wired them in parallel but for some reason only one battery would charge / discharge. The other would lose potential across the terminals. I can't figure out why, whether it's faulty batteries or faulty wiring. If faulty wiring, I'm having difficulty understanding how it could totally ruin the battery like that. It's happened twice so far, but I got both batteries as a pair, so maybe they just had a bad batch or something...
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05-15-2021, 10:33 AM #7809
thanks I was leaning towards splurging on the Battleborn for all those reasons plus you know,,,murica
plan to have 2-100w panels on the rv and 2 100ah batts in a case w/prosine 2000w inverter built in for a portable solar generator to charge onewheels and ebikes. then I can always jack into the rv house system if necessary. Haven't looked into a lithium charge controller yet may just get it from battleborn.embrace the gape
and believe
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05-15-2021, 10:37 AM #7810
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05-15-2021, 10:46 AM #7811
BattleBorn, with the interior heater, for solar charging below 27*.
Yes.
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05-15-2021, 11:18 AM #7812
Would love to have the built in battery heater. When my batteries die I’m in.
Sent from my iPhone using TGR ForumsI rip the groomed on tele gear
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05-15-2021, 12:30 PM #7813
Thanks again for the input. Yes my diesel heater/Jackery is an independent system. And it's actually an Audew, not a Jackery (but I didn't want to get in the weeds with details.) The Audew has jumpers on them and exceeds the normal 10A limit that most solar gens have. That was crucial for powering the diesel heater. Perhaps I would still have some juice left to jump start if needed. I am just looking for fail safes on a not totally ideal DC setup. So check me on this: Dual purpose batteries will have the same juice for either slow drain or CCA. The advantage is that if you drain to 50% of the batteries power, you wont do damage to the unit. Whereas, the normal starter battery will suffer damage with repeated drains and recharges. Yes? So, if I were to drain the dual battery 50% or more using my lights/ usb, I may not have the juice to start the truck, but I will not have done damage to the battery once it is recharged? I'm always amazed at the collective knowledge and experience on these forums....
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05-15-2021, 02:10 PM #7814
A general rule of thumb for any AGM or lead acid battery is to never consume more than 50% of the total amp hours the battery is rated for. So for a 100 amp hour battery, you never want to use more than 50 amp hours without recharging. If you do so repeatedly, it will shorten the life span of the battery dramatically. One advantage of LiFePO4 (lithium) is that that 50% rule doesn't apply and it is more like 90%.
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05-15-2021, 02:15 PM #7815
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05-15-2021, 02:21 PM #7816
Most modern solar charge controllers would have a lithium setting. I have a Victron SmartSolar Bluetooth MPPT Solar Charge Controller. Not the cheapest, but the bluetooth controls are slick and makes any trouble shooting easier. Victron makes a good battery monitor too, but expensive for what it is. Cheapo option is the AiLi Voltmeter Ammeter Voltage Current Meter. For ultimate lithium setup you would charge both from solar and get a dc to dc charger, which most have a lithium setting built in.
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05-15-2021, 02:21 PM #7817
Here's a decent comparison from someone that sells both
https://gpelectric.com/choosing-batteries-for-rv/powdork.com - new and improved, with 20% more dork.
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05-15-2021, 02:26 PM #7818Registered User
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Yes you're correct the dual use will withstand repeated deep discharges and continue to function as a starting battery once it's fully recharged. You should also be aware that the alternator will slowly recharge a drained battery, but it's best for the battery(no matter if it's a starting, dual use or deep cycle) to be recharged as quickly as possible.
You could plug in your devices with your existing setup and measure the drain overnight being prepared to recharge asap to give you an idea if possibly using a bigger than stock starting battery would work. Hopefully you have access to a 12v charger and a voltmeter. It really doesn't sound like you'd be pulling a lot of amps from your description.
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05-17-2021, 01:45 PM #7819Hucked to flat once
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Speaking of batteries, just picked up a Fiamma awning with 12v motor for my van on craigslist for $500. The lady was going to throw it away because they don't have a camper anymore and it was in the rafters in the garage. Her dad put it on CL.
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05-17-2021, 04:55 PM #7820
74 Tradesman just listed in Crested Butte, only 47k miles. Plus you can look like Uncle Rico.
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05-17-2021, 05:17 PM #7821
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05-17-2021, 07:12 PM #7822
damn that's a hard 47k miles.
powdork.com - new and improved, with 20% more dork.
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05-17-2021, 10:25 PM #7823Registered User
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- Feb 2018
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Had a '78 Dodge campervan just like that. We called it the 'Shit Brown Van'. Lots of great trips out the logging roads to windsurf to Nitnat on the west side of Vancouver Island. It ended up a portable surf shack on the beaches of Haida Gwaii.
The convection heaters in those old vans were not efficient but they required no electricity and did the job. I wish there was a modern equivalent.
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05-17-2021, 11:56 PM #7824
what i wanna know is
unless that's just a seatLast edited by powdork; 05-18-2021 at 08:52 AM.
powdork.com - new and improved, with 20% more dork.
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05-18-2021, 06:41 AM #7825439-0116
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