VERSION
On the box is a sticker "... BM200 ..." and on the device bottom is "... BM200 ...". This is an older firmware and hardware version of the BM200, which is recognizable by the following characteristics: After Eischalten no version number is displayed. The light shines only 10 seconds, the batteries are too tight in the battery slots, the 12V connector is straight, the charging current is preset to 200mA. A newer version will be offered as BTL4 of Conrad and Völkner.
DETAILS
The board is stable. Equipment and power supply are packed in unsealed bags.
In the box were a 4-page English-language manual in A4 format and a 4-page German manual in A5 format and correspondingly smaller font. This pattern has been folded inaccurate. Both are easy to understand and where I read it correctly. In the German version, however, impossible charging current stage are given in Section 6.2 (500, 700, 1500, 1800) as opposed to Section 11 Specifications, or the English version where these voices.
The unit makes a very solid impression. Thanks to its size remains some distance between the batteries: Good for ventilation and cooling of the batteries. The mains plug and inserted batteries sit neatly and securely in the device.
The LCD display is large and easy to read and is illuminated after each keystroke 10s.
The default charging current is 200mA. Adjustable are the charging currents (and thus the half as large discharge currents) in 200mA increments only immediately after plugging the power supply (for all batteries) and after inserting a battery for the corresponding battery. The display will blink for 10 seconds. As long as there are flashing more battery slots, this will continue to put together. The distance of the streams, however, remains. When you put batteries in only the outer two slots, there are up to 1400mA possible. Occupied you also have one or two of the inner shafts are maximum 1000mA adjustable for all batteries and the setting outside is then automatically downloaded to 1000. In contrast to the charging current can be the mode at any time, either for a shaft or for all.
The displayed value (mA, V, or mAh h) can also be changed during operation at any time individually by slot selection for each slot or set together without slot selection for all. mA shows the actual current (due to the pulse method averaged over approximately 1 second).
With the Quick-Test can be the internal resistance (= impedance) determine the battery. This measurement is according to instructions with non-rechargeable batteries allowed.
To test the device, I have 4 batteries lose their charge with the test function with 500mA and 1000mA loaded. Device and battery were maximally lukewarm. With an infrared thermometer, I measured when unloading a maximum of 34 ° C, 46 ° C during charging.
In test after charging and discharging the discharged capacity (mAh) is displayed even after the battery is recharged. So it should be.
After charging the battery should be left for a while in the device because the device sometimes displays after 2/3 of the time actually required Full (without overheating), but soon again switches to the store. I suspect that the instrument approach scans with these breaks at the end of the charging time on the battery capacity and that is better for the battery than overcharging.
BTL4:
In Völkner and Conrad there is a very similar charger BTL4 which 2.1 Ad and in which a 400mA charge current is preset after starting the firmware version. 400mA is a better compromise between battery conservation, security and loading speed for AA and AAA batteries than 200mA. And when BTL4 allows the charging current at any time change (for mode switching), without having to insert the battery for new. When BTL4 displaying 30s lit after pressing the key.
