PM451 Android 9.0 User Manual
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Safety Information
Battery Charging Guidelines
Charge the battery in a clean, cool, dry, and ventilated environment.
Separate the charger from the battery as soon as possible when the battery is fully charged.
Battery performance can degrade due to the stress of daily charging and discharging. Batteries
typically need to be replaced after 300 to 500 charging cycles (full charge-discharge cycles) or
when the battery capacity has been reduced to 70 ~ 80% of its original capacity. The actual
number of charging cycles varies based on usage patterns, temperature, age, and other factors.
Battery Storage / Disposal Guidelines
Store the batteries in a clean, dry and ventilated environment within ambient temperature ranges
of 20±5
℃
.
For safety regulations, batteries are charged to below 20~30% of full capacity during production.
When not using batteries for a long period, charge the battery for 30 minutes to 1 hour at least
once every 6 months to prevent full discharge and keep the performance.
Batteries should be stored separately when storing for long periods. Disconnect from any
device, charger, or cradle.
Dispose of used batteries promptly according to local disposal regulations.
Do not dispose of the battery in fire. It may cause explosion.
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