I just got the YX charger for the M2 from Amazon. Having used the same “brand” for my
M1 and was very happy with it, I got the same one.
Since it obviously exist several different brands of this blue, aluminum clad charger that otherwise looks identical, and since it is marketed by a company (if any) that’s totally non transparent, I decided to open it up and try to assess if it looked safe enough to use, also wanted to see if it was grounded, since it is painted and measuring continuity gave nothing.
Sure enough, it was grounded and it seem to be well built, with adequate spacing between the live/neutral contact points (a common problem with dangerous cheap electronics is among other things, that the wiring is to close and might short. There have been several accidents in Sweden, and I’m certain also in lots of other parts of the world).
Funny thing is that I noticed that the specs printed on the circuit board was way off from the advertised ones, the board said 13.05V/4A*3. Since this closely resembled the charging spec of the
M1, I wondered if they had used the same circuit board as for the
M1, but bumped up the voltage and the amperage somehow.
I disassembled the charger for the
M1, and sure enough, it looked identical, and had the same specs printed in the board.
I haven’t charged any batteries yet with the charger, but I measured the voltage on the charging lead pins on and it was fine, 17,6V. Measured with both analog and digital multimeter. The USB-ports were slightly above 5V, which is normal. I could not test the max amp output from the USB-ports since I didn’t have anything that draw up to 3 amps available. My guess though, is that the output is 1.5A per port.
The output printed on the M2 charger is 17,6V/12A (3x4A) and 5V/3A for the USB-ports. On the
M1 charger it’s 13.05V/13,5A (3x4,5A) and 5V/2A.
I also noticed that the ground connection on the circuit board was not connected at any of the two chargers, instead it was bolted to the side of the chassi.
Any thoughts about these findings?
M2 charger:
M1 charger:
