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Open Roads Forum  >  Technology Corner

 > Charging Li-Ions batteries

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garyhaupt

Penticton, BC..land of wine, sun, retirees....

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Posted: 12/29/20 07:44pm Link  |  Quote  |  Print  |  Notify Moderator

wa8yxm wrote:

Ok if you have a rechargable battery.. ANY Type. what you need is the proper charger.. Not too fast, not too slow.. Proper voltages and so on. And they make chargers for the batteries Some the charge controller is part of the battery Package) https://bioennopower.com/ for example I believe (and I stress that word Believe) makes them that way.. Do not know about battle Born but I believe (Again stress that word) they have a deal with Progressive Dynamics.


Okay..thanks for this....

Gary


I have a Blog..about stuff, some of which is RV'ing.

http://mrgwh.blogspot.ca/

pianotuna

Regina, SK, Canada

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Posted: 12/29/20 07:53pm Link  |  Quote  |  Print  |  Notify Moderator

Hi Gary,

The best bang for the buck I've seen for li is here:

https://ablithium.com/

$400 for a 100 amp-hour unit with bms in place.

But never freeze them up.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, soon to have SiO2 batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

pianotuna

Regina, SK, Canada

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Posted: 12/29/20 08:11pm Link  |  Quote  |  Print  |  Notify Moderator

Gary,

If I were going to do Li I'd be tempted to jump to 48 volts a la 2oldman.

Of course that means getting the following:

a dc 12 to DC 48v boost @ 60 amps for alternator charging

A DC48 to dc 12 buck for operating house loads

a new converter or battery charger for 48 volt

A new inverter with 48 volt input

If staying within the 12 volt parameter then:

a dc12 to DC boosted ~12 for alternator charging to prevent overloading the alternator.

A replacement converter or battery charger that meets the needs of the particular Li batteries.

A way to keep the li from freezing or relying on a heating pad.

garyhaupt

Penticton, BC..land of wine, sun, retirees....

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Posted: 12/30/20 09:13am Link  |  Quote  |  Print  |  Notify Moderator

"A way to keep the li from freezing or relying on a heating pad." and for me..there-in lies the weak spot. I live in BC and right now, as I type it is -3, feels like -10 and has a good bit of overnight snow.

I prefer the KISS way of doing things and having to add a heating element, that must in turn be powered for "2 hours prior to beginning charging" is just trouble looking to happen.

Thanks for your input folks.

Gary

2oldman

NM

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Posted: 12/30/20 10:42am Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

A DC48 to dc 12 buck for operating house loads..
A new inverter with 48 volt input
It's nice to have the 12v house be between 12.7 and 12.9 all the time.

I was replacing 12v inverters about every 4 years, kinda like batteries. This new 48v Outback is built like a tank, heavy, and should be the last one I ever buy.

pianotuna

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Posted: 12/30/20 03:18pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman great choice on the inverter! Is it hybrid as well (i.e. load support) 48 to 120 is easier, too.

2oldman

NM

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Posted: 12/30/20 03:36pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

2oldman great choice on the inverter! Is it hybrid as well (i.e. load support) 48 to 120 is easier, too.
Not to my knowledge is it a hybrid. 3400w. I think inverting from a higher voltage is easier, but, it does take more power to run itself.

StirCrazy

Kamloops, BC, Canada

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Posted: 12/30/20 05:57pm Link  |  Quote  |  Print  |  Notify Moderator

garyhaupt wrote:

"A way to keep the li from freezing or relying on a heating pad." and for me..there-in lies the weak spot. I live in BC and right now, as I type it is -3, feels like -10 and has a good bit of overnight snow.

I prefer the KISS way of doing things and having to add a heating element, that must in turn be powered for "2 hours prior to beginning charging" is just trouble looking to happen.

Thanks for your input folks.

Gary


put them in side the unit where running the furnace in the winter will keep them warm, at 1/3 the weight and 1/2 the size and absolutly no off gassing it should be hard to find a spot.

Steve


2014 F350 6.7 Platinum
2016 Cougar 330RBK

pianotuna

Regina, SK, Canada

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Posted: 12/30/20 06:15pm Link  |  Quote  |  Print  |  Notify Moderator

Steve,

Gary doesn't full time. Therefore heating the batteries during storage may be a serious negative.

pianotuna

Regina, SK, Canada

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Posted: 12/30/20 06:16pm Link  |  Quote  |  Print  |  Notify Moderator

2oldman I can find a 3500 and 3600 watt outback--but no 48 volt 3400 watt.

Is yours an inverter/charger or just inverter?

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