A Chi-comm 48V @ 400AH LFP - Cheap

Discussion about pairing third-party batteries with OutBack equipment
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raysun
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A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

Screenshot_20231031_091716_Chrome.jpg
This has got to be about the cheapest LFP battery on the market. Free shipping in continental U.S. to boot.
16 12V@100AH blocks to create a 48V@400AH battery.
I wonder how it would hold up?
raysun
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Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

Screenshot_20231031_093626_Chrome.jpg
Undoubtedly the same battery.
The Electron
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by The Electron »

What is the scene lately for Large(as possible) amp hour batteries? I see the OB whitelist is old, getting more requests for making the switch from lead acid- what's out there these days?
raysun
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My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

If I was looking, I'd look onto Pytes server rack batteries.
https://www.solar-electric.com/pytes-e- ... ttery.html
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Mike Curran
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My RE system: Outback - Garage roof (2007/2017):
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- 6 (2×3) ALEO S79-300's into one FM80 (2017)
- 2 grid-tied VFXR3524A-01's series stacked, replaced GVFX's (2020)
- 12 Surrette/Rolls 2V x 1766Ah (2007)
- Hub10.3, Mate3s, FNDC, RTS. Tigo ES maximizers on each PV module.

Westinghouse Solar - Barn roof: (2012)
- 24 (2x12) 235W Lightways panels with Enphase M215 microinverters plus 6 - 275W Talesun panels, also with M215s, grid-tied

Outback Skybox - Barn roof: (2019)
- 14 Trina Solar 270W in series (DC array input to SB inverter/charger), currently awaiting installation (2/19/24)
- 3 SimpliPhi 3.8 batteries, 48V, 225Ah total
- AC coupled input from 14 Talesun 275W (manually switched during outages), Enphase M215 microinverters

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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by Mike Curran »

raysun wrote: Mon Feb 05, 2024 11:38 am If I was looking, I'd look onto Pytes server rack batteries.
https://www.solar-electric.com/pytes-e- ... ttery.html
I need 24V batteries, seems Simpliphi is still my best option, although Rolls has some too. Any other suggestions for a 24V LFP replacement for my FLAs?
https://ei.tigoenergy.com/p/pZXn7SZQyO45
https://enlighten.enphaseenergy.com/public/systems/Hctc107221
As of 8/25/23 Westinghouse array down to 21 panels, Skybox DC array out of commission.
raysun
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My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
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Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

Mike Curran wrote: Mon Feb 05, 2024 12:26 pm
raysun wrote: Mon Feb 05, 2024 11:38 am If I was looking, I'd look onto Pytes server rack batteries.
https://www.solar-electric.com/pytes-e- ... ttery.html
I need 24V batteries, seems Simpliphi is still my best option, although Rolls has some too. Any other suggestions for a 24V LFP replacement for my FLAs?
SimpliPhi is still an option. Is the 3.8-48M twice as good as the flood of Chinese "server rack' batteries on the market, as Phis are basically twice as expensive? The jury is out on that one.
The Electron
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by The Electron »

Poked around the last few hours and went with 8 Full River sealed lead acid L-16's @400 AH for $5,112 for a client (they pay supplier, no markup). Trying to go for US made as I can. --- I think sodium will take off in 10 years
raysun
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My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

The Electron wrote: Mon Feb 05, 2024 1:01 pm Poked around the last few hours and went with 8 Full River sealed lead acid L-16's @400 AH for $5,112 for a client (they pay supplier, no markup). Trying to go for US made as I can. --- I think sodium will take off in 10 years
A 400AH 51V Pytes (4 unit) server rack battery would be $7000. Still more expensive than SLA, but the gap is narrowing.
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by fcwlp »

The Electron wrote: Mon Feb 05, 2024 1:01 pm Poked around the last few hours and went with 8 Full River sealed lead acid L-16's @400 AH for $5,112 for a client (they pay supplier, no markup).
raysun wrote: Mon Feb 05, 2024 2:04 pm A 400AH 51V Pytes (4 unit) server rack battery would be $7000. Still more expensive than SLA, but the gap is narrowing.
But the 400AH Pytes (4 batteries) will give you 360AH of usable capacity vs 200AH for the SLA/AGM. Three Pytes (300 AH) will be about the same price as the SLA/AGM option and will still provide more AH at 270AH.
.
I am currently in the process of quoting the replacement of ~6,300 lbs (2,300 AH @ 48V) of VRLA/AGM batteries that are seven years old. Pytes guarantees for 10 years and quotes 6,000 cycles to 90% DOD. Plus, we only need to move ~1,200 lbs of new batteries.
raysun
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My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

Pytes guarantees for 10 years and quotes 6,000 cycles to 90% DOD.
I'm in the midst of finding out the guarantees on batteries, LFP batteries in particular, are not as straight-forward as the marketing material claims.
:shock:
The Electron
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by The Electron »

https://www.solar-electric.com/fortress ... ttery.html this is more along the size i need. And agreed Raysun!
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by The Electron »

FCWLP - double those lead acid amp hours- you calculated only 4 L16's. If it was that clo$e, lead would be dead!
raysun
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My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
Off-Grid

Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

The Electron wrote: Mon Feb 05, 2024 3:42 pm https://www.solar-electric.com/fortress ... ttery.html this is more along the size i need. And agreed Raysun!
40 months ago, I paid $14.4k for 22kWH.
The Electron
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by The Electron »

Yes indeed, the gap in narrowing. You paid 650 bucks per kWH, this beast above runs $513
raysun
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My RE system: Flexpower Two: (2) FXR3048A-01 - Series Stacked, (2) FM80, MATE3s, FlexNetDC
6 SimpliPhi 3.8-48 (48v @ 75AH. 450AH total)
Outback IBR3 battery enclosure
REC Alpha 440W panels - 2 arrays: each of 4 strings of 2 in series
2 Midnite Solar MNPV6 combiners w/20A DC disconnects.
Honda EU7000is gas fuel generator
Off-Grid

Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by raysun »

The Electron wrote: Mon Feb 05, 2024 5:23 pm Yes indeed, the gap in narrowing. You paid 650 bucks per kWH, this beast above runs $513
Yep.
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by fcwlp »

The Electron wrote: Mon Feb 05, 2024 4:04 pm FCWLP - double those lead acid amp hours- you calculated only 4 L16's. If it was that clo$e, lead would be dead!
I am comparing usable capacity. I am familiar with the Fullriver DC400-6 400AH AGMs (actually have four good used ones that were seldom cycled in inventory). At 50% DOD the DC400-6 has 200AH of usable capacity assuming you have a 48V system and 8 in series. Per Full River's data at 50% DOD they have an estimated life of 750 cycles or maybe 3 years for my typical customer. I will stick with Pytes LFP with 6,000 cycles at 90% DOD.
.
I find it hard to justify AGMs in any solar application where there is cycling as lifetime is too short and cost is too high relative to alternatives.
.
I recently replaced a 48V 1,100AH GB Industrial FLA battery bank. I compared cost of Pytes LFP to high quality FLA batteries from Trojan and Rolls Surrette. The Pytes was within +/- 5% of the FLA but the FLA had lead times of 6-weeks to 6-months whereas I could go to NAZ and pick up the batteries the same day (actually got them the next week when I was going to Flagstaff anyway).
.
LEAD IS DEAD or at LEAST DYING
The Electron
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Re: A Chi-comm 48V @ 400AH LFP - Cheap

Post by The Electron »

Gotchas, yeah this application is 24V. That site is a getaway cabin, lived in 10% of the time yearly, and historically I've made lead last 12 years (I'm on my third owner with this site:) -- But I hear ya! Tysm for the facts and figures!
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