Question 12 - 220-1101 Hardware and Network Troubleshooting Practice Test for the CompTIA A+ Core Series Exam

A customer has come to you for help with his mobile phone battery. Earlier in the day, the customer noticed that the back of the device was bulging out and opened the case to find that the battery was swollen. What can cause batteries to swell?

no cellular signal
firmware issue
not fully charged
overheating

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