[SELL] 2 complete 50kWhr 2nd life with 30kW Inverter, and 5 more battery systems needing inverters


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decook1110

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Jan 12, 2025
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We have 2 complete and 5 cabinet only systems with 96 modules in each cabinet. Each module contains Moli-Cell IHR18650A cells in 53P2S configuration. Located in Southern California near Los Angeles. Two complete cabinets have 30kW 480 3 phase inverters. Partial cabinets need wiring and and inverters added. Support for fiber optic BMS system is available. Another 400 kWhr of these modules is available.

Battery System 1.jpg
 

Attachments

  • IHR18650A Energy Cell, BMW Mini.pdf
    81.7 KB · Views: 194
  • 53P2S Module_PDF.pdf
    51 KB · Views: 105
How much? At least a ballpark figure as negotiations can be done afterwards via DMs.
 
I'm asking $5 per module, their name plate ratings were .71kWhr per module, so its under $7 per kWhr with the balancing circuits (LOM see attached) installed on each module. For the complete cabinets with 96 modules, BMS communication boards and inverters I'm asking $600 and the incomplete cabinets with 96 modules $450.

The key person in the BMS board design is collaborating on this project so the BMS communication boards and some support is available. We've got over 800kWhr of these floating around and will be putting at least 250 kWhr of these as expansion into an existing switcher locomotive project. We're selling the excess because a commercial energy storage project with these has become impractical with all the newer UL requirements for grid tied projects.

I've designed and will be implementing 36 and 48 volts packs for use on our 36 VDC forklift and possible inverter tie in for off-grid. I'm more than happy to give away the design details and my collaborator is willing to economically support the BMS boards if multiple people are using them. If there is a DIY community in the US southwest using these, it would be a cheap way to bulk up on energy storage.

Don't let the fiber optics turn you off, its old school simple serial. The cable in rolls is readily available and inexpensive and once you use the right disposable cutter and get them set up and tested, they are pretty solid. I wouldn't recommend selling forklift systems due to commercial issues with vibration and warranty support, but they were pretty trouble free when used in the cars, and we've had no issues so far in our limited forklift and locomotive use.

If there is interest I could prepare some documents explaining the 48V (7 module serial strings in parallel or 'x'P7S ) and 36V [ 'x'P5S ] packs I've designed.
 

Attachments

  • EV Grid LOM Spec.pdf
    277.2 KB · Views: 93
  • EV Grid BMS Specs.pdf
    66.3 KB · Views: 133
  • EV Grid Battery Module Spec.pdf
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How Old are these cells in these modules? ( the only thing I could find on them was a datasheet dated 2011)

Are the modules in post #3 made with different cells than the molicel IHR18650A cells linked in first post?

Who makes the inverters?

What are the dimensions of the cabinets?

Someone might want just the cabinets.
later floyd
 

Attachments

  • Screenshot 2025-03-27 at 10.50.52 AM.png
    Screenshot 2025-03-27 at 10.50.52 AM.png
    99.1 KB · Views: 104
Good catch, I meant to note that the module documentation was for the next generation of this module LOM combination that used 154 cells instead of 106.

These cells were used in an EV program from 2010 thru 2011, they were all removed in 2013 and have been in storage since. Some cycle testing on them was done in 2018 and they did much better in a 34C box than the 2nd life Nissan Leaf cells we compared them with before we started putting them into the locomotive. These are a great example of second life EV batteries, no gaurantee of how many years you will get from them, but they are 10% the cost of new.

My quotes for recycling are coming in, right now the best quote is $0.45/pound or $5.58 per module. I'm really tired of throwing 'still useful' things away, but the excess has to go over the next 6 weeks so we can reclaim the warehouse space.

The inverters were originally made by Ideal Power, they are now manufactured by Stabiliti. I've attached the original data sheet and also the new data sheet for Stabiliti. The Stabiliti comes in the two port version like the Ideal Power unit and also a 3 port version that allows you to connect both the batteries and solar panels. New the inverters are around $10k. They were working when the system was removed at the end of a 2 year demonstration grant.

The two complete cabinets are 48 inches wide, 57 inches tall, and 26 inches deep. The newer 5 cabinets are around 6 inches taller to make it easier to get the battery shelves in and out. Newer cabinets went away from the hinged doors and just had two panels that screwed on.
 

Attachments

  • IBC-30kW-480_datasheet_Feb2013.pdf
    1.5 MB · Views: 116
  • 1_Datasheet - Stabiliti 30C3 - EN - v1.0.pdf
    247.9 KB · Views: 100
These cabinets and modules are still available. I'm starting to drain the cells and ship them to a recycling center. Anyone interested in these who can pick them up in Fullerton CA, please let me know. I get $4.50 per 0.7 kWhr module from the recyclers, its a shame to recycle 800kWhr's of these when they would make a great DIY battery systems for several people. In 6 weeks I need them out of my shop...
 
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