sunjoe iON100V-10PS-CT Manuel D'utilisation page 6

6. During periods of heavy use, the battery pack will become
warm. Allow the battery pack to cool to room temperature
before inserting it into the charger to recharge.
7. Do not overcharge batteries. Do not exceed the maximum
charging times. These charging times only apply to
discharged batteries. Frequent insertion of a charged or
partially charged battery pack will result in overcharging
and cell damage. Do not leave batteries in the charger for
days on end.
8. Never use or charge batteries if you suspect that it has
been more than 12 months since the last time they
were charged. There is a high probability that the
battery pack has already suffered dangerous damage
(exhaustive discharge).
9. Charging batteries at a temperature below 50°F (10°C) will
cause chemical damage to the cells and may cause a fire.
10. Do not use batteries that have been exposed to heat
during the charging process, as the battery cells may have
suffered dangerous damage.
11. Do not use batteries that have suffered curvature or
deformation during the charging process or those that
exhibit other atypical symptoms (gassing, hissing,
cracking, etc.)
12. Never fully discharge the battery pack (maximum
recommended depth of discharge is 80%). A complete
discharge of the battery pack will lead to premature aging
of the battery cells.
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