2
GB | Universal Battery Charger
Specifications
• charging current:
• 1–4× (AA/AAA/C/D)
1.4 V
1 000 mA
• 5–6× (AA/AAA)
1.4 V
600 mA
• 1–2× 9 V
9.0 V
30 mA
maintenance current***: 50 mA ±10 %
end charging method***:
1. ∆ V detection
2. safety timer: 10 hours
number of charging channels: 6
battery technology: NiMH/NiCd
for battery sizes: AA, AAA, C, D, 9 V
operating temperature: 0 °C ~ 25 °C
storage temperature: -25 °C ~ 60 °C
power supply: 100~240 V AC, 50/60 Hz; 390 mA
weight: 540 g
size: 18.0 × 15.9 × 5.6 cm
Charger Functions
Detection of Faulty Batteries
The charger is equipped with detection of faulty or non-rechargeable batteries. In case of insertion of
incorrect cells or reversing the polarity, the LED indicator will be flashing red.
Restoration mode***
In case highly depleted/undercharged cells are inserted, the charger features a special mode which
alternately charges and measures the batteries to determine whether the batteries can or cannot be
recharged. The LED indicator will be flashing red and green in turns.
Preparation Mode***
If the batteries are significantly drained, it is advised to not charge them immediately with a strong
current. That is why batteries first undergo preparation mode. The entire system is controlled by a
microprocessor. The preparation mode is indicated by the LED flashing green.
Main Charging Mode***
Pulse charging shall be begin after completing the preparation mode or at sufficient battery voltage
(<1.3 V). Pulse charging is significantly faster and less harmful for the batteries. A pulse charger can
be used to charge rechargeable batteries at a relatively high charging current without damaging or
destroying the rechargeable battery cell, since the current impulse is very quick. Recharge time depends
on the capacity and condition of the recharging battery. The charger monitors the status of the cell during
the process; the charger measures the voltage on the cell before the charging pulse, memorises the
value and compares voltages after the charging pulse. Based on the comparison, the charger evaluates
whether the charging cell is fully recharged or whether charging should continue. The entire system is
controlled by a microprocessor. The charging mode is indicated by the LED glowing red.
Maintenance Mode***
After full charging of the cell, the charger automatically switches to maintenance mode. The cells will
be charged by approximately 1/20th of the charging current. Batteries can remain in this mode for an
arbitrary amount of time without suffering from overcharge. The batteries can be removed and used
at any time. The maintenance mode is indicated by the LED glowing green.