LiFePO4 battery sizes that fit in 200 drawer wings (3 Viewers)

[DPA200]

My SOK battery order just got cancelled so now it’s back to the drawing board. Any particular reason to get the 18amp victron vs the 30amp?
Less load on the alternator?

Or split the difference (almost) and go 25A with RedArc . I'd read some RedArc article about the low and slow approach to charging. They basically just said anything under 200Ah is best suited with around 25A charger. That being said, I think that mainly applies to AGM where lithium can handle a much faster charge if you want it. I've seen several builds that went 40A with a 100Ah battery

 

[radman]

Or split the difference (almost) and go 25A with RedArc . I'd read some RedArc article about the low and slow approach to charging. They basically just said anything under 200Ah is best suited with around 25A charger. That being said, I think that mainly applies to AGM where lithium can handle a much faster charge if you want it. I've seen several builds that went 40A with a 100Ah battery

redarc seems to be to go-to around here, but victron offers Bluetooth and much more granular programming.

 

[DPA200]

redarc seems to be to go-to around here, but victron offers Bluetooth and much more granular programming.

Yeah I also spoke with an electrical engineer last week that said Victron's solar charging algorithm is much better than the RedArc. I went with RedArc but I am going with the Victron 712 monitor/shunt combo, so I that does have the awesome Victron Bluetooth and app features. Or another option is just the Victron smart shunt if you want the Bluetooth but don't need the physical monitor, that's what @sdnative I said he had

 

[Hants]

Yeah I also spoke with an electrical engineer last week that said Victron's solar charging algorithm is much better than the RedArc. I went with RedArc but I am going with the Victron 712 monitor/shunt combo, so I that does have the awesome Victron Bluetooth and app features. Or another option is just the Victron smart shunt if you want the Bluetooth but don't need the physical monitor, that's what @sdnative I said he had

I’ve heard similar from someone who does extensive testing of solar panels and solar charge controllers... the RedArc solar charger is significantly behind the leading solar chargers.

 

[sdnative]

Or split the difference (almost) and go 25A with RedArc . I'd read some RedArc article about the low and slow approach to charging. They basically just said anything under 200Ah is best suited with around 25A charger. That being said, I think that mainly applies to AGM where lithium can handle a much faster charge if you want it. I've seen several builds that went 40A with a 100Ah battery

Most if not all LFP batteries can handle 0.5C charge (50A into a 100Ah battery), some can handle more. For a 100Ah LFP battery, any of the chargers with LFP specific profiles up to 50A should be fine, just depends on how fast you want to charge. Of course double check the spec sheet on your specific battery. I am not aware of any minimum required charge rate for LFP batteries.

 

[Hants]

Or split the difference (almost) and go 25A with RedArc . I'd read some RedArc article about the low and slow approach to charging. They basically just said anything under 200Ah is best suited with around 25A charger. That being said, I think that mainly applies to AGM where lithium can handle a much faster charge if you want it. I've seen several builds that went 40A with a 100Ah battery

The Relion RB75 I have, specs say recommended charge rate is 3.7A-37.5A, and max charge current is 75A. LiFePo batteries all have internal charge controllers, AFAIK. This means that they likely have hard limits to specs like charge rates (for instance, I would be quite surprised if you could charge at >75A, or discharge at higher than the specified limit).

Regarding the earlier conversation about charging temps, from 14F to -4F they recommend significantly lower charge rates.

I have had AGM batteries in multiple vehicles. Due to the low internal resistance, they have very high charge and discharge rates, and no built-in charge controller to limit.

If you look at the charge profile on any of these batteries, only “bulk” is at high amperage. Things like cable length and diameter requirements play into the recommended charge rate, in addition to the practicalities of how long (wall time) it takes to materially charge your battery bank.

 

[tbisaacs]

A Weize 100 amp hour will fit.

 

[Fisher23]

I have one of the green ones (name begins with a V) in the driver side wing. It's a 144 amp hr on a 40 amp charger. Like mentioned previously battery will not fit in the passenger side wing with ARB boxes

 

[Wes Gardner]

A Weize 100 amp hour will fit.

I really love those Will Prowse videos

 

[txtortoise]

Just another data point/source for those still designing...

Winch-centric article, but the battery website has some interesting options heading over here.

High-temperature-tolerant, winch-capable LiFePO4 batteries from DCS — Exploring Overland

Back in the late 1990s I wrote a review in Outside magazine comparing compact 35mm cameras with the new generation of digital cameras, which were just becoming practical alternatives for casual use. (Some of them employed sensors that were breaking the miraculous one-megapixel barrier.) At the en

www.exploringoverland.com

 

[rlynch356]

Mine is mounted in a goose gear platform behind the fridge..
Leaves the wing sides open for other stuff.

 

[tbisaacs]

Here is my write up on this type of installation

Travis's house battery install

First, some background. There are a lot of ways to charge phones and run fridges and lights at camp. I've tried them all over 5 years: First-gen lead acid Goal Zero Yeti + solar KISS-style single battery plus solar PWM controller Lithium Goal Zero Yeti + solar Needless to say — I'm a big fan...

forum.ih8mud.com

 

[sreyes1103]

Does anyone know the sizes that would fit the starter battery and 2nd battery location?

 

[tbisaacs]

Does anyone know the sizes that would fit the starter battery and 2nd battery location?

I don’t have them handy but some folks have shoved in a 100aH battery up there by trimming the tray etc.

 

[sreyes1103]

I don’t have them handy but some folks have shoved in a 100aH battery up there by trimming the tray etc.

Right on, thank you! Ill look into it more.

 

[100kiwi]

Does anyone know the sizes that would fit the starter battery and 2nd battery location?

I have this DCS battery in the old starter location.
Then a group 34 yellow top for the starter on the passenger side

 

[sreyes1103]

Were you not able to use the dcs as your starter or just chose to this configuration?

I was interested in doing a dual lithium set up.

 

[100kiwi]

Were you not able to use the dcs as your starter or just chose to this configuration?

I was interested in doing a dual lithium set up.

I chose this config. I wanted the max capacity for the house battery, the starter was fine so didn't touch it. I never considered the dual Lithium as I have a winch which can pull some high amps.

 

[sreyes1103]

I chose this config. I wanted the max capacity for the house battery, the starter was fine so didn't touch it. I never considered the dual Lithium as I have a winch which can pull some high amps.

Thank you for the info!