DJI sells there own unit but it only charges one battery at a time, starting with the fullest and following with next most charged. ( I see while I was posting, you mentioned the DJI unit)
I have the same thing from before Hanatora took it over as a brand. Works excellent over the last 8-9 months. Takes a bit longer than advertised, but will charge the controller and 4 batteries in about 90-100 min when connected to 120V AC. In the car it takes longer.
Thanks. I went with the OEM product linked, however. It doesn't has as many features, but it should fit in my backpack.
you can get the identical result with the original which is certainly better than others, because it was designed and built by those who designed and built the rest of the drone radio control and batteries. it is just a commercial issue because they have added completely useless gagets, like the display with the voltage reading but they have no use since they are not normal batteries but smart batteries in fact the batteries communicate with the battery charger controlling temperature voltage and much more you need a gaget not even knowing if they use the sensors inside the batteries, so in my opinion they only serve to tap money bye.
in fact the original charges one battery at a time so as to have enough power to do its job. So you agree with me that they are useless gags?
I have a 3rd party charger like the OP's picture but under another company's name. It charges my 4 batteries at the same time rather than sequentially like DJI's (OEM) charger. It also charges/discharges to storage voltage.
That step up transformer I posted earlier lets you get 13.8v even when parked. One does have to watch system voltage with those if they only have one battery. My truck has a dual battery setup, plus I also put in a third portable one in back that self-charges off the backup battery or solar panels when we are camping.
I use one for charging- it allows me to not worry about it while doing other stuff. I do take safety precautions with it as with all chargers too.
I have the standard OEM charger and charge 3 batteries regularly. As stated earlier, it charges then sequentially and takes about an hour or so per battery. I have using it for about a year with no problems. I do depend on each batteries capability to self discharge if I am not going to fly for a while. You can set the number of days before it starts the self discharge in the Go4 app.
