7. Information on Batteries and Rechargeable Batteries
Although use of batteries and rechargeable batteries in everyday life is a matter of course today,
there are many dangers and problems. In particular in LiPo batteries with high energy content (as
compared to conventional NiMH batteries), various provisions must be complied with to avoid
danger of explosion and fire.
Therefore, always observe the following information and safety notes in handling of batteries and
rechargeable batteries.
• Keep batteries/rechargeable batteries out of the reach of children.
• Do not leave any batteries/rechargeable batteries lying around openly. There is a risk of batteries being
swallowed by children or pets. If swallowed, consult a doctor immediately!
• Batteries/rechargeable batteries must never be short-circuited, disassembled or thrown into fire. There
is a danger of explosion!
• If you do not use it for any extended period of time (e.g. during storage), remove the batteries/recharge-
able batteries inserted in the transmitter to prevent damage from leaking batteries/rechargeable batter-
ies. Disconnect the driving battery from the speed controller completely and take it out of the vehicle.
• Leaking or damaged batteries/rechargeable batteries can cause chemical burns to skin at contact; there-
fore, use suitable protective gloves.
• Liquids leaking from batteries/rechargeable batteries are chemically highly aggressive. Objects or sur-
faces that come into contact with them may take severe damage. Therefore, keep batteries/recharge-
able batteries in a suitable location.
• Do not recharge any normal, non-rechargeable batteries. There is a risk of fire and explosion! Charge
only rechargeable batteries intended for this; use suitable chargers.
• Observe correct polarity when inserting batteries/rechargeable batteries or connecting the drive batteries
(observe plus/+ and minus/-).
• Never mix batteries and rechargeable batteries! Use batteries or rechargeable batteries, e.g. for the
transmitter.
• Always replace the entire set of batteries or rechargeable batteries in the transmitter. Never mix fully
charged batteries/rechargeable batteries with partially discharged ones. Always use batteries or re-
chargeable batteries of the same type and manufacturer.
• A battery charger corresponding to battery technology (NiMH, LiPo....) is required. Never leave, e.g.,
LiPo batteries unattended in an NiMH charger! There is a risk of fire and explosion!
• A suitable balancer is required for charging multi-cell LiPo batteries (usually integrated in good LiPo
chargers). A balancer (frequently also referred to as an equalizer) prevents overcharging of a single LiPo
cell by inspection of the individual cell voltages.
When overcharging a LiPo cell (max. cell voltage 4.24 V), the LiPo battery may bloat or even catch fire
or explode!
• Only charge intact and undamaged batteries. If the outer isolation of the rechargeable battery or battery
housing is damaged or the battery is deformed or bloated, it must not be charged. In this case, there is
immediate danger of fire and explosion!
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