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Guide · Second-Life & BESS

Second-Life Viability of LFP Prismatic Modules in Stationary Storage

Where retired LFP Prismatic modules work in stationary storage, where they don't, and how the economics compare with refining.

SB

Sarah Brandt

Second-Life Systems Engineer

3 min read Updated 2026-03-21
EV charging hub at night buffered by a battery storage container

The short answer

Excellent — long calendar life makes LFP the preferred feedstock for stationary BESS repurposing. Grade A modules settle near USD 58 per kWh, against a black mass credit of roughly USD 14 per kWh.

On this page4 sections

Key takeaways

  1. 1Second-life fit for LFP Prismatic: Excellent.
  2. 2Grade A modules are worth around USD 58/kWh versus about USD 14/kWh as black mass.
  3. 3Matching modules by impedance, not just capacity, keeps strings ageing evenly.
  4. 4Every repurposed module still ends up at a refiner — plan that route from day one.
01

Is LFP Prismatic a good fit for stationary storage?

Excellent — long calendar life makes LFP the preferred feedstock for stationary BESS repurposing.

Its flat voltage curve makes state-of-charge estimation harder, so a repurposed LFP system needs a BMS that uses coulomb counting and periodic calibration rather than voltage alone.

02

Applications that suit it

Stationary duty is gentler than driving: lower C-rates, shallower cycles and controlled temperature. The best applications play to those conditions.

  • Solar-plus-storage shifting
  • Telecom and data-centre backup
  • EV charging buffers
  • Commercial peak shaving
03

Reuse versus refining: the value gap

For a 60 kWh LFP Prismatic pack weighing about 444 kg, the difference between grading modules for reuse and sending the whole pack to refining can be substantial. Reuse also defers the refining cost rather than removing it.

RouteValue per kWhNotes
Grade A second lifeUSD 58At 100% SOH equivalent, scaled by measured SOH
Black mass creditUSD 14Payable metals after processing charges
Mixed routeWeightedTypical for packs with uneven module health
Indicative value per kWh of original capacity for LFP Prismatic.

Field note

Most packs split: healthy modules go to storage and weak ones to refining. The calculator on this site models that split for a given SOH.
Questions

Frequently asked questions

Can LFP Prismatic modules be reused in home storage?

Yes, graded LFP modules are well suited to home and commercial storage when paired with a new BMS and a proper enclosure.

What warranty do second-life modules carry?

Grade A LFP systems commonly carry multi-year performance warranties; ours is five years.

Turn this into a plan for your packs

Send pack counts, chemistry and approximate state of health. You get an indicative value split, a slotted collection window and pre-filled dangerous goods paperwork.

Run the yield calculator
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