The concern is how they are discarded. Lithium-ion batteries can cause fires if damaged or mishandled, while lead-acid batteries require careful handling because they contain hazardous materials. Neither belongs in ordinary household rubbish or recycling bins. For installed solar batteries, the US Environmental Protection Agency recommends contacting the manufacturer or installation company about disposal. US EPA
For Highlight Review, the central question could be:
We are investing in solar electricityβbut are we planning for the batteries it will leave behind?




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