48v Battery Charger

[Bill Ding Homes]

Have a rack of 6 eg4 48v batteries. Any recommendations on a 48v charger for those sunless days

 

[Bill Ding Homes]

Signature Solar is out

 

[OzSolar]

The grid? A generator?

 

[John Frum]

IMHO the inverter/charger pretty much ate the breakfast of the discrete ac2dc charger.
This is an excellent inverter/charger which includes an excellent charger.

Samlex EVO-4248SP 4200W, 48V Split Phase Pure Sine Inverter/Charger | DonRowe.com

The Samlex America EVO-4248SP, 4200 Watt, 48 VDC, 120/240 VAC Split Phase Pure Sine Wave Inverter/Charger with 60 Amp Charger is a rugged inverter/charger designed for back up and off-grid applications

www.donrowe.com

 

[John Frum]

Here is another good option.

https://www.victronenergy.com/upload/documents/Datasheet-Quattro-3-10kVA-120V-EN-.pdf

 

[Casteil]

IMHO the inverter/charger pretty much ate the breakfast of the discrete ac2dc charger.
This is an excellent inverter/charger which includes an excellent charger.

Samlex EVO-4248SP 4200W, 48V Split Phase Pure Sine Inverter/Charger | DonRowe.com

The Samlex America EVO-4248SP, 4200 Watt, 48 VDC, 120/240 VAC Split Phase Pure Sine Wave Inverter/Charger with 60 Amp Charger is a rugged inverter/charger designed for back up and off-grid applications

www.donrowe.com

Yep, especially in the 48V sector - even less common than 12/24V systems seen in automotive & heavy equipment.. and the reason why I went with a hybrid inverter. I didn't have to worry about 3 (or more) separate components to handle what the hybrid inverter can.

 

[Bill Ding Homes]

The grid? A generator?

Sorry, we are off grid. And I have a generator but need a charger to run it to the battery bank. Or maybe I don’t. I’m new

 

[OzSolar]

Sorry, we are off grid. And I have a generator but need a charger to run it to the battery bank. Or maybe I don’t. I’m new

What sort of inverter do you currently have?

 

[Bill Ding Homes]

eg4 6500 ex48v

 

[BenFromSignatureSolar]

eg4 6500 ex48v

You can use your generator as the AC input source to the inverter and charge your batteries that way. I'll see what the lead time is on the 48V charger and let you know. But if you have a rack of 6 batteries, charging through the inverter will be the most efficient course of action.

 

[Bill Ding Homes]

You can use your generator as the AC input source to the inverter and charge your batteries that way. I'll see what the lead time is on the 48V charger and let you know. But if you have a rack of 6 batteries, charging through the inverter will be the most efficient course of action.

Ok, so basically just and extension cord to the ac input of one of the charge controllers? Will it be an issue to only hook 1 of the 2 inverters to the generator

 

[PreppenWolf]

Make sure you alter setting 11 to set the max charge amperage to match the outlet/cord you connect to.

 

[PreppenWolf]

I don't see why there would be any effect by only using one unit other than it limits your max amps possible. Probably irrelevant based on the generator limitation.

 

[Bill Ding Homes]

I don't see why there would be any effect by only using one unit other than it limits your max amps possible. Probably irrelevant based on the generator limitation.

Ok, thank you very much

 

[BenFromSignatureSolar]

An extension cord is not going to be best practice. The generator should run into the AC input of the master inverter after running through subpanel.

 

[Bill Ding Homes]

An extension cord is not going to be best practice. The generator should run into the AC input of the master inverter after running through subpanel.

Could you explain how that would look?

 

[PreppenWolf]

Is this because you want the generator N and G bonds linked? I would think you could hard wire it using a transfer switch as one would normally be installed and just switch?

 

[OzSolar]

eg4 6500 ex48v

How many other people have inverter chargers but think they have inverters only?

 

[BenFromSignatureSolar]

Could you explain how that would look?

When using the grid and/or a generator with multiple inverters, we recommend a subpanel or something that will allow you to overcurrent protect each individual line with breakers. Powering that subpanel with the generator and having breakered connections to each inverter in the system (making sure that all of the Line 1 inverters are on the grid/gen's Line 1, and vice versa) will evenly split the power draws to each line as they have demand for it. Pulling generators over their 50-60% mark can cause the generated sine wave to distorted past 3% harmonic distortion which will damage inverters over time, so you want to make sure that will not happen. It's always advised to have the consultation or supervision of a licensed professional when installing electrical connections.

 

[PreppenWolf]

Ben is saying he doesn't want you to call him with a sob story about how you dont understand the difference between 100% duty cycle capability and surge capability of your generator before you hooked it up to your inverter with no safety device to prevent damage (like a breaker ir a fuse).

If you use a decent transfer switch it will have circuit protection. Don't plan on running your gen at the highest number on the box it came in. That's the surge capacity, not the ideal, clean output and sustainable capacity.