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A power station that sat fully charged in a cold garage all winter is one of the most common ways owners shorten their unit’s actual usable lifespan, and it happens from a couple of specific mistakes that are easy to avoid once you know them.
Never store it at 100% or fully drained
Lithium batteries, including LiFePO4 chemistry, degrade fastest when stored at full charge for extended periods, and deep-discharged storage risks the battery management system shutting the unit down permanently if it drains further during storage. Most manufacturers recommend storing at roughly 40-60% charge for anything longer than a few weeks of downtime.
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Cold temperatures alone won’t damage a stored unit, but charging cold will
A power station sitting unused in a cold garage or shed at freezing temperatures is generally fine. Plugging it in to charge while the internal cells are still cold, however, can cause real damage to lithium cells — bring it to room temperature for a few hours before charging if it’s been stored somewhere cold.
Check charge level monthly, not just once in fall
Power stations slowly self-discharge even sitting unused, and a unit stored at 50% in October can drift low enough by February to risk the deep-discharge problem above. A quick monthly check and top-up back to the 40-60% range takes two minutes and prevents a genuinely expensive mistake.
Keep it dry, not just covered
Humidity swings in an unheated shed or garage cause condensation to form inside vents and ports as temperatures cycle. A few silica gel packs in the storage bag or case absorb that moisture before it becomes a corrosion problem on the terminals.
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A power station stored correctly over winter should perform identically in spring to how it performed the fall before. One stored at full charge in a cold, damp shed for five months often shows a real capacity drop by the time hunting season or camping trips start back up.
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