• Never charge the battery right after use. Always leave the rechargeable batteries to cool off first (at least
5 - 10 minutes).
• Remove the battery from the model for recharging.
• Never place the charger and rechargeable battery on a heat-resistant, inflammable surface.
• Charger and rechargeable batteries heat up when charging. Leave enough distance between the char-
ger and the rechargeable battery, never place the rechargeable battery on the charger. Never cover the
charger and the battery. Do not expose the charger and rechargeable battery to any high/low tempera-
tures or to direct solar radiation.
• Never leave batteries unattended while charging them.
• Regularly recharge the rechargeable batteries (about every 2 - 3 months). Otherwise, self-discharge of
the batteries may cause deep discharge. This renders the rechargeable batteries useless!
NiMH rechargeable batteries (except for specific builds with low self-discharge) lose their energy even
within a few weeks.
LiPo batteries usually retain their energy for several months; however, they are damaged permanently
by deep discharge and cannot be used anymore.
• Never use a too-high charging current. Observe the manufacturer information on ideal or maximum
charging currents.
• Remove the battery from the charger when it is fully charged.
• Charges and rechargeable batteries must not get damp or wet. There is a danger to life from electric
shock; there also is a danger of fire and explosion from the rechargeable battery!
Rechargeable batteries with lithium technology (e.g. LiPo batteries) in particular are very susceptible to
moisture due to the chemicals they contain!
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