How to back up your off grid solar system simple and easy

DIY Back up your off grid solar system with Mean Well power supply to prevent discharging the battery bank below comfortable level. There is a lot of homes with partial of grid solar systems so this would be a perfect solution for those homes.
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Mean Well power supply ebay.us/QjkSBT this is eBay associated link.
After one week of cloudy rainy days using this setup - this works really well on my 12 V system holding the battery bank at 12.95 V without any further monitoring and worrying about discharging the battery bank too low so I incorporated another Mean Well SP-500-24 power supply into my 24 V system and that seams to work very well too so far.
Mean Well SP-500-24 power supply ebay.us/yzH3ti
Off grid living

[@davidpatrick1813]

I will have to watch this a couple of more times to see if I can pick up better. I have a viltron multiples II 12V 3000

[@VladFredK]

What is not clear?

[@davidpatrick1813]

@@VladFredK As to how the overall scheme is and using the charger/pwr supply. Solar only system?

[@VladFredK]

if you have basic knowledge of electric circuits, this should be easy to comprehend

[@etusuku8848]

Good morning. Does the Meanwell give power, if you first connect the battery and then plug the grid? I have a different model Meanwell, it does not go on if I have the battery connected first.

[@VladFredK]

It should not matter what you connect first at least on mine

[@etusuku8848]

Ok, thanks, maybe mine is defective..

[@guywhoknows]

In plain. None waffle...
So you have your battery voltage, you plug in a battery charger from the grid.
The voltage limitations, (13.05) means that the power flows more so the larger the voltage difference.
(Ohms law)
So when the battery reaches 13.05v the current (charge) will stop so your running from the battery, wheb your drops below the set voltage the power supply will charge.
Basically the oower source is the grid. He has losses in conversion going ac to dc to another battery dc to dc and then back to the inverter (ac)
Id you're doing this. There are other ways. You can set v range, and its a ht-603 module (hope I got the right one)
This turns on and off your charger within a range. If you're running all the time from the grid, you wont need this, but then youre Better off turing off your inverter and just using the grid.🎉

[@VladFredK]

You completely missed the point. Ofcorse there are some loses but my solar will use this maybe 3 to 5 times a year only in the winter and the losses are minimal compared saving the $10 000.00 battery bank lifetime plus the Mean Well will shot itself when the voltage raises but the main point is not to have to monitor the solar system.

[@guywhoknows]

@@VladFredK no, you're using the grid via the battery... Just use the grid..
Even when you pass through, you're still on the cycles.

[@VladFredK]

you locking basic knowledge of LiFePo4 battery cells, you are not on the cycle.

[@guywhoknows]

@@VladFredK it has nothing to do with the battery type or size, it's electron flow.
See your saying that you can run your inverter off the DC charger, for the power you need. The DC charger is plugged into AC.
The inverter, that is plugged in to the DC makes AC...
Why, would you do that?
I use 300w of grid power, to make 280w DC charge, then I use that power to make 250w AC power.
You can say my solar adds 50w. So my output is 300w.

[@VladFredK]

@@guywhoknows I don’t get your point