New inverter/charger set up

[cvretis]

We have a brand new 2021 22MLE. I want to install 2 Battle Born 100 A Hour batteries and a GP-ISW3000-12 Go Power! Pure Sine Wave Power Inverter - RV Ready - 3000 Watt - 12 Volt. The inverter will be installed in the front pass through near the water and other connections. My plan is to put a 30 A plug on the back of the inverter. When we do not have shore power, I will plug into the inverter and run this to the back electrical input on the RV using our power cord. I do not see needing a transfer switch because we will only be on one 120 V source at a time.

Does anyone see any issues with this?

[openrangeowners]

Getting an inverter/charger allows you to remove your existing converter. With your setup you won’t have that choice because you will not be feeding AC power into the Inverter/charger in order to use it in charger mode (if I understand correctly what you are trying to do).

Hard wiring it is pretty straight forward.

[TucsonJim]

We have a brand new 2021 22MLE. I want to install 2 Battle Born 100 A Hour batteries and a GP-ISW3000-12 Go Power! Pure Sine Wave Power Inverter - RV Ready - 3000 Watt - 12 Volt. The inverter will be installed in the front pass through near the water and other connections. My plan is to put a 30 A plug on the back of the inverter. When we do not have shore power, I will plug into the inverter and run this to the back electrical input on the RV using our power cord. I do not see needing a transfer switch because we will only be on one 120 V source at a time.

Does anyone see any issues with this?

I don't see a problem with it as long as you disable the OEM converter that came with the RV. I ran my rig like this for several years before finally hard wiring it.

Jim

[howson]

We have a brand new 2021 22MLE. I want to install 2 Battle Born 100 A Hour batteries and a GP-ISW3000-12 Go Power! Pure Sine Wave Power Inverter - RV Ready - 3000 Watt - 12 Volt. The inverter will be installed in the front pass through near the water and other connections. My plan is to put a 30 A plug on the back of the inverter. When we do not have shore power, I will plug into the inverter and run this to the back electrical input on the RV using our power cord. I do not see needing a transfer switch because we will only be on one 120 V source at a time.

Does anyone see any issues with this?

Inputs below are meant to help, not be criticism.

First issue is pairing two 100aH batteries with a 3000W inverter. The 100aH Battle Born (BB) battery is capable of a sustained 100amps DC output for 1 hour. This is known as a "1C" rating. Two BBs in parallel means a maximum of 200 amps. (There is a surge capacity above 200 amps, but only for a short time.) What must be realized is the 3000W inverter can produce and sustain up to 25 amps of 120vAC. Using the rule of 10, that means the batteries have to supply 250 amps of 12vDC. See the problem? The batteries won't supply that much current (for very long at surge output) and even though they will surge to that level they will quickly be exhausted.

I have four BBs paired with a Victron 12/3000 for the exact reason outlined in the paragraph above. I learned all of that outlined above from Garrett Towne, lead engineer at AMSolar.

The second issue is not having shore power connected to the inverter. Your BBs will recharge at a phenomenal rate--it would be a shame to not utilize the GoPower's capability when on shore power to recharge the batteries. Without wiring in the GoPower you'll need to swap out the OEM converter with a lithium compatible version if you want to charge the BBs correctly (albeit slowly). Forgive my bluntness, but that doesn't make any sense. My advice is to wire in the GoPower.. Edit: Maybe I misunderstood your post? Perhaps just the output of the GoPower won't be wired to the trailer?

Third, if you have an internal Electrical Management System (like the Progressive EMS-HW50C) I *think* you'll run into an error code due to the neutral and ground not being tied together at the inverter. I'm not an electrician so that's informed speculation based on what I've read from others. OffToHavasu or the other "real" electricians can verify or debunk that notion.

Finally, I'm "just a guy on the internet". I'd urge you to run your plan past a licensed distributor of the GoPower inverter and get their .02. Even if you have to pay a few dollars extra IMHO it is well worth having a knowledgeable person to call. (Exactly why I bought from a licensed distributor of Victron equipment--even though they were far from the least expensive option.)

Good luck.

Howard

[steve&renee]

I don't see a problem with it as long as you disable the OEM converter that came with the RV. I ran my rig like this for several years before finally hard wiring it.

Jim

cvretis

I also ran this way before I hard-wired my system and added solar. As Jim cautioned, it's *extremely* important that you switch off the converter when you are inverting. Not doing so results in a dangerous electrical cycle that -- at the very least -- will kill your batteries. You'd be surprised how easy it is to forget to switch off the converter.

-Steve

[OffToHavasu]

Inputs below are meant to help, not be criticism.

First issue is pairing two 100aH batteries with a 3000W inverter. The 100aH Battle Born (BB) battery is capable of a sustained 100amps DC output for 1 hour. This is known as a "1C" rating. Two BBs in parallel means a maximum of 200 amps. (There is a surge capacity above 200 amps, but only for a short time.) What must be realized is the 3000W inverter can produce and sustain up to 25 amps of 120vAC. Using the rule of 10, that means the batteries have to supply 250 amps of 12vDC. See the problem? The batteries won't supply that much current (for very long at surge output) and even though they will surge to that level they will quickly be exhausted.

I have four BBs paired with a Victron 12/3000 for the exact reason outlined in the paragraph above. I learned all of that outlined above from Garrett Towne, lead engineer at AMSolar.

The second issue is not having shore power connected to the inverter. Your BBs will recharge at a phenomenal rate--it would be a shame to not utilize the GoPower's capability when on shore power to recharge the batteries. Without wiring in the GoPower you'll need to swap out the OEM converter with a lithium compatible version if you want to charge the BBs correctly (albeit slowly). Forgive my bluntness, but that doesn't make any sense. My advice is to wire in the GoPower.. Edit: Maybe I misunderstood your post? Perhaps just the output of the GoPower won't be wired to the trailer?

Third, if you have an internal Electrical Management System (like the Progressive EMS-HW50C) I *think* you'll run into an error code due to the neutral and ground not being tied together at the inverter. I'm not an electrician so that's informed speculation based on what I've read from others. OffToHavasu or the other "real" electricians can verify or debunk that notion.

Finally, I'm "just a guy on the internet". I'd urge you to run your plan past a licensed distributor of the GoPower inverter and get their .02. Even if you have to pay a few dollars extra IMHO it is well worth having a knowledgeable person to call. (Exactly why I bought from a licensed distributor of Victron equipment--even though they were far from the least expensive option.)

Good luck.

Howard

Here's some good info on the GoPower

https://www.youtube.com/watch?v=hyDw...nel=GoPower%21