Question: How do I tell if a LiPo pack is unsafe to use?
Answer: To check if a LiPo battery pack is unsafe, start by inspecting it visually. Look for any swelling or puffing of the cells—this is a clear sign the battery is damaged. Also check for any punctures, tears, or corrosion on the outer wrapping. Next, smell the pack; a strange or chemical odour can indicate internal damage. Measure the voltage of each cell using a LiPo-compatible voltmeter; cells significantly below 3.0V or uneven voltages between cells may mean the pack is compromised. When charging, never leave the pack unattended and monitor for excessive heat—if it gets hot to touch (above 50°C), disconnect immediately. Avoid using packs that have been involved in a crash or impact. If you notice any of these signs, it’s safer to retire the pack rather than risk fire or failure. Always store LiPos in a fireproof container and follow proper charging guidelines to extend their life and maintain safety.
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