Bantam BC8HP Operations Instructions download pdf (Page 5)

STATION

Please bear in mind of checking the following point before charge operation.

- Did you select the appropriate program, which are suitable for the type of battery?

- Did you set up adequate current for charging or discharging?

- Lithium battery pack can be composed with parallel and series circuits mixed. You have to check

the composition of the battery pack carefully before charging.

- Are all connections firm and safe, or is there an intermittent contact at any point in the circuit?

Charging

A specific quantity of electrical energy is fed into the battery during charge process. The charge

quantity is calculated by multiplying charge current by charge time. The maximum permissible charge

current varies according to the battery type or its performance, and can be found in the information

provided by the battery manufacturer. It is only allowed to charge batteries at rates higher than the

standard charge current if they are expressly stated to be capable of quick-charge.

- Connect the battery to charge to output terminal of the charger using suitable charge lead. They are

red, positive(+) and black, negative(-). Since the charger may not detect the difference between the

internal resistance of the battery pack, cable resistance and connectors 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 manufacturer 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 same. That kind of voltage imbalance causes

a fire or explosion during charge process. We recommend you compose the Lithium battery pack in

series only.

Discharging

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-discharged, set the final discharge

voltage correctly. Lithium batteries should not be deep-discharged 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 warnings and safety notes are particularly important. Please follow the

instructions for a maximum safety; 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.

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Bantam BC8HP Operations Instructions Page 5

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