MEC
– Energietechnik GmbH
OPERATING INSTRUCTIONS
AV4m
Vers.: 07/2011
Page 2 of 4
GLN: 9008390331330
2. Short Description / General Information
The AV4m is a multifunctional diagnosing- and quick charger for rechargeable batteries especially designed for
professional users.
Using a wide range power supply the charger can be operated in almost every international power network and
via 12V car adapter also in your car.
Each of the 4 charging bays can hold one NiMH- or NiCd-battery of the dimensions AA (Mignon) or AAA (Micro).
Via the selective charging bay choice you can separately or simultaneously charge, discharge, condition and
analyse each battery. A slide switch for the selection of the charging current allows you to choose between slow,
medium and quick charging time.
The precise charge control, the negative Delta-V detection procedure for detecting a full battery, an integrated
safety timer and a temperature monitoring for each charging bay ensure that your batteries are optimal charged
and protected.
The systematic usage of your AV4m can extend the lifetime of your battery, therefore save your money and make
an effective contribution to environmental protection.
3. Specific Features
-
Diagnosing- and Quick Charger for 1 to 4 NiCd or NiMH AA (Mignon) or AAA (Micro) batteries.
- Four independent charging bays
– charging of different types of batteries is possible (AA and AAA).
- Separate temperature monitoring of each charging bay
– battery temperature exceeding 50°C stops the
charge process of the affected battery.
-
Safety timer
– automatic charge stop for defective batteries, error is displayed.
- Quad display
– simultaneously display of function- and charge status of the inserted batteries.
- Automatic start of the charging process, max. 1,2 A charge current per battery.
- Automatic switching to trickle charge after end of charging.
- Battery forming
– automatic forming of damaged batteries
- Battery capacity measurement
– display of capacity (Ah), charging time (h) and energy index.
-
Battery cycling
– automatic discharge/charge until no more increase of capacity is detected.
- Battery full detection
– via negative Delta-V detection.
-
Selective charging bay choice
– functions can be set individually for each charging bay.
- Wide range input
– via provided power supply (100-240VAC 50/60Hz)
-
12 VDC Input
– via provided 12V car adapter.
4. Scope of delivery including short description of display and control element
1. Power Supply including cable
2. 12V car adapter including cable
3. Capacity-Button
the charged capacity (Ah) is shown in the display.
4. Select Cell-Button
each battery can be selected for the designated function (shown in display).
5. Discharge- & Cycling-button
short push (<2 sec) starts a discharge/charge cycle.
Long push (>2 sec) starts the cycling function.
6. Charging bays
(S1
– S4)
for cylindric NiCd- und NiMH-batteries in dimensions AA (Mignon) and AAA (Micro).
7. LCD-Display
separate display of information for each charging bay
(S1 - S4).
8. charge current switch
three charge currents can be selected via the slide switch:
Mignon / AA-batteries
Micro / AAA-batteries
Switch position
Charge current
Discharge current
Charge current
Discharge current
L
= Large (biggest charge current)
1200 mA
500 mA
600 mA
180 mA
M
= Medium (medium charge current)
900 mA
500 mA
400 mA
180 mA
S
= Small (smallest charge current)
700 mA
500 mA
250 mA
180 mA
