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, puffing, or bulging of the cells—this is a clear sign the battery is damaged. Next, check for any punctures, tears, or corrosion on the outer wrapping. Smell the battery; a strange or chemical odour can indicate internal damage. Measure the voltage of each cell with a LiPo-compatible voltage checker or a multimeter—cells should be balanced and within 3.0 to 4.2 volts. If any cell reads below 3.0V or above 4.2V, the pack is unsafe. Also, if the pack gets unusually hot during charging or use, stop using it immediately. Never use a battery that has been involved in a crash or has been stored fully discharged for a long time without proper care. When in doubt, dispose of the pack safely at a battery recycling centre. Safety first—damaged LiPos can catch fire or explode.
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