and at 300 - 600 charging cycles, they have to reckon with a drop in performance of only
approx. 20%.
With a non-optimal charger, the capacity is significantly reduced with every charge/discharge
and thus also the service life. Storage at too high or too low temperatures may cause a
gradual reduction in capacity.
General warnings - Avoid dangers!
Do not burn batteries. Never immerse the cells in liquids. Keep batteries / cells out of the reach of
children. Never disassemble LiPo batteries. Disassembling a battery may cause internal short
circuits. Gas generation, fire and explosion or other problems can be the result. The electrolytes
and electrolyte vapours contained in the LiPo batteries are harmful to health. Avoid in any case
direct contact with electrolytes. If electrolytes come into contact with skin, eyes or other parts of the
body, rinse immediately with plenty of fresh water and seek medical advice.
Remove all batteries not required in the model. Always charge batteries in time. Store batteries on
a non-flammable, heat-resistant and non-conductive base! Fully discharged Li-Po batteries are
defective and must not be used again! If the battery is out of service, disconnect it from all loads
such as speed controllers, as they always consume a little power even if they are switched off.
Otherwise the battery could be destroyed by deep discharge.
Special instructions for charging LiPo batteries
Since we cannot monitor the correct charging and discharging of the cells, any warranty is
excluded due to faulty charging or discharging. Only approved chargers with balancer may be
used for charging Li-Po batteries. The maximum charging capacity must be limited to 1.05-times
the battery capacity. Example: 700 mAh battery = 735 mAh max. charging capacity. Make sure
that the number of cells and the discharge end voltage are set correctly. Observe the operating
instructions of your charger/discharger. The battery to be charged must be placed on a non-
flammable, heat-resistant and non-conductive base during the charging process! When
charging, keep all combustible or highly flammable objects away. Batteries may only be charged
and discharged under supervision. In principle, LiPo batteries connected in series may only be
charged together in the pack if the voltage of the individual cells does not differ by more than 0.1
V from each other. If the deviation in the voltage of the individual cells is greater than 0.1 V, the
cell voltage must be adjusted as precisely as possible by individual cell charging or discharge.
Under these conditions, LiPo batteries with max. 1 C charging current may be charged. The
indication 1 C charge current in mA corresponds to the capacity in mAh; i. e. 200 mA for a 200
mAh battery. Avoid a voltage of more than 4.2 V per cell in any case, as this will permanently
damage the cell and may cause fire. In order to avoid overcharging of individual cells in the
pack, the cut-off voltage should be set to values between 3.1 V - 3.15 V per cell for a longer
service life. You can also charge batteries with a lower voltage for safety and longer service life.
After each charging process, check that one of the cells in the pack has a voltage of more than
4.2V. All cells must have the same voltage. If the voltage of the individual cells deviates from
each other by more than 0.1 V, the cell voltage must be equalized by individual cell loading or
single cell discharge. In order to avoid overloading the cells after prolonged use in packs, they
should be charged individually on a regular basis. Never charge the battery cells with incorrect
polarity. If the batteries are charged with reversed polarity, there are abnormal chemical reactions
and the battery becomes unusable. This can cause fractures, smoke and flames.
ROCONTROL programming card
