Bunch Coupe, User Manual

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6. Battery charger
6.1
Product description
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The Li-ion battery charger is a universal charger for Li-ion batteries equipped with advanced high-
frequency capability switching technology.
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The charger is suitable for batteries with a capacity of up to 40 Ah and has a two-stage charging
characteristic: Constant Current (CC) – Constant Voltage (CV) for completely automated charging of
lithium batteries.


The charging parameters are not sensitive to the input voltage. It is suitable for 110 V and 230 V AC,
50-60 Hz.


The charger is protected against short-circuiting, excess voltage, high temperatures and polarity
reversal.
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6.2 Safety instructions

Always connect the charger directly to a power source. Never use an extension cord!

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Do not use the charger for non-rechargeable batteries. These can overheat and burst.
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The charger is made for indoor use. Do not expose the charger to rain or snow.
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
Batteries cannot withstand short-circuiting!

Therefore do not short-circuit the battery. Never create a short-circuit when the charger is connected to the
battery, regardless of whether the utility power is present. If a battery is short-circuited, the battery could
explode! In that case, the charger may also be damaged beyond repair.

Always place the charger in a well-ventilated, dry space.

6.3 Description and operation
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Connect the charger plug directly to the battery or into the bike's cargo box. This will fit in only one way
and will be automatically guided to its position and held there by magnetic forces.
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Check whether your local power supply is suitable for the input voltage of 110 V of 230 V.
Connect the charger to a wall socket.
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LED GREEN confirms power supply or end of charging.
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LED RED confirms that the charger is charging.
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Two-stage charging curve; Stage 1: CC (Constant Current) Stage 2: CV (Constant Voltage)
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The charger has one LED:

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LED red = power on, charging mode
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LED green = battery fully charged / stand-by mode
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LED blinking red = Overvoltage
Short-circuit outlet
Polarity reversal
Overvoltage
Over-timing

When the charger remains connected to the battery after charging, it will
resume charging again as soon as the battery voltage drops below 40 V.