Gavin Stone
Solar Addict
That depends. If you have two 18kpv’s you could run one battery bank to either inverter. Otherwise you’d have to run both to a central bus bar and use them in open loop I’d say.
Paralleling the EG4 PowerPro Wall battery.
- Thread starter FilterGuy
- Start date
ChillnGrill
Solar Enthusiast
I have 1 x 18k and I want to use closed loop. I think Will has his closed loop with the Ruixu rack batteries but not sure how he wired them. Looks like he put them in series but cant be sure.
Will,
The manual says if you connect any other non 280ah lithium battery up to it it voids the warranty. I was thinking about doing the same thing with the server rack batteries I have but not if it voids the warranty.
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Gavin Stone
Solar Addict
They can’t communicate. So there is issues that could arise in those situations. I would either run everything closed loop, or open loop. Not a hybrid of both.
ChillnGrill
Solar Enthusiast
@Will Prowse any input?
Pretty much every 48V battery manufacturer states that somewhere in their warranty. I will always parallel them if each battery string has OCPD and proper size conductor. But that's me. Even though the voltage curve is flat, these batteries will still feed energy proportional to their size. If you connect them in parallel and they don't, there's an issue. Now when it comes to warranty they're all going to say that. I just ignore it.
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I just don't care what the warranty says. If it breaks when it shouldn't, then I'll file a claim. If I'm an idiot and I break the device, then I do not file a claim because it was my fault.
ChillnGrill
Solar Enthusiast
@Will Prowse Is your powerpro and Ruixu closed loop or open loop
Power pro is closed, ruixu is open
SignatureSolarJames
Try Solar, the Grid will always take you back
71.5kWh 
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This is crazy simple - love it
Quattrohead
Solar Wizard
The brochure, website listing and Filterguy postings are causing me confusion.
Batteries come with a set of inverter power cables but no battery parallel power cables now, correct ?
Can you officially connect up to 3 or 5 batteries to a single inverter ? And what will meet code ?
Any reason we cannot stack batteries front to back rather than side to side ?
I would add stack 2 high but that would take some balls !!!
Are Filterguys suggestions correct and fully supported by SS ?
How do we connect the stop switch to the master battery and 2 other batteries plus inverter comms to it ?
Sorry to be pedantic, but small confusions like these have caused big issues for you guys before.
Batteries come with a set of inverter power cables but no battery parallel power cables now, correct ?
Can you officially connect up to 3 or 5 batteries to a single inverter ? And what will meet code ?
Any reason we cannot stack batteries front to back rather than side to side ?
I would add stack 2 high but that would take some balls !!!
Are Filterguys suggestions correct and fully supported by SS ?
How do we connect the stop switch to the master battery and 2 other batteries plus inverter comms to it ?
Sorry to be pedantic, but small confusions like these have caused big issues for you guys before.
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SignatureSolarJames
Try Solar, the Grid will always take you back
correct
3 batts are imminently getting UL9540, 5 are possible without external busbaring
no reason not to
we do have it planned to stack 2 high
Filterguy is always backed on his input
the stop switch connects to the inverter, battery comms do the rest
privatecluck
New Member
Just purchased 2 of the EG4 PowerPro batteries as a bundle with EG4 18kPV, conduit boxes, and cables. Paralleling cables came with only one end having the quick connect - the other end was stripped wire. When I contacted Signature Solar and asked how to parallel my batteries with the cables they sent, their answer was that I needed to purchase quick connects and attached to the stripped end myself. Has anyone else had this issue? If anyone has two or more in parallel, how did you do it?
It's supposed to come with cables with connectors on both ends. They must have missed packaging it
Quattrohead
Solar Wizard
They come with one end stripped to go into the inverter and the parallel cables are an additional purchase add-on. The fact that you were told you had to add your own connectors is scary when the answer is right in front of them. https://signaturesolar.com/eg4-powerpro-battery-paralleling-cables/
privatecluck
New Member
I was communicating with Customer Service. Customer service person checked with the "technicians" (twice apparently) and the answer was the correct cables were sent. Additionally, they indicated that I would have to acquire and install the amphenol connector myself.
privatecluck
New Member
Yes, I agree. Their website shows the paralleling cables as if this is all you need to connect two batteries in parallel. In my opinion, a bit misleading at minimum. This fact was mentioned when I contacted them, but they made no comment about it. My order included two of the paralleling kits.
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Oh darn, I thought it was included. Sorry.
Makes sense though considering the price of the battery and cables. Would increase total cost of battery by $100 if they included them
Makes sense though considering the price of the battery and cables. Would increase total cost of battery by $100 if they included them
Those connectors are not cheap. And the strand count and insulation rating is top notch
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