5
z
Overheat detection to protect rechargeable batteries from over-charging
z
Minus delta voltage (-dV) detection for charge termination
z
Damaged batteries detection
z
Discharge mode (first discharging and then charging) to remove memory effect of
rechargeable batteries
z
Refreshing old rechargeable batteries by discharging/ charging cycles
z
Test function to check the capacities of rechargeable batteries
z
Different Charging/ Discharging functions can be launched independently and
simultaneously to each rechargeable battery in the compartments
z
Various display modes during charging/ discharging – the charging current (in mA),
time elapsed (in hh:mm), the terminal voltage (in V) and accumulated capacities (in
mAh or Ah)
FUNCTION KEYS:
There are three easy-to-use function keys and four number keys in the charging unit:
6
Compartment Number key
Press and release the Number key to select a particular battery compartment for charge
modes and/or display mode adjustment.
MODE key
The mode key shall first be pressed and held for about 5 seconds to activate the mode
change. The subsequent pressing of the mode key will enable to toggle between the
“Charge”, “Discharge”, “Test” and “Refresh” mode. To change the operating mode for an
individual rechargeable battery, first press corresponding NUMBER key then press the
MODE key.
Compartment
Number keys
DISPLAY key
MODE key
CURRENT key
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DISPLAY key
Press and release to select the displays of the charging current (in mA), time elapsed (in
hh:mm), the terminal voltage (in V) and accumulated capacities (in mAh or Ah) during the
charging or discharging process.
To change the display content of a particular rechargeable battery, first press corresponding
NUMBER key then press the DISPLAY key.
CURRENT key
Press to select the amount of current to be applied (within the first 8 seconds after batteries
are inserted) in different operating modes (also see “
Start charging the rechargeable
batteries
” below).
OPERATING MODES OF THE CHARGING UNIT
This powerful charging unit provides the following operating modes:
a.
Charge up the rechargeable battery
(CHARGE)
– to charge up the rechargeable
battery, automatically switch to trickle charge after rechargeable battery is full.
b.
Discharge then charge up the rechargeable battery
(DISCHARGE)
– to discharge the
rechargeable battery then charge it for minimizing the memory effect.
c.
Refresh the rechargeable battery
(REFRESH)
– to refresh the rechargeable battery to
its maximum capacity by charging and discharging the rechargeable battery
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repeatedly until no further increase in the capacity is estimated. For old rechargeable
batteries or those have not been used for a long times, refreshing may bring the
rechargeable battery back to the optimum condition.
d.
Check the rechargeable battery capacity in mAh/ Ah
(TEST)
CHARGE MODE
Charging at 200 mA is the default-operating mode of the charging unit. User may select a
charging current of 200, 500 or 700 mA.
The estimated time of charging by various charging current is tabulated in Table 1.
Table 1. Charging Time with various charging current
Size of battery Battery Capacity Charging current selected (mA) Estimated charging time
700
~3 hr 35 min
500 ~5
hr
AA 2500
mAh
200 ~13
hr
700 ~60
min
500 ~84
min
AAA 700
mAh
200
~3 hr 30 min
