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Seven Safer Charging Habits for Power Banks and Cordless Devices

Use compatible chargers, firm clear surfaces and damage checks to reduce lithium-ion battery charging risks at home.

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Power banks, cordless vacuums and power tools often use lithium-ion batteries. Follow the maker's instructions. Swelling, unusual odor, extreme heat or hissing can signal failure. These checks do not involve opening or repairing battery packs.

Your try-it-at-home checklist

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1. Check the device instructions and use the charger and cable provided or expressly approved by its manufacturer.
2. Do not charge or use swollen, leaking, crushed, discolored, unusually hot, smelly or hissing batteries or chargers.
3. Charge on a firm, flat, ventilated surface rather than a bed, couch or blanket.
4. Keep devices away from combustible paper, textiles and curtains, and never obstruct doorways or evacuation routes.
5. Avoid direct sunlight and hot cars. Follow the manufacturer's charging-temperature limits in extreme cold or heat.
6. Check charging when practical and end charging as the manual directs. Do not use damaged chargers or improvised extension-cord setups.
7. If smoke, hissing or rapid overheating occurs, do not touch, open or try to repair the battery; evacuate safely and call emergency services. Recycle spent batteries according to local rules.

Your try-it-at-home checklist

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