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Before you begin
Before charging
Please bear in mind the following points before commencing charging:
• Did you select the appropriate program suitable for the type of battery you will be charging?
• Did you set up adequate current for charging or discharging?
• Have you checked the type of battery you are charging, i.e. Li-Po, NiMH, NiCd, Gel?
• Have you checked the battery voltage? Lithium battery packs can be wired in parallel and in
series, i.e. a 2 cell pack can be 3.7V (in parallel) or 7.4V (in series).
• Have you checked that all connections are fi rm and safe? Make sure there are no intermittent
contacts at any point in the circuit.
Batteries information and connection
During charge process, a specifi c quantity of electrical energy is fed into the battery. The charge
quantity is calculated by multiplying charge current by charge time. The maximum permissible
charge current varies depending on the battery type or its performance, and can be found in the
information by the battery manufacturer. Only batteries that are expressly stated to be capable of
quick-charge are allowed to be charged at rates higher than the standard charge current.
Connect the battery to the terminal of the charger: red is positive and black is negative. Due to
the difference between resistance of cable and connector, the charger can not detect resistance
of the battery pack, the essential requirement for the charger to work properly is that the charge
lead should be of adequate conductor cross-section, and high quality connectors which are
normally gold-plated should be fi tted to both ends.
Always refer to the manual by the battery manufacturer pertaining to charging methods, recom-
mended charging current and charging time. Especially, the Lithium battery should be charged
according the charging instruction provided by the manufacturer strictly. Attention should be paid
to the connection of Lithium battery especially.
Do not attempt to disassemble the battery pack arbitrarily. Please be advised that Lithium battery
packs can be wired in parallel and in series. In the parallel connection, the battery’s capacity is
calculated by multiplying single battery’s capacity by the number of cells with the same total
voltage. The voltage’s imbalance may cause fi re or explosion. Lithium battery is recommended to
charge in series.
Important information on discharging
The main purpose of discharging is to clean residual capacity of the battery, or to reduce the
battery’s voltage to a defi ned level. The same attention should be paid to the discharging process
as charging.
The fi nal discharge voltage should be set up correctly to avoid deep discharging. Lithium battery
can not be discharged to lower than the minimum voltage, or it will cause a rapid loss of capacity
or a total failure. Generally, Lithium battery doesn’t need to be discharged. Please pay attention
to the minimum voltage of Lithium battery to protect the battery.
Some rechargeable batteries have a memory effect. If they are partly used and recharged before
the whole charge is accomplished, they remember this and will only use that part of their capac-
ity next time. This is a ‘memory effect’. It is said that NiCd and NiMH batteries are suffering from
memory effect. NiCd has more memory effect than NiMH.
Lithium batteries are recommended to be discharged partially rather than fully discharged.
Frequent full discharging should be avoided if possible. Instead, charge the battery more often or
use a battery of larger capacity. Full capacity cannot be used until it has been subjected to 10 or
