EV Battery Second-Life Residual Value Calculator

Value EV battery packs for second-life deployments by combining state-of-health, salvage yield, market pricing, and repurposing costs to reveal net recoverable dollars.

Nameplate energy content of the battery pack when new.
Measured usable capacity as a percentage of nameplate at retirement.
Market price buyers pay for repurposed usable capacity.
All-in cost to extract, test, transport, and repurpose the pack.
Defaults to 100%. Accounts for modules rejected during repurposing QA.
Defaults to 0 USD/kWh. Deducts post-sale warranty accruals from the recovered value.

Valuation tool—reconcile against detailed refurbishment business cases and current offtake agreements before recognising revenue.

Examples

  • 82 kWh pack at 78% state of health, $90 per usable kWh, $1,800 repurposing cost, 95% module yield, $5/kWh warranty reserve ⇒ Usable capacity 60.84 kWh, gross value $5,475.60, warranty reserve $304.20, net residual value $3,371.40 ($41.11 per original kWh).
  • 63 kWh pack at 72% state of health, $85 per usable kWh, $1,250 repurposing cost, optional inputs blank ⇒ Usable capacity 45.36 kWh, gross value $3,855.60, warranty reserve $0.00, net residual value $2,605.60 ($41.36 per original kWh).

FAQ

How should I treat packs that require module-level repairs?

Increase the repurposing cost input to reflect labour and component swaps or reduce the module yield percentage if more modules are rejected during inspection.

Can I include potential recycling credit alongside second-life value?

Yes. Estimate recycling proceeds separately and add them to the net residual value if the same entity captures both revenue streams. Document assumptions to avoid double counting.

What drives the second-life price per kWh?

Pricing depends on stationary storage demand, warranty expectations, and competing costs for new LFP modules. Refresh the market price regularly and align it with the warranties you intend to offer.

How do I interpret a negative net residual value?

A negative result indicates repurposing costs and reserves exceed the expected sale price. In that case, recycling or redeploying the pack internally may be preferable.

Additional Information

  • Result unit: U.S. dollars with an additional per-original-kWh figure for asset ledgers.
  • State of health should be derived from capacity tests at the retirement temperature and discharge rate to avoid overstating value.
  • Module yield captures the proportion of modules that pass repurposing QA and are saleable to stationary storage integrators.

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