Nixx Charging Program; Lixx Charging Program - GRAUPNER SJ ULTRA QUICK 70 Instructions D'utilisation

NiXX-Delta-Peak (-∆ Peak) trigger voltage
charging time
These programs are only suitable for charging and discharging LiFePO
and Lithium-Manganese batteries with a voltage of 3.7 V / cell. The outstanding feature of Lithium batteries is their much higher
capacity compared to other battery types. However, this important advantage is offset by the need to adopt different handling stra-
tegies: they must be charged and discharged using specific methods, otherwise they will be damaged, and can be dangerous. The
directions in these instructions must be observed at all times when handling these batteries. Specific information and safety notes
will also be found in the battery manufacturer's technical information.
The fundamental rule is that Lithium-based batteries may ONLY be charged using special chargers, and the charge program must be set up correctly in
terms of final charge voltage and capacity for the battery type in use. The charge process is fundamentally different to that required for Ni-Cd or Ni-MH
batteries, and is termed a constant current / constant voltage method. The charge current required varies according to the battery capacity, and is set
automatically by the charger. Lithium batteries are usually charged at the 1C rate (1C charge rate = half capacity as charge current. Example: battery
capacity 1500 mAh: 1C charge current = 1500 mA = 1.5 A).
Because some types can be charged with upt to 2C or 4C charging current, the charging current and the capacity of the battery must be set seperately.
When the battery on charge reaches the specific final voltage which is appropriate to the battery type, the charger automatically reduces the charge
current in order to prevent the battery exceeding the final permissible voltage. If the battery manufacturer states a charge current lower than the 1C rate,
then the capacity (charge current) must be reduced accordingly.
WARNING: The set battery type must always agree with the battery to be charged; there must never be a discrepancy - fire hazard and explosion
hazard!
Never connect a battery with integral charge mechanism to the charger. Batteries should always be placed on a non-inflammable surface for charging. If
you wish to charge your LiXX batteries as effectively as possible, the balancer plug must be connected to the charger during the charge process.
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12. NiXX charging program

The automatic charge termination circuit (battery full detection) works on the proven Delta Peak principle (also known
as the Delta-V process), which is already in use in millions of chargers. This process analyses the voltage peak of
the charge curve, which indicates with great accuracy when the maximum charge capacity is reached. When the
charge process is started the battery voltage initially rises continuously, but as the pack approaches full capacity it
begins to heat up. This in turn causes the battery voltage to fall slightly (Delta-V). The charger detects and assesses
the voltage decline.It is possible to adjust the sensitivity, or trigger voltage (in mV per cell!) of the automatic cut-off
circuit. A practical range of values has proved to be 3 ... 20 mV / cell. For most NiMH batteries a value between 5 and
10 mV are found to be ideal, however, RTU batteries must set to 5 mV.

13. LiXX charging program

batteries with a voltage of 3.3 V / Cell and Lithium-Polymer
4
voltage
current
charge time
Manual ULTRA QUICK 70