lead. They are red, positive (+) and black, negative (-). Since the charger cannot detect
the difference between the internal resistances of the battery pack, cable resistance
and connector transfer resistance, the first requirement if the charger to work properly
is that the charge lead should be of adequate conductor cross-section. And also high-
quality connectors (normally gold-contact type) must be fitted to both ends.
Refer to the information provided by the battery manufacture regarding charging
methods, and verify the recommended charge current and charge time. Especially for
Lithium batteries, you have to follow the charge instruction provided by the
manufacturer strictly.
Do not attempt to disassemble the battery pack arbitrarily.
You have to pay attention to verify the capacity and the voltage of the Lithium battery
pack. It may be composed of parallel and series connection mixed. In parallel link the
capacity of the battery pack is multiplied by the number of cells but the voltage remains
the same. That kind of voltage imbalance causes a fire or explosion during charge
process. We recommend you compose the Lithium batter pack in series only.
Discharge
The typical purpose of discharge is to determine the residual capacity of the battery, or
to lower the voltage of battery to a defined level. When you discharge the battery you
also have to pay attention on the process same as charging. To avoid the battery
becoming deep-charged, set the final discharge voltage correctly. Lithium batteries
should not be deep-charged to lower than the minimum voltage, as this leads to a rapid
loss of capacity or a total failure. Generally, you do not need to discharge Lithium
battery voluntarily.
Some rechargeable batteries are said to have a memory effect. If they are partly used
and recharged before the whole charge is drawn out, they remember this and next
time will only use that part of their capacity. This is a memory effect NiCd and NiMH
batteries are said to suffer from memory effect. They prefer complete cycles; fully
charge then use until empty, do not recharge before storage-allow them to self-
discharge during storage. NiMH batteries have less memory effect than NiCd.
The Lithium battery prefers a partial rather than a full discharge. Frequent full
discharges should be avoided if possible. Instead, charge the battery more often or use
a larger battery.
The brand-new NiCd battery pack is partially useful with its capacity until it has been
subjected to 10 or more charge cycles in any case. The cyclic process of charge and
discharge will lead to optimize the capacity of battery pack.
Those warning and safely notes are particularly important.
Please follow the instructions for a maximum safely; otherwise
the charger and the battery can be damaged violently. And also
it can cause a fire to injure a human body or to lose the property.
06
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