PRECAUTIONS FOR BATTERY PACK OPERATION
OPERATION OF THE BATTERY PACK 
Charge the battery pack fully before using it for the first time.
When the surrounding temperature is high, the battery pack may sometimes be unusable due to activation of protection circuitry.
When the portable DVD player is used with the battery pack and has no disc or stops for about 10 minutes with power on, it will turn off automatically. (Auto power off)The battery pack and the portable DVD player become hot during use. This is not malfunction.
When the battery pack is not to be used for a long period, be sure to remove it from the portable DVD player. If the battery pack is left attached, continual flow of weak current renders it over discharged and eventually unusable even when you try to charge it later.
If the portable DVD player is switched on while the battery pack is not fully charged, the operation may sometimes be unstable. Be sure to charge the battery pack fully before use.
STORAGE 
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The battery pack should be stored under a surrounding temperature from 15 to 25 C. Avoid storing it under extremely low temperature, in a place with high temperature and high humidity or in a place subject to soot, etc.
When the battery pack is stored for a long period, at least once a year it is recommended to discharge it fully on the portable DVD player, recharge it fully again and store it.
SERVICE LIFE AND DISPOSAL 
When the charging time or available operation time becomes extremely short, the battery may reach the end of its life. The battery pack can be used for about 300 cycles of recharging and operations.
To dispose of a used battery pack, wrap a piece of tape around the terminal section and treat it in compliance with your local regulations.
Caution:
Danger of explosion may appear if battery is incorrectly replaced.
Replace only with the same or equivalent type.