Installing or replacing the backup battery ZR80, ZR85, and ZR90
The backup battery (lithium button battery CR1616) allows the camcorder to retain date, time and other camcorder settings while the power source is disconnected. Connect a power source to the camcorder when replacing the backup battery to retain the settings.
- Open the backup battery cover.
- Insert the backup battery with the + side facing outward.
- Close the cover.
WARNING!
- The battery used in this device may present a fire or chemical burn hazard if mistreated. Do not recharge, disassemble, heat above 212 °F (100 °C) or incinerate the battery.
- Replace the battery with a CR1616 made by Panasonic, Hitachi Maxell, Sony, Toshiba, Varta or Renata. Use of other batteries may present a risk of fire or explosion.
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- Do not pick up the battery using tweezers or other metal tools as this will cause a short circuit.
- Wipe the battery with a clean dry cloth to ensure proper contact.
- Keep the battery out of reach of children. If it is swallowed, seek medical assistance immediately. The battery case may break and the battery fluids may damage stomach and intestines.
- Do not disassemble, heat or immerse the battery in water to avoid the risk of explosion.
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The backup battery has a life span of about a year. 
flashes in red to inform you that it needs to be replaced.
