Auxiliary Power Source

I am disabled and have a power chair with two 12 AGM batteries that are in the chairs battery box for a total of 24V. I charge the chair with the charger that came with it that has a three prong plug that goes into the chair the charger box that plugs into the wall. Because of my disability I cannot remove the battery box so therefore I need to charge it if there is a loss of electricity using the set up I use now. Is there anyway I can charge the chair using my set up from an auxiliary power source, such as a solar battery generator or a power inverter? I appreciate anybody's help. Thank you
Comments
There are a number of ways of doing what you want to do.
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
Knowing the size of the battery bank (Amp*Hours), how many AH/WH per day you typically use, and roughly near where you live (get hours of sun).
Also, do you have a south facing location you can mount the solar panels (probably somewhere between 200-500 Watts of solar panels) where they can get full sun from ~9am to ~3pm every day (no shade)?
-Bill
Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
In general, they are not designed for off grid energy usage--More as a short term backup for outages of a few hours.
A good place to start--Get a Kill-a-Watt type meter and measure how much energy you use per day:
https://www.solar-electric.com/kiacpomome.html
Some libraries will loan out Kill-a-Watt meters (just like borrowing a book). Once you know how much energy use you have per day, then you can figure out some alternative solutions and see what works best for you.
A small genset (like a Honda eu900i eu2000i for less than $1,000) is nice and quiet--If you can store a few gallons of gasoline (siphon your car), and run the genset (exhaust fumes do not get into living quarters--I.e., a balcony on an apartment building is not safe for fumes and fuel/fires).
-Bill
Would that work for you? It would recharge itself the next time the power came on.
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I think your spec in MAH is 60 amp hours which makes sense.
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https://www.batterystuff.com/battery-chargers/24-volt/gel-cell/MC24EX.html
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> Yes I saw them also. I did something like this once and as long as it a one time recharge and leave for a safer place with power , these "boxes" are a value. Why don't you list the make of your chair and we can see if there are some specs out on the internet for it's capacity.
> I think your spec in MAH is 60 amp hours which makes sense.
It's a pride gogo
By BRADSTER00 on November 1, 2016
By Inquisitive learner on November 1, 2016
By Amazon Customer on November 1, 2016
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But, I doubt that you use 80%+ of your battery bank energy (i.e., you can drive around for a few days between chargers?).
At the very least, a Kill-a-Watt type meter (in my above post) to figure out how much energy you use per day will make it a lot easier to accurately size a possible solution (and how many days of emergency power do you want, 1, 2, or more days?).
-Bill
https://www.amazon.com/dp/B01I2IDB3O/ref=psdc_348967011_t3_B00P9ONS74
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