ALPENHEAT AJ27RC Manuel D'instructions page 4

Maintenance rules for Li-Ion and Li-Po batteries:
- The fi rst charging process is very important! Please charge the battery
completely before the fi rst use.
- If a battery is discharged below its nominal voltage, this might trigger
further processes, which could damage or destroy the battery.
Therefore, ALPENHEAT batteries have built-in electronics that switch
off the device before such a deep discharge happens.
- Frequent overcharging can permanently damage the battery. That's
why the charger stops the charging process automatically as soon as
the battery is fully charged. Repeatedly re-connecting a charged battery
to the power supply will not increase the charging level!
- Charging should normally only be carried out at room temperature
(about 18°C - 21°C). Avoid charging a cold battery, as this might
damage the cells. Allow the battery to warm up at room temperature in
order to charge it under ideal conditions.
- High temperatures might also damage the battery. Never leave the
battery in the sun or in the car on hot and sunny days.
- Li-Ion batteries and Li-Polymer batteries should ideally be stored at
room temperature.
- Fully charged or empty Li-ion batteries should not be stored for a longer
period of time. In complex tests, the optimum storage condition was
determined at a capacity of 30% to 50% and at a low temperature, but
not below 0 °C.
Storage at -5°C to 45°C (Li-Ion) and at 0°C to 40°C (Li-Polymer) is
possible, but not recommended
- Batteries have to be charged every 6 months.
- Even if not in use batteries lose energy. A Li-Ion battery loses about
3% to 5% per month.
- Always dispose of used and old batteries in an environmentally correct
way.