RuiXU battery experiences

Can get them from digikey: https://www.digikey.com/en/products...ZX4AnAJYA7AOYgAvvMIsyIgK5iAMkQDWAAgAKmNdm7ygA

jonas said:

Thanks all helping me to find out what battery connector it uses.
Now if Ruixu support could be this helpful to let me know what it uses instead of just stop answering my emails when asking them.

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Did you try their technical support email or the sales email?

jonas said:

Waiting for them to reply to my request to get cables using AWG 2 instead of 4.

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I was just told in email that they do not have any inventory of 2 AWG cable.

Could anyone that has the batteries take some detailed pictures of the connectors? There are a lot of options, sealed, unsealed, etc.


If the picture shows a part number that would be ideal. I want to make some cables with 2/0 cable that I already have instead of using 4awg for a 100A battery.

jonas said:

As the manufacturer of the cable can’t do AWG 2 then I believe the plug they use is the 5.7mm that can maximum fit AWG 4.

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That is what I figured as well, and it would probably void the warranty to replace them. That really is too small for a battery BMS that can deliver 100A. Short leads of 4awg from the terminal to the bus bar in the rack would probably be okay, but I do not have a rack or bus bars.

xsnrg said:

That is what I figured as well, and it would probably void the warranty to replace them. That really is too small for a battery BMS that can deliver 100A. Short leads of 4awg from the terminal to the bus bar in the rack would probably be okay, but I do not have a rack or bus bars.

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100A (5KW) would probably be ok with #4 in free air, but you'd probably want it to be a short interval. A 100A capable battery is not normally designed to pump 100A sustained output. Most of these units are engineered for 50% duty (50A). You can run them higher, and most quote 150A for a short burst, but ideally they perform better at lower discharge rates.

ksmithaz1 said:

100A (5KW) would probably be ok with #4 in free air, but you'd probably want it to be a short interval. A 100A capable battery is not normally designed to pump 100A sustained output. Most of these units are engineered for 50% duty (50A). You can run them higher, and most quote 150A for a short burst, but ideally they perform better at lower discharge rates.

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While all that is true, engineering things safely doesn't care much about how it operates under normal conditions. You >could< use a 30A breaker on 14 gauge wire too, because normally, it would be just fine, but you and I both know we don't always have control over the load. Unfortunately, that makes it something to work around on an otherwise pretty solid looking battery system. Will know soon, one on order.

xsnrg said:

While all that is true, engineering things safely doesn't care much about how it operates under normal conditions. You >could< use a 30A breaker on 14 gauge wire too, because normally, it would be just fine, but you and I both know we don't always have control over the load. Unfortunately, that makes it something to work around on an otherwise pretty solid looking battery system. Will know soon, one on order.

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No, #14 in free air is only rated to 25A@60F. If you want to run a 30A breaker on 14awg in free air, you need to make sure everything is rated to 75C. 4AWG on the other hand is rated to 105 in free air with lower end connectors. Free air means it's not in a conduit or raceway, so a simple insulated cable from a battery rack to an inverter would be fine with #4 up to 100A, but you may get a noticeable drop in voltage if you run it too far. I'd keep it under 10 feet, and use the fine stranded welding cable unless you are clamping it where it doesn't ever move.

Sizing an inverter is no different than sizing a generator. A 5KW generator can put out 5KW, but if you actually need to draw 5KW for any length of time you probably want something like a 10KW generator. If you actually expect to draw 100A continuously, I would bump it, but neither would I run a 5KW inverter continuously at 5KW, so now I want 10KW and 200A off the batteries, and everything just goes up a notch. Figuring a 'normal' load at ~ 60% if you should be pulling ~60A @ 50V / 3000W. This is actually going to be a little high for the recommended sustained discharge rate on most single rack-mount 5KWH LP4 batteries, but should be fine and not degrade it more quickly.

I absolutely have control of my loads. That is what breakers and fuses are for. I also do not over-provision breakers/fuses. All the 4/0 from my batteries have 300A fuses, (4 conductors 2x2 to the DC bus bars) and the 1/0 from my bus to my two inverters (in pairs) is breaker'd at 150 each because I don't expect more than that to ever pass. If it does then something is happening I am not aware of and safeties need to blow. Also keep in mind a 300A fuse may not blow immediately with a sustained load up to 10% or even more over it's rated ampacity. Same for a breaker, and most can handle very short spikes over 150% of their rating.

Wires / breakers are sized for the expected draw, not the capacity of the source. Try and locate your breaker as close to the source as possible. Just because the battery itself may have a 150A breaker doesn't prevent you from putting a 100 or 80A inline as a sanity/safety check or cut-off point.

jonas said:

Thanks all helping me to find out what battery connector it uses.
Now if Ruixu support could be this helpful to let me know what it uses instead of just stop answering my emails when asking them.

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It's under the NDA...

I made the plunge. I ordered 6 Riuxu server batteries + a server rack. I was trying to decide between EG4 Lifepower and Riuxu. I made the decision when Riuxu lowered the price of each battery to $1199 for their Black Friday sale and free shipping. Total was $7753 for 6 batteries and a server rack. I placed the order Wednesday night. A rep from Riuxu said the trucking company will be picking it up from them on Monday. They are shipping from Southern CA and I am in Las Vegas NV (about 300 miles / 480km). I'll post some pictures when it shows up. I hope it gets here before Thanksgiving so that I have some time off to set it up over the weekend.

im doing the same
following

I was almost going to get the 10-battery rack (with 6 batteries) because I do plan on expanding later on. But considering how tall it would be and the weight of 10 batteries, I decided it would be better to stay with the smaller 6-battery rack. And when I do expand, I will get another 6-battery rack. I can't even imagine what might happen if a rack of 10 batteries tipped over (from a broken wheel, structural defect, or hit by a car in my garage).

Anyway, I got an update on tracking. Apparently Fedex is the carrier. I didn't know Fedex does LTL shipping. They are in possession of the shipment right now. It is 2 large packages on a pallet. Total weight is 925 lbs / 420 kg.

And it's here! First, some photos of how it came. I was very impressed with FedEx. No dents, no holes, no damage at all to the boxes. It's as if it just rolled off the factory floor right into my garage. The packaging for the batteries is really good. It's double boxed with lots of protection on every side.

Next, the unboxed rack. I guess I was too excited to open the boxes for the batteries that I forgot to take some pictures. ?

And now, after several hours, the finished product. I will get some proper sized cables and mount the inverter to the wall later this weekend.
The side panels come off too, but I don't know why anyone would ever want to take them off.

Brucey said:

Are these ok to use in vertical orientation - front face pointing up?

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looks like SolarPowerStore.ca in Canada now has the floor mounts and wall mounts listed..

The are selling the "Beaver" 100Ah rack battery which is identical to the Ruixu... so fitment should be compatible.

Wall: https://solarpowerstore.ca/collections/battery-mapleleaf/products/maple-leaf-wall-mounting-kits
Floor: https://solarpowerstore.ca/products...94871&pr_ref_pid=8198371115223&pr_seq=uniform

JWLV said:

And now, after several hours, the finished product. I will get some proper sized cables and mount the inverter to the wall later this weekend.
The side panels come off too, but I don't know why anyone would ever want to take them off.

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Well, I just put my foot in my own mouth. Why would anyone take off the side panels? When you drop a screw (or a tool) through the conduit hole and it lands inside the server rack. Without front/back doors and removable side panels, you'd have to take out batteries to find the item you dropped.

In Canada here; ordered in late October [20kWh cabinet kit] but the stock was still on its way to the warehouse... I asked yesterday when they expect to ship and they said it already shipped out. I didn't receive notice...

They also don't have any details such as carrier or waybill / tracking number so it's anyone's guess when it will show up. I am not in a rush but would like to be here when it gets delivered so I can flag any shipping damage. With my luck it will show up when I am out of town and the box will be out in the rain till I get back...

They need to improve the order progress communication, at least for Canadian orders.. Sounds like the US warehouse has a good system.

Edit: they sent shipping info shortly after this post

Shipment arrived yesterday on 2 pallets, one with the 6-slot cabinet and one with the 4 battery packs. Shipping in Canada was with Day and Ross transport with final delivery by smaller truck with power liftgate. Boxes looked fine, took about a week from Toronto warehouse to west coast. Have not unpacked yet... Mid December is a great time to commission a solar system up here lol

Finally got pretty much everything set up with the MLPS 6500EX AIO and Solar Assistant. There was a slight hiccup at first since I could not get rid of the "70" fault code when comes were hooked up. It turns out the Voltronic inverters need to be set to LIb protocol and NOT PYL. Ruixu was helpful and have since updated their instructions. Clear sailing now.

At least commissioning on December 21st means it can only get better from this point on.

FY - Current Connected is now selling RUIXU batteries and cabinents

Also Ruixu https://www.ruixubattery.com/
has a sale till December 31, 2023

1.Christmas & New Year Sale,Price 17% Off,ends on 31th,Dec

2.Free shipping on orders over $5,000,48 states only

This is what the Ruixu connectors look like..

CNNT
ES08-P

Don't say amphenol

So my 20kWh stack is connected to a Voltronic 6.5k singlephase unit using the "LI-b" battery-type setting.
It is in a backyard workshop that is not completly done so the gear is idle for the most part with few led lights, a laptop and a SA unit as a draw on top of the inverter standby burn.

The units stated 30% SOC I charged with utility when I first got the stack and charged them slowly up to 100%. Again, not much use over the last few weeks so voltage stayed pretty constant around 51-52 with less than a kWh of solar daily due to temp panel config and winter clouds on the west coast. This morning I noticed the stack voltage was below 50V and dropping fast yet the SOC was still reading 93%.. It just crashed out the inverter when it got to <48V so I started the utility charging again.

How do I re-calibrate the SOC on these Ruixu packs... I am guessing leave to fully charge until the BMS terminates the charge?

Detritalgeo said:

So my 20kWh stack is connected to a Voltronic 6.5k singlephase unit using the "LI-b" battery-type setting.
It is in a backyard workshop that is not completly done so the gear is idle for the most part with few led lights, a laptop and a SA unit as a draw on top of the inverter standby burn.

The units stated 30% SOC I charged with utility when I first got the stack and charged them slowly up to 100%. Again, not much use over the last few weeks so voltage stayed pretty constant around 51-52 with less than a kWh of solar daily due to temp panel config and winter clouds on the west coast. This morning I noticed the stack voltage was below 50V and dropping fast yet the SOC was still reading 93%.. It just crashed out the inverter when it got to <48V so I started the utility charging again.

How do I re-calibrate the SOC on these Ruixu packs... I am guessing leave to fully charge until the BMS terminates the charge?

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With most batteries ( rather bms'es) , soc is calibrated every time a full charge is done.
So easiest would be fully charging your batteries

houseofancients said:

With most batteries ( rather bms'es) , soc is calibrated every time a full charge is done.
So easiest would be fully charging your batteries

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Thats what I was thinking.. maybe the initial charge did not fully complete properly. I will try that again. Very strange it died with 93%