ENERDAN BT-C700 User manual
Battery Charger BT-C700
Operation Instructions
General Information
● The product is intended to charge and discharge NiCad or NiMH rechargeable
batteries. It provides four independent charging slots for AA/AAA rechargeable
batteries.
● The charger can also optimize and test the maximum capacity of rechargeable
batteries. Each charging slot has its own display to show various information, such
as, charging current, battery voltage, charged/discharged capacity, battery internal
resistance and elapsed charging time.
● The charging current can be selected from 200mA to 1000mA. If 4 batteries are
being charged, then the maximum current for each slot will be limited to 700mA. If
there is no battery in slots 2 or 3, then the maximum current in slot 1 and 4 can be
selected up to 1000mA.
● The charger can charge simultaneously batteries of different types and sizes and
with different capacity. It also includes the Minus Delta Voltage (-ΔV) function, which
monitors the voltage over the charging cycle. When a battery is fully charged, the
charger will switch to trickle charging automatically. Therefore the battery will be kept
at its optimum capacity.
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● The charger includes overheat detection to protect rechargeable batteries and
charger itself from overheating. Specially design improved charging circuit provides
excellent heating management during high current charging processes, which
assures the best charging condition for batteries.
● The charger can only be powered with a power supply rated 12v/1.0A.
● Operate and store it only in a dry indoor environment.
● This product fulfills European and German requirements related to electromagnetic
compatibility (EMC).
● CE conformity has been verified and the relevant statements are available upon
request.
● Unauthorized conversion and/or modification of the device are inadmissible because
of safety and approval reasons (CE).
● Any usage other than described in this manual is not permitted and can damage the
product and lead to associated risks such as short-circuit, fire, electric shock, etc.
● Please read the operating instructions thoroughly and keep them for future reference.
● The charger has its backlight turned on after each keypress. Back light will be
switched off after 30 seconds when no key is pressed.
● The maximum charging capacity can be up to 20,000mAH.
Scope of Delivery
● Battery Charger BT-C700 (Image 1) 1 pcs.
● Power Adapter 12V / 1A (Image 2) 1 pcs.
● Operation Instructions 1 pcs.
● Optional: 12V charging cable 1 Pcs.
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Power Supply
● The shipped power adapter is the power supply for this charger.
● In case you need to use other power adapter, please be aware that power supply has
the correct polarity plug. Also please be noted that power supply needs to be able to
supply minimum 1.0A current. Low output power adapter could lead to malfunctions.
● When the charger is powered up, version number will be displayed for 2 seconds.
Then all LCD segments will light up momentarily, and “null” will be shown until any
batteries are inserted (image 3).
Operation
Once a rechargeable battery is inserted, its present voltage (for example: “1.12V”) will be
displayed for 3 seconds, then 400mA default charging current will be shown on display for
another 3 seconds (Image 4)
If MODE or CURRENT button (image 5) is not pressed during these 6 seconds, the
charging process will start. During the first 6 second time, if any button is pressed, the unit
will wait for another 10 seconds, during which you can set up the current slot to the desired
operation mode (see below).
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Once the first battery working mode has been entered (the display stops flashing) the next
battery can be inserted and the desired working mode can be chosen accordingly.
When the previous battery slot setting mode is not yet effective (telling by the flashing
display of that battery slot LCD), and the next battery is being inserted, then both battery slot
displays will be flashing, which means that any setting change will be applied to all
batteries at the same time.
Once normal working mode starts, charging current or working mode can no longer be
changed, until batteries are taken out from the charger and inserted again, or the MODE
button is pressed for longer than 2 seconds.
During normal working mode, pressing the DISPLAY button will toggle display mode
between battery voltage, working current, elapsed time for all slots which are currently in
working progress. Each button pressed will turn on a back light for 30 seconds.
Operation Mode Selection
● Press and hold the MODE button for 2 seconds to start working mode selection for all
four battery slots.
● Press the MODE button subsequently to toggle between the CHARGE,
DISCHARGE, TEST , QUICK TEST and REFRESH modes (Image 6)
● When a particular slot working mode needs to be changed, detach the battery from
the charger and insert it into the slot again, while that selected slot LCD display
content is flashing, press MODE button to choose the desired operation mode.
● When an operation mode is changed, working current adjustment is possible also.
Current Selection
Within the first 6 seconds after inserting the battery or right after power up, press the
CURRENT button to select the desired charging current for slot(s) currently loaded with a
battery/batteries.
Current setting can not be changed once the setting had been confirmed and the
charging/discharging process has begun. If a different working current is required
afterwards, either change the operation mode, or pull out the battery from its slot and insert it
again.
Discharging current is automatically set to predefined charging current.
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Attention: For the batteries in slots 1 and 4 (no batteries in slot 2 or 3 and the display shows
“null” - see image 7) the charging current can be selected up to 1000mA. The charging
current for slots 2 and 3 is limited to a maximum of 700mA.
Display Selection
The DISPLAY button is for toggling between the different display informations: voltage,
current, capacity, work time etc.
Operation Modes and Display
Operation Modes
●CHARGE Mode: The rechargeable battery is charged up to its maximum capacity.
Accumulated charging capacity is displayed at mAh.
●DISCHARGE Mode: This mode is used to reduce the memory effect. The
rechargeable battery is discharged to a preset battery voltage (0.9V). Once the
discharge is finished, the total accumulated discharging capacity will be displayed at
mAh, showing how much energy is discharged from the battery, which is always
referring to the accumulated discharging capacity. No trickle charge current will be
applied after discharge cycle is finished.
●REFRESH Mode: The rechargeable battery is charged and discharged repeatedly to
optimize to its maximum capacity. Old batteries or batteries that have not been used
for a long period of time can be restored to their rated capacity. Depends on the
selected charge current and battery impedance, it can take tens hours or even days
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before complete. Refresh mode will make 3 complete discharging-charging cycles
before complete. After the discharging cycle is complete, the total discharged
capacity will be displayed in mAh. When its current working cycle is in charging state,
the mAh display is always referring to last discharging cycle for its charged capacity.
●TEST mode: This mode checks the present capacity of a rechargeable battery. The
maximum capacity is determined by discharging the rechargeable battery after it was
fully charged. If the maximum capacity is much lower than the rated capacity then the
battery may have reached the end of its lifetime.
●QUICK TEST mode: The charger will analyze the dynamic internal resistance of the
battery by applying a load current and reading it while referring to the voltage drop
detected on the battery. Within 10 seconds, the tested battery resistance will be
displayed in the unit of milliohm
Note that batteries of good quality have a low internal resistance in the range of 20 ~
80 milliohms (image 9).
If the internal resistance is over 500 milliohms, it means these batteries are not
sufficient for supplying power to high current loads, such as digital cameras etc.
However, they can still be used for low energy loads, such as clocks, remote
controllers etc. Always use batteries with more or less similar internal resistance
when they are used in serial to achieve maximum battery life.
Alkaline and other 1.5V batteries can be tested on this charger as well. If a
completely empty battery is to be tested, it is not possible to give any correct reading.
Please note that since the internal battery resistance can be very low, and contact
resistance can be a major influence factor, thus same battery tested in different slot
or even at the same slot with different contact condition, the reading can be varied for
10% to 20%. This is normal.
When a high impedance battery (e.g. over 2500 milliohm) is loaded onto the charger,
due to its high internal impedance, real displayed charging current can be much less
than your pre-selected charging current. When this happens, it doesn’t mean that the
charger is defective. Eventually it needs a longer charging time until fully charged.
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Display
●Charge/Discharge Current: instantaneous current is displayed.
●Time Elapsed: The charging/discharging time of the last cycle is displayed.
●Accumulated Capacity: The accumulated battery capacity is displayed in mAh. For
DISCHARGE mode, it is referring to the accumulated energy discharged from that
battery. For REFRESH mode, previous charging capacity is displayed even when
current working stage is at discharge cycle.
●Battery Voltage: The instantaneous battery voltage is displayed.
● At QUICK TEST mode, it shows the internal battery resistance in milliohm (0.001R)
(see image 9 above).
●Full: After the rechargeable battery is fully charged in any of the operation modes,
trickle charging will start automatically. Trickle charging prevents the rechargeable
batteries from being overcharged and compensates for self-discharging of the
batteries.
Technical Specifications
● Input Voltage: 12V-16VDC
● Power Supply
○ Input: 100-240V-,50/60Hz
○ Output: 12V DC, 1.0A
● Charging Current Range: 200, 300, 400, 500 700, 1000 mA
● Maximal Charging Capacity: 20000 mA
● Operation Temperatures: 0 – 40°C
Maintenance
The device requires no particular maintenance, but should be cleaned occasionally. When
cleaning, the device must be disconnected from any power source. Use dry and soft cloth
only to clean the housing of the charger. Do not use abrasive or solvents.
Disposal
Disposal of waste electrical and electronic equipment
In order to preserve, protect and improve the quality of the environment, protect human
health and utilize natural resources prudently and rationally, the user should return
unserviceable products to relevant facilities in accordance with statutory regulations.
The crossed-out wheeled bin indicates that the product needs to be disposed separately and
not as municipal waste.
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Disposal of used batteries
The user is legally obliged (battery regulation) to return used batteries and rechargeable
batteries. Disposing used batteries in the household waste is strictly prohibited!
Batteries/rechargeable batteries containing hazardous substances are marked with the
crossed-out wheeled bin. The symbol indicates that the product is forbidden to be disposed
via the domestic refuse. The chemical symbols for the respective hazardous substances are
Cd= Cadmium, Hg = Mercury, Pb = Lead. You can return used batteries/rechargeable
batteries free of charge to any collecting point of your local authority.
Safety Instructions
● We do not assume liability for resulting damages to property or personal injury if the
product has been abused in any way or damaged by improper use or failure to
observe these operating instructions. The warranty will then expire!
● The product must not be exposed to substantial mechanical strain or strong
vibrations.
● The product must be protected against electromagnetic fields, static electrical fields,
extreme temperatures, direct sunlight and moisture
● The manufacturer’s instruction for the respective batteries must be observed, before
they are charged.
● The product should not be connected immediately after it has been brought from an
area of cold temperature to an area of warm temperature. Condensed water might
damage or even destroy the product. Wait until the product adapts to the new
ambient temperature before use.
● Sufficient ventilation is essential when operating the charger. Never cover the
ventilating slots of the charger.
● Please take precautions especially when ambient temperature is over 35 degrees
Celsius and charging current rate is over 0.5C. If higher charging current applied, it is
easier to build up temperature on batteries.
● Correct polarity must be observed while inserting the batteries.
● Non-rechargeable batteries, rechargeable alkaline batteries (RAM), lead acid
batteries and lithium batteries must not be charged with this product. There is
danger of explosion!
● Batteries should be removed from the device if it is not used for a long period of time
to avoid damage through leaking. Leaking or damaged batteries might cause acid
burns when in contact with skin, therefore use suitable protective gloves to handle
corrupted batteries.
● Batteries must be kept out of the reach of children. Do not leave the battery lying
around, as there is risk, that children or pets swallow it.
● Batteries must not be dismantled, short-circuited or thrown into fire.
● Never recharge non-rechargeable batteries. There is a risk of explosion!
● Repair works must only be carried out by a specialist/specialist workshop.
● If you have queries about handling the device, which are not answered in this
operating instruction, please check with the distributor for further help.
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Distributor’s Details
ENERpower is a brand of ENERdan GmbH
Max-Planck-Straße 3
D-12489 Berlin
Germany
Email: [email protected]
Tel: +49 - (0)30 – 6392-80400
More Information and products at www.enerpower.de
Distributed by ENERdan GmbH | Max-Planck-Straße 3, D-12489 Berlin, Germany
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