48V battery bank to 12V inverter

[Ace6879]

I want to have a 48V battery bank that can power a 12V inverter. Can I use a 48V DC to 12V DC converter for this?

 

[cs1234]

I want to have a 48V battery bank that can power a 12V inverter. Can I use a 48V DC to 12V DC converter for this?

You could, but you would probably need a few of them, or a really hefty one depending on the size of the 12v inverter and the load you want to run on it.

 

[Ace6879]

I’d probably get a 3000W inverter but most likely would only power things that total 1500-2000W. What kind of specs should I be looking for with a DC-DC converter for this?

 

[SparkyJJO]

Why do you want a 48V bank and a 12V inverter?

 

[ShirBlackspots]

I want to have a 48V battery bank that can power a 12V inverter. Can I use a 48V DC to 12V DC converter for this?

Yes, that's what you do.

 

[Ace6879]

I like the inverter I currently have and my charge controller is capable of 5200W of solar but only with a 48V system

 

[Ace6879]

Yes, that's what you do.

Any idea on where I can find a nice heavy duty one?

 

[BatteryBuff]

Please remember that the DC-DC converter must be capable of any surge currents the inverter will try to supply to the loads. Also, there will be an efficiency loss of ~10% for the DC-DC converter and another loss of ~10% to ~15% for the inverter. 48V pure sine inverters are around the same price as 12V inverters.

 

[ShirBlackspots]

Any idea on where I can find a nice heavy duty one?

Victron sells one, limited to 400W.

Here's one I've had in my Amazon wish list for a while: https://www.amazon.com/dp/B08THF63MQ/ (50A, 600W)

Here's a 60A, 720W 48V to 12V DC-DC converter: https://www.amazon.com/dp/B0B4W2JCSD/

Here's a 100A, 1200W 48V to 12V DC-DC converter: https://www.amazon.com/dp/B0C81BSX53/

 

[cs1234]

I’d probably get a 3000W inverter but most likely would only power things that total 1500-2000W. What kind of specs should I be looking for with a DC-DC converter for this?

Divide the wattage you want to run (plus conversion/inverter overhead of say 20%) by 12v.

2000w + 400w = 2400w. 2400w / 12 = 200amps.

You would need to supply somewhere around 200amps (not exactly, because you would probably be supplying closer to 13.8-14v to your 12v inverter..) of 12v dc power to your 12v inverter.

You are better off buying a 48v inverter, it would likely cost less and be less complicated.

Alternatively, get a 48v to 12v dc to dc charger and charge some 12v batteries to use with the 12v inverter. You could get by with a smaller dc to dc charger that way, assuming your average loads are lower than your charge rate. I'm assuming you already have some 12v batteries.. unless you are using them in series to make 48v.

 

[BatteryBuff]

I’d probably get a 3000W inverter but most likely would only power things that total 1500-2000W. What kind of specs should I be looking for with a DC-DC converter for this?

Why not purchase a 3000W 48V pure sine inverter like this?

Amazon.com

 

[sunshine_eggo]

I want to have a 48V battery bank that can power a 12V inverter. Can I use a 48V DC to 12V DC converter for this?

Why?

 

[Ace6879]

Please remember that the DC-DC converter must be capable of any surge currents the inverter will try to supply to the loads. Also, there will be an efficiency loss of ~10% for the DC-DC converter and another loss of ~10% to ~15% for the inverter. 48V pure sine inverters are around the same price as 12V inverters.

Any 48v inverters that you could recommend that don’t have GFCI? I had to disable mine since Renogy already has the ground bonded within the unit.

 

[sunshine_eggo]

Any 48v inverters that you could recommend that don’t have GFCI? I had to disable mine since Renogy already has the ground bonded within the unit.

Shouldn't matter. Their outputs need to be isolated.

 

[time2roll]

Probably need a 12v battery to feed the 12v inverter if the inverter must be 12v for some unknown reason.
then get a 48-12 battery charger to top up the 12v battery.

 

[ShirBlackspots]

Why not purchase a 3000W 48V pure sine inverter like this?

Amazon.com

I have the 2500W version. It works very well.

 

[sunshine_eggo]

I have the 2500W version. It works very well.

24V/2000W for me. Zero complaints.

 

[cs1234]

I have the 2500W version. It works very well.

And the best part is pronouncing the name of it when you tell people about it!

 

[sunshine_eggo]

And the best part is pronouncing the name of it when you tell people about it!

Reliable!!!!

 

[cs1234]

Check out what one of the WZRELB inverters has on it.. A spark proof nut, that's actually pretty nice for when you first hook it up if you don't ever use any breakers / switches you flip off for long periods of time.

 

[ShirBlackspots]

And the best part is pronouncing the name of it when you tell people about it!

I just say Reliable Electric, because that's its name. (YueQing Reliable Electric)

 

[cs1234]

I just say Reliable Electric, because that's its name. (YueQing Reliable Electric)

For some reason they don't have WZRELB as the product brand name on that one. I meant pronouncing WZRELB would be a challenge. Anybody can pronounce YueQing..

 

[SparkyJJO]

I like the inverter I currently have and my charge controller is capable of 5200W of solar but only with a 48V system

I thought you said you'd get an inverter, which sounds like you don't already have one.

 

[Ace6879]

I thought you said you'd get an inverter, which sounds like you don't already have one.

I have one but I am upgrading slowly

 

[OkieRVer]

Magnum makes a 2800w 48 to 12 converter