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New Pytes V5 48V Server Rack Battery

4thdSolar

4thdSolar

New Member
Joined
Feb 17, 2022
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3
I recently received the new Pytes V5 48V Battery and have had it running in our shop for the last month. The build quality is very impressive. It appears to have redundant BMS's. It is also heated. It communicated out of the box with the Victron Cerbo GX. When I get some time I will see if I can get it to talk to my SMA Sunny Islands. I really like how the batteries are restrained in an aluminum extrusion and that the BMS leads are all printed circuits. Cabling is minimal as they do use a solid copper busbar. 10 year warranty. Just thought some of you might want to see this battery.

Quick stats from the data sheet:
Chemistry LFP
Nominal Voltage 51.2V
Voltage Range 44.8V-57.6V
Nominal Capacity 100Ah
Nominal Energy 5.12kWh
Unit Dimension L19 in*W20.9 in*H5.5 in(3.2U)
Unit Weight 97lb
Standard Charge/Discharge 75A
Maximum Continuous Charge/Discharge 100A
Peak Charge/Discharge 150A(15s)
Round-Trip Efficiency ≥95%
Communication Protocol CAN/RS485/RS232
Cycle Life ≥6000cycles
Calendar Life ≥10years
Operating Temperature 14°F~131°F
Connect style Parallel
Heating system 14.4~18°F/h

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How much was it? Looks like it could be used vertically (panel up)? Nice clean internals.
 
We purchased it for a special price to evaluate it. I think that MSRP will be right around $2,100. Pytes said it could be used vertically or Horizontally. They also said that they are CATL cells.
 
Looking at their brochure now. Does look very nice. CATL cells are nice upgrade. Looks like you can pick your own color too?
 
Pytes is advertising $200 off per battery through October 31. Is this battery currently available from stock? Also this battery is not on the CEC battery list? If it is UL approved, and 9540a compliant, will it be added to the CEC website and when?
 
4thdSolar said:
I recently received the new Pytes V5 48V Battery and have had it running in our shop for the last month. The build quality is very impressive. It appears to have redundant BMS's. It is also heated. It communicated out of the box with the Victron Cerbo GX. When I get some time I will see if I can get it to talk to my SMA Sunny Islands. I really like how the batteries are restrained in an aluminum extrusion and that the BMS leads are all printed circuits. Cabling is minimal as they do use a solid copper busbar. 10 year warranty. Just thought some of you might want to see this battery.

Quick stats from the data sheet:
Chemistry LFP
Nominal Voltage 51.2V
Voltage Range 44.8V-57.6V
Nominal Capacity 100Ah
Nominal Energy 5.12kWh
Unit Dimension L19 in*W20.9 in*H5.5 in(3.2U)
Unit Weight 97lb
Standard Charge/Discharge 75A
Maximum Continuous Charge/Discharge 100A
Peak Charge/Discharge 150A(15s)
Round-Trip Efficiency ≥95%
Communication Protocol CAN/RS485/RS232
Cycle Life ≥6000cycles
Calendar Life ≥10years
Operating Temperature 14°F~131°F
Connect style Parallel
Heating system 14.4~18°F/h

View attachment 166816
Click to expand...
I would love some more followup on this. I was going to get the original Pytes battery, but I may as well wait for these, or pre-order at a good price.
 
I have heard from a reliable source that the V5º has received UL9540 certification with at least the Sol-Ark 8k, 12k and 15k; see the following certification for more details:
www.sgsgroup.cz

Electrical Products Certified Clients

www.sgsgroup.cz www.sgsgroup.cz

I haven't reached out to Pytes yet to get the documents that show that the "Pi S15K" is a Sol-Ark 15k + V5º battery, but the certificate is only dated November 6th so perhaps they haven't posted it anywhere yet. I also haven't yet come across the UL9540A certification yet.
 
You can easily find the Pytes Ebox battery, UL9540a with all the bells and whistles and easy firmware updates for significantly lower prices than the newer model. The new model may be nicer, but the version "C" of the Ebox (6 dip switches) now supports up to 16 batteries in parallel without the expansion box. If you are following latest codes, then the limit is 20 kW (4 batts together), then separated by 3 feet of space between these 20 kW packs. On 8 batteries, you can save about $4,000 vs. the new V5 battery. Shop around.
 
The two big factors for me with the newer model (V5°) are: 1C discharge (100A) vs 0.5C on the older model, and a built-in heater. Up here in ??, the heater is important and the 1C discharge might be depending on how my local inspector treats the local code.

(In short: you’re only allowed 20kWh of batteries in one spot; for the older model if that’s 4x 5.12kWh batteries @ 50A, fine; if that’s 3x then that’s only ~7.5kW of power, not enough for our place, and I’d need a V5. Depends on whether he believes 20.48kWh is over the limit)
 
andrew-d said:
The two big factors for me with the newer model (V5°) are: 1C discharge (100A) vs 0.5C on the older model, and a built-in heater. Up here in ??, the heater is important and the 1C discharge might be depending on how my local inspector treats the local code.

(In short: you’re only allowed 20kWh of batteries in one spot; for the older model if that’s 4x 5.12kWh batteries @ 50A, fine; if that’s 3x then that’s only ~7.5kW of power, not enough for our place, and I’d need a V5. Depends on whether he believes 20.48kWh is over the limit)
Click to expand...
My first interest is the higher 100 A discharge. Four E box batteries only gives me 10 KW. I want to utilize the full 12 KW capability of the Sol-Ark. The heater is just insurance for me. The batteries will be in an attached garage with the only external wall being the garage door wall. I don't think I've ever seen it colder than 47F (8C). A couple of online stores are selling the V5 at $1750 USD.
 
Oldphile said:
My first interest is the higher 100 A discharge. Four E box batteries only gives me 10 KW. I want to utilize the full 12 KW capability of the Sol-Ark. The heater is just insurance for me. The batteries will be in an attached garage with the only external wall being the garage door wall. I don't think I've ever seen it colder than 47F (8C). A couple of online stores are selling the V5 at $1750 USD.
Click to expand...
Yeah, the 100A discharge is definitely priority #1 for me. I could always put some heating mats, build an insulated box, etc. around the batteries, so the heaters are definitely a "nice-to-have"... but the 100A discharge is essential (along with being UL9540 so my inspector will accept it...)
 
I just received my four Pytes V5 batteries. The battery posts are M6 bolts. Does anybody have 2/0 cables with 1/4" battery lugs?
 
Please check the following to see if it applies to the new Pytes V5:

The Ebox 48100R batteries come with a 2 AWG battery cable. The instructions from Pytes say that only 2 batteries should be connected in parallel, then a single +/- connected to a buss bar.

So if you have 4 batteries in a single stack, there would be 2 pairs in parallel with the cables going to the buss bar. The buss bar would need to be 200 amps for 4 batteries. Then you would need 2/0 cables to the inverter for a short length or 3/0 for say over 6 feet.

The link above seems to indicate that the cable being sold is epdm insulated welding cable. Multiple fine strands. May or may not be to code in your area. If you are going to have your cables in a conduit, then you should go for THHN insulated 2/0 or 3/0 finely stranded wire. this is mean to be put into conduit, not for automotive use like in a diesel truck or laying on the floor of a welding shop.
 
The UL version is the right stuff and can go into conduits. I bought the same class wire from a different company, but price was essentially the same. In my case, I used 3/0 and did the crimps myself. But I have all of the tools to cut and crimp and heat shrink so it was no big deal. One thing I think may be important is depending on the inverter connection, some inverters have the battery cable attached via lugs while others just have the stripped wire inserted into a clamped screw down connection. If that is the case, it may be helpful to use a big wire ferrule on the screw clamp type. I didn't do this and it took extra time to get the connections properly done.
 
Does anyone know if the v5 would fit in their existing 2 or 4 unit enclosures? (Their "R-box" or "R-box OC")

Never mind. I found the answer. Yes, their enclosures support the V5. That fact is buried underneath lots of glamour shots of smiling people using electricity. :)
 
Last edited:
joer said:
Does anyone know if the v5 would fit in their existing 2 or 4 unit enclosures? (Their "R-box" or "R-box OC")

Never mind. I found the answer. Yes, their enclosures support the V5. That fact is buried underneath lots of glamour shots of smiling people using electricity. :)
Click to expand...
Are you sure? What web site? There's a V-Box-IC and a V-Box-OC. Why have these additional boxes if the R-Box will take them?
 
Oldphile said:
Are you sure? What web site? There's a V-Box-IC and a V-Box-OC. Why have these additional boxes if the R-Box will take them?
Click to expand...
Agree. The dimensions of the V5 and the older model E-48100R are different. I think the V5 is taller, and the E-48100 is deeper.
 
I decided to install the Ebox and not wait for the V5. I saved a lot of money, the warranty is the same and the batteries are locked up in a cabinet anyways out of sight. And installed in a closed locked cabinet attached to a system inverter whose application displays to me everything about the battery BMS anyways. So given the same price, great, but saving a few thousand dollars, I went dollar because i still need another 60 kW for the house to achieve the state of nirvana between me and my utility company. Maybe the next 60 kW ill be V5. Overall, I am happy with Pytes workmanship and documentation.
 
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