User manual
Version 01/10
Charger BTL12, including 12 V Adapter
Item no. 20 01 12
Intended Use1.
The product is intended to charge and discharge NiCd or NiMH rechargeable batteries. It provides twelve
independent charging channels for up to ten AA/ AAA rechargeable batteries and two 9V-block batteries. The
charger can charge batteries of different type and size and with different capacity at the same time.
The charger integrates the minus delta voltage (-ΔV) function, which monitors the voltage over the charging
cycle. When the rechargeable battery is fully charged, the charger will start a trickle charging automatically, to
keep the battery at its optimum capacity level.
If the charging process runs for 15 hours, the charging process will automatically switch to trickle charging.
The charger can be powered from 12 V cigarette lighter outlet or from 100-240 V~ / 50 or 60Hz mains socket.
It is only authorized to be operated in dry environment, such as indoors or inside vehicles. Do not expose it
to moisture.
Unauthorised conversion and/or modication of the device are inadmissible because of safety and approval
reasons (CE). Any usage other than described above is not permitted and can damage the product and lead to
associated risks such as short-circuit, re, electric shock, etc. Please read the operating instructions thoroughly
and keep them for further reference.
Delivery contents2.
Charger BTL12•
Power adapter•
Cigarette lighter adapter•
Operating instructions•
Safety instructions3.
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 icon with exclamation mark indicates important information in the operating
instructions. Carefully read the whole operating instructions before operating the device,
otherwise there is risk of danger.
Product safety3.1
The product must not be exposed to substantial mechanical strain or strong vibrations.•
The product must be protected against electromagnetic elds, static electrical elds, extreme temperatures, •
direct sunlight and moisture.
The manufacturer’s instructions 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 destroy the product. Wait until the
product adapts to the new ambient temperature before use.
Sufcient ventilation is essential when operating the charger. Never cover the ventilating slot of the •
housing.
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!
Rechargeable batteries must not be inserted/ removed during charging.•
Battery safety3.2
Correct polarity must be observed while inserting the batteries.•
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 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 re. Never recharge non-rechargeable •
batteries. There is a risk of explosion!
Miscellaneous3.3
The product and batteries are not a toy and should be kept out of reach of children and pets!•
Servicing, adjustment or repair works must only be carried out by a specialist/ specialist workshop.•
If any questions arise that are not answered in this operating instruction, contact our Technical Advisory •
Service or other experts.
Operating elements4.
Discharge
1
3
4
5
6
2
1 Status LEDs 4 Power receptacle
2 Battery compartment for 9V-block battery 5 Positive terminals for AA/ AAA batteries
3 “Discharge” button 6 Negative terminals for AA/ AAA batteries
Operation5.
Power Supply5.1
Select the desired power supply, either through a 100 - 240 V~ mains socket or a cigarette-lighter outlet.1.
Through 100-240 V~ mains outlet:a.
Plug the power adapter to a mains socket. The red LED on the power adapter will light up. -
Through cigarette lighter outlet:b.
Insert the cigarette lighter adapter to a cigarette lighter outlet. (metal tip = positive; side metal -
contacts = negative)
The red LED on the cigarette lighter plug will light up. -
Connect the low voltage plug to the power receptacle (4) of charger.2.
Fuse replacement for the cigarette lighter plug5.1.1
If the red LED of the cigarette lighter plug does not light up after being inserted into cigarette lighter outlet,
replace its fuse.
Unplug the cigarette lighter plug from the cigarette lighter outlet and disconnect it from the charger.1.
Turn the plastic tip of the cigarette lighter plug counterclockwise to open the fuse compartment.2.
Replace the defective fuse with a new one of the same type (please refer to “Technical Data”).3.
Close the fuse compartment.4.
Charging5.2
If the charger detects a damaged or non-rechargeable battery, the charge mode will not start. The
red LED will blink until you remove the damaged battery.
Insert the rechargeable batteries to be charged into the charging compartments while observing the correct
polarity. So that the positive pole of the rechargeable battery connects to the positive terminal and the negative
pole to the negative terminal. (“+” = positive; “–” = negative). Do not insert the rechargeable battery by force.
The charging process will start automatically once the battery is inserted properly.
The rechargeable batteries are not required to be inserted simultaneously since the charging processes are
independent from each other.
The status LED (1) above the respective charging slot will turn red to indicate that the battery is charging.
Trickle charging5.3
Once the battery has been fully charged, trickle charging will start automatically.
The status LED (1) above the respective charging slot will light up in green.
The trickle charge function prevents the rechargeable batteries from being overcharged and compensates for
self-discharging of the rechargeable batteries. Each rechargeable battery will be individually charged up to its
maximum capacity.
Discharging5.4
The charger integrates the discharge function.
Press and hold the “Discharge” button (3) for 2 seconds, to change the operating mode for each inserted
battery. The batteries which were being charged are now discharging and those batteries that were being
discharged are now charging. The status LED (1) above the respective charging slot will ash in red and green
successively to indicate which battery is discharging.
After a battery is discharged to the preset level, the charging process will start automatically.
It is possible to discharge and charge different rechargeable battery at the same time.
Insert the rechargeable batteries to be discharged to the battery compartment rst and then start discharging.
Afterward insert the rechargeable batteries to be charged into vacant battery slots.
In order to avoid the memory effect, it is recommended to discharge NiCd rechargeable batteries
before charging.
Charging time5.5
Determine the battery type and its capacity. Calculated the charging time by the following equation:
Charging time =
Battery capacity
x 1.4
Charging current
For example,
Charging a 2500mAh AA rechargeable battery would take:
Charging time =
2500mAh
x 1.4 = 14 hours
250 mA
These operating instructions are published by Conrad Electronic SE,
Klaus-Conrad-Straße 1, D-92240 Hirschau/Germany.
The operating instructions reect the current technical specications at time of print.
We reserve the right to change the technical or physical specications.
© 2009 by Conrad Electronic SE.
*02_01/10_02-HL
Disposal6.
Dispose of waste electrical and electronic equipment6.1
In order to preserve, protect and improve the quality of environment, protect human health and
utilise natural resources prudently and rationally, the user should return unserviceable product to
relevant facilities in accordance with statutory regulations.
The crossed-out wheeled bin indicates the product needs to be disposed separately and not as
municipal waste.
Used batteries/ rechargeable batteries disposal6.2
The user is legally obliged (battery regulation) to return used batteries and rechargeable batteries.
Disposing used batteries in the household waste is 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, our stores or where batteries/ rechargeable batteries are sold.
Consequently you comply with your legal obligations and contribute to environmental protection!
Technical data7.
Operating voltage: 12 V
Charging current: 250 mA (AA/ AAA rechargeable battery)
30 mA (9V-block battery)
Trickle charging current: 25 mA (AA/ AAA rechargeable battery)
3 mA (9V-block battery)
Power adapter: Input: 100 - 240 V~, 60/50 Hz
Output: 12 V , 1500 mA,
Fuse (Cigarette lighter plug): 250 V, 3A (fast blow)
Operating temperature: 0 to 35 ºC
Operating humidity: 50 % to 90 % relative humidity, non-condensing
Dimensions: 223 x 98 x 34 mm
Weight: 217 g
The charging voltage output from charger is usually slightly higher than the nominal voltage of
the rechargeable battery. For example, the charge voltage for one AA/ AAA rechargeable battery,
with nominal voltage 1.2 V , is 1.4 V .