Connecting a 24v Battery Bank to a 12v 1200w Power Jack GT Inverter



I have a 1200 watt Power jack grid tie inverter. It is intended for a 12v wind/{solar lights} setup but it says it needs a minimum of 14 volts and a maximum of 28 volts. My assumption is that a 24 volt battery bank should work just fine but I’m too chicken to hook it up due to that will warning in the back of my mind that I might fry something trying to do this.
This video is really just trying to get 2 things answered:
1. Can I connect a 24v battery bank to a 12v power jack?
2. Can I connect a 12v charge controller to a 24v battery bank for charging?

I contacted the seller on ebay and in very broken english they said I can. I’m still skeptical! Any advice you have is greatly appreciated and thanks for watching!

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{solar lights} & Wind EBooks
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33 Comments on "Connecting a 24v Battery Bank to a 12v 1200w Power Jack GT Inverter"

  1. badphobar says:

    You can't charge half a battery pack in a 24 volt 2xbattery pack or the first batterie to fail causes issues that kill both batteries. You need more voltage than the battery pack provides to charge it.I would just increase the wire size to #10 or #8 for the inverter.

    A breaker or fuse for the battery is always advised.A small system is better at 12volts to use the 12v stuff and easier to charge if a battery goes bad.

  2. mrwmaad says:

    first … yah remove the bike …
    when u need more V ….connect on series … but with inverters u need current .. and to keep your batteries healthy ..less current u take from it … better for battery ..thus why its better to connect them in parallel …with 12 V each …
    

  3. 71homeboy says:

    Go ahead son, hook them f**kers up and don't forget to put the terminals on your tongue to see if there is any juice going through first.

  4. Sir before anything safety come first. Let me answer question number 1: your inverter will take the 24 volt input. Remember that you have 4 12 volt battery. 2 of 4 are in parallel with in series with 2 more. Let me advice you that it's better to have them all in parallel. Because what you really need is Amperage not voltage. Leave it as 12 volt but more amp. Question number 2: if you leave them in parallel all of them than you can charge all if them at the same time.

  5. Please replace your wire to 0 gage or 2. Please add a 200 amp to the positive terminal right before the inverter but at least 2 feet away. At the output if your inverter please add a 30 amp AC breaker.

  6. If you have any question let me know. Make sure also that if you gonna power house appliance such as tv make sure it's a true sine wave inverter. For other thing just get a modified inverter. Thanks

  7. lulu mnl says:

    Hi, I think its a no normal condition, but its a good solution.For example, first a wind turbine charge the bank of batteries, and then only for 1/2h at day inject the current of batteries to grid with a GTI.This is a good idea if you don't want make another paralel electrical installation.

  8. tengo una placa solar de 24 voltios y un regulador de 12 y 24 voltios y una vateria de 12 voltios para encender unas bombillas led de 12 voltios como ago la instalacion de 24 voltios a 12 voltios
    

  9. that inverter MUST be able to monitor the incoming mains supply and shut itself off if the mains fails, so that it cannot backfeed into the power grid when the power goes down and make a isolated line energised. if it doesnt do this, then do NOT use it as if a supposedly dead line is touched by a maintenance worker, they could be seriously injured or killed. 

  10. yeah one power one strength I think ..

  11. ps charge between

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  13. Erderise says:

    the way you are explain yourself is that the batteries are 6v each not 12v. use a bus bar on all for keeping them at 12v with a higher amperage to slow the drain. the charger will work fine.

  14. kricotas says:

    question?
    im going to install a wind turbine 650 watts is for 24v
    but my power inverter is 12v
    shuld i buy a 24 v inverter? or how can i converter the out put 24v to 12v input?

  15. Kricotas, don't put a 12v inverter on that 24v supply. Either get a 24v inverter or you can try a 24v DC to 12v DC step down transformer. 

  16. the power jack I got was bad out of box and I can not get them to fix or replace. I would buy an other brand. I would not buy power jack. buy an other brand if they do not fix bad out of box good luck getting service later. I would not buy power jack and look out sold under other name look and the case and stay a way!

  17. TheCip1977 says:

    Your inverter works beetwen 14-28v , so yes technicaly you can hook up the bateries to the inverter ; in the very next moment when you'll start the inverter the voltage will drop a bit so you won't have 24v anymore but because of the fully charge bateries,  they are able to supply high amperage for a period of time , that amperage , if is sustained for as much as the bateries can , will heat up your inverter and that will cause a very big wear of the inverter and possible to burn it out ( unless you make a REAL GOOD  cooling device for it  because the HEAT is what will actualy  distroy the inverter not the amperage );also you must check before you do this the maximum amp which inverter can manage ; is pointless to charge it as much as it says on its labels so if you install a amp reductor between the bateries and inverter to stay somewhere at 60% of its peak you can do that until you will drain the bateries and won't be any problem  in this way you can go ahead .
    About the second question : yes you can  but  nothing will happen , it won't charge anything 

  18. Elliot Hunt says:

    You cant charge half the bank becuse it would get unbalanced. I guess the inverter would take 24v thogh

  19. you better not tell your power company your not a certified electrician and you done your own work they will come out and you will have to pay a fine  you have to pay a grid connection fee
    and have a pvolic certified electrican and a solor panel installer to do all the work thers a code inforcement law

  20. i found this out when my electric bill was showing a negitive bill all the time so they started estamatting my utility bill

  21. 20 x 300 watt reginna solor panels will produce 28 amps   connecting threw a dueal pole braker and wired directly to your power braker box  and will produse 10.000  kw  hour a day
    i used about 300 kw a hr

  22. the power company police radaided my back yard because they thought i was steeling there electricity

  23. and they posted a stop work order on my front door

  24. and was fixen to take me to  the cleaners threw there judicial system

  25. bad idea wire all parallel leave it 12 volts  hook up 12 volt charger make sure you have right amount of amps or you will burn it up

  26. Okay you are pretty close the batteries are the heart of your solar everything will run on batteries. the charge controller will charge your batteries. if you make a 24v battery bank you will need a 24v charge controller in order to charge 24 volts you will need 130% of 24 volts.

    around 28 volts to charge

    Car batteries not that great for solar tho you will not get much use out of then due to not being able to discharge more then 15-20 times. If the battery has a CCA – Cold Cranking amps dont use it. Y? because they are used for alot of amperage all at once and then to complete a circuit. you want a battery that has a Amp hour rating. most are 75 amps / 180-320 hours

    other than that it looks okay 

  27. with grid tie inverters  we dont need a battery bank  you just use solar panels that connect to your inverter and pluge your inverter into your wall socket

  28. and when the internal switch in the inverter see;s 120 volts  it starts produceing electricity from your solar panels

  29. one other thing to mention that it dosnt effect your 220 volt  side of your electricity so when you use 220  volts your meter will spine in the normal direction also they installed a smart meter on my house and after that my meter wont run backwards
    thats why the electric companys wont you to switch to smart meters they are prepairing for the upcomming battle with people installing solar panels  and not useing there electricity  so were screwed

  30. well if the code enforcement people get there in time before he blows the house up, or the block possibly. He said it himself, he doesnt know what he's doing. Its good that he's at least asking people who do though.

  31. Colnando says:

    Fuck yeah! Thumbs up for being honest bud. Everyone on youtube thinks they are brilliant. I'm about to wire an entire solar/turbine hybrid combo with all new equipment for the first time and I can't afford to have some electrician or expert in the solar field come and do it for me, so yeah … learn on youtube and go do it yourself 😉 If you blow up your cheap Chinese inverter… lesson learned, go buy another cheapo. Looks like your doing fine to me…. but yeah, move that bike out of there…LOL

  32. mr solar says:

    a little help here. look on the back of solar panel you will see on tag it has DC volts open circuit and closed circuit probably 22 volt open and 18 volt closed also note the amps probably 7 DC LIMITED solar amps so you can take the neg wire and pos wire touch them together and there would be no melt down or fire just 7amp of power wasted maybe a little heat . now try that with a battery NOT ADVISED fire maybe blow up because of the UNLIMITED battery amps. so what your unit is doing is taking the max amps heating up and then shutting down to cool off.

  33. mr solar says:

    a little help here. look on the back of solar panel you will see on tag it has DC volts open circuit and closed circuit probably 22 volt open and 18 volt closed also note the amps probably 7 DC LIMITED solar amps so you can take the neg wire and pos wire touch them together and there would be no melt down or fire just 7amp of power wasted maybe a little heat . now try that with a battery NOT ADVISED fire maybe blow up because of the UNLIMITED battery amps. so what your unit is doing is taking the max amps heating up and then shutting down to cool off.


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