Battery Second-Use Repurposing Cost Calculator
NREL's battery second-use (B2U) calculator explores the effects of different repurposing strategies for plug-in electric vehicle (PEV) batteries and associated economic assumptions. The calculator is free to download.
B2U Repurposing Cost Calculator
B2U strategies involve repurposing one single battery: first in an automotive application and then, if appropriate, in a secondary market.
NREL research has revealed the second use of PEV batteries is both viable and valuable. As a result, B2U could become an important part of both the automotive and electricity industries, helping overcome lithium-ion battery cost barriers.
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Last Updated Nov. 17, 2025