The operating voltage range is the safe voltage window for a LiFePO4 battery pack, from 2. Staying within this range (10V–14. For instance, charging above 3. 7V can reduce a pack's capacity over.
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Normal: Discharge to 10–30% SoC for interim storage; 0–10% before compliant ground/sea shipment, if packaging permits. Suspect: Supervised discharge to ≤10%. Stop immediately if surface temperature rises > 10 °C above ambient, if odor appears, or if a cell swells.
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You're more likely to deal with uneven self-discharge that will take the batteries out of balance while in storage, and you'll need to jack with them before putting them back into service. If you really want to discharge, a standard 120VAC 60W Incandescent or halogen light.
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A typical 5kW solar + storage system in Niamey ranges between $8,000-$15,000. Why the variation? Pro Tip: Battery type accounts for 40-60% of total system costs. This report is available at no cost from NREL at www.
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