200 amp AC powered charger?

[hbn7hj]

Looking for a 200 amp “12 volt” battery charger powered by AC. Smart with a lithium profile preferred but I’ll take dumb with a 14.4 volt lead acid setting.

I’d settle for two 100 amp chargers with 14.4 volt output. if they are “dumb.”

Just dreaming.

[mkguitar]

jeez for 200 amp you'd need #2/0 cable


mike

[hbn7hj]

Originally Posted by mkguitar

jeez for 200 amp you'd need #2/0 cable

Output would be distributed. A lot of parallel 4 gauge or 6 gauge.

Iota has a smart 90 amp charger for lead acid that can charge at 14.2 and has a parallel module to control two of them. If they would kill the lead acid profile I think it would work. No answer yet.

I presented the topic here because there is a lot of knowledge and original thinkers here.

I would like to improve on a 100 amp charging rate powered by AC. I’m not going the Under Hood Generator route.

[booster]

I think you could use two 100 amp Magnum chargers as long as you had the remotes with them so you could set your own parameters.


I doubt you will find a "dumb" setting, but you could do the full cutoff/rebulk setup that would work. The good is that you could also set max times and also have temp compensation.


I am sure other programmable chargers on the high end would also be able to do similar.


Or you could just go out and buy a 200 amp regulated power supply.


Are you going to be using 50 amp RV input cord?

[@Michael]

Originally Posted by booster

Or you could just go out and buy a 200 amp regulated power supply.

Or one dumb high current regulated power supply in parallel with a smaller programmable smart controller? Set the dumb one at a fixed 13.4V and the smart one to a proper profile?

[hbn7hj]

Originally Posted by booster

Are you going to be using 50 amp RV input cord?

Nope, 4kw generator only. Should be less than 3000 watts. Will look into the Magnum.

[hbn7hj]

Originally Posted by booster

I think you could use two 100 amp Magnum chargers as long as you had the remotes with them so you could set your own parameters.

Didn’t find a 100 amp charger on their website, only a 100 amp inverter charger that weighs 55 lbs. Did I miss it?

[hbn7hj]

Originally Posted by @Michael

Or one dumb high current regulated power supply.

Got one in mind?

[@Michael]

Originally Posted by hbn7hj

Got one in mind?

Looking outside the boating/RV world, I see XP Power and Voltec have high current supplies (up to 200A).

XP Power HDS or HDL series look interesting. I suspect that putting two smaller ones in parallel would be better, unless you have 220V input. You need external components in order to adjust the output voltage. In theory, a 15v model with external resistors to adjust it down to whatever voltage you want would work.

My thinking was to set the dumb fixed supply to 13.x and let a smaller, conventional smart charger finish off the charge by bringing the bank up to 14.4. That might not be necessary though.

Could also turn this into a 'smart' charger with a bit of electronics on the control side of the power supplies.

No experience with either though, so take this for what it's worth.

https://www.xppower.com/portals/0/pdfs/SF_HDL3000.pdf
https://www.xppower.com/portals/0/pdfs/SF_HDS3000.pdf

--Mike

[hbn7hj]

Originally Posted by @Michael

Looking outside the boating/RV world, I see XP Power and Voltec have high current supplies (up to 200A).

Looks like you are on the right track. $1000. I’ll pursue your leads. Thanks

[hbn7hj]

Thanks for the ideas. XP power looks promising. Iota responded suggesting multiple 90 amp chargers and their external lithium IQ4 dongle. I’ll do something in the fall. Traveling now.

[hbn7hj]

Looking for options to keep daily charging time within an hour. Power use keeps growing. Starlink and a future compressor fridge demand a higher charge rate.

[booster]

With Magnum you would get stuck with an inverter/charger which would be not good if you don't need the inverter.


The power supply would certainly look like the best way to go. Be sure that whatever one you find is rated to run at 100% duty cycle if that is how much your batteries would be taking.


Are you going to run this setup manually by just starting the generator and watching voltage?

[folivier]

Are you sure you need that high of a charging rate? And will your batteries accept that high a C rate without causing long term problems?
The reason I ask that is I lived in a 45' Newell with 1000 amps LiFePO4 and the stock 100amp charger/inverter worked fine. Also a 36' Foretravel with 300 amps Battleborns and again the 100 amp charger/inverter worked fine. My daily usage was much higher than a B could ever be.

[booster]

Originally Posted by folivier

Are you sure you need that high of a charging rate? And will your batteries accept that high a C rate without causing long term problems?
The reason I ask that is I lived in a 45' Newell with 1000 amps LiFePO4 and the stock 100amp charger/inverter worked fine. Also a 36' Foretravel with 300 amps Battleborns and again the 100 amp charger/inverter worked fine. My daily usage was much higher than a B could ever be.

I don't want to speak for the OP, but it certainly appears that the goal is reduced generator run time, which is a very common goal.


The only other real option is to use engine charging with a bit alternator and that is stated as not an option.

[hbn7hj]

This just happens to be about a C type RV. My B stays with only 100AH of lithium.

Reduced generator time during extended stay use is the goal. At present I cannot charge lithium batteries from the engine and don’t intend to change that.