= Solution
\b[This is a primary cell and should not be treated as rechargeable.] Discharge converts the fluorinated-carbon <electrode> into <carbon> and <lithium> fluoride. It does not simply insert <lithium> into a host that can be reversibly deintercalated. Reversing <electric current> does not cleanly reconstruct the original distributed C–F bonding and <electrode> microstructure.
Insulating LiF, loss of the original reaction interfaces and unwanted <electrolyte> reactions obstruct reversibility. Replating <lithium> can also produce an irregular metallic deposit and internal shorting. A thermodynamically possible formal reverse reaction is therefore not evidence of a practical rechargeable cell.
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