Promax HD RANGER, User Manual

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2.2.5 Usage Tips
The battery is losing storage capacity as you go through its life. Contact your
PROMAX distributor when necessary to replace the battery.
To prolong battery life the user should follow these tips:
Proceed to charge the battery preferentially when fully discharged.
In case of providing a long inactivity period of the equipment is advisable
to store it fully charged at temperatures below 25 ° C.
It is advisable in these cases to make every 3 months a charge / discharge
cycle and a subsequent partial charge (50%).
2-6 August 2012