Have you guys tried using this? It is a portable charger that can be charged via QC3.0 Powerbank and can connect the dock together like Smartree and DJI Charger.

Will all the batteries charged at the same time if you connect the docks together and charge via Powerbank?
Will all the batteries charged at the same time if you connect the docks together and charge via wall socket using DJI Spark Original Charger?

It looks like the equivalent of the builtin spark charging interface.

Usually only the more expensive powerbanks have QC2.0 or QC3.0, and only on one output port.
So it can charge one battery in less than an hour.

If you want to charge more than one battery at a time, you will need one qc2.0 or 3.0 powerbank for each battery.
(Or a very expensive power bank).

QC2.0 or QC3.0 does not matter here. Both can do 12V.

heliman Posted at 2018-5-7 00:52
It looks like the equivalent of the builtin spark charging interface.

Usually only the more expensive powerbanks have QC2.0 or QC3.0, and only on one output port.

I already have a QC 3.0 power bank. what I would like to know is if I link the 2 modules together, will they charge at the same time?

I guess your powerbank has one qc3.0 port.
It can deliver up to 18W.

I don’t know what that link feature does.
To answer if that could be shared among two of those cradles, I would need to see the user manual.
It will double the charging time if there are two cradles on one qc3.0 port.

heliman Posted at 2018-5-7 03:01
I guess your powerbank has one qc3.0 port.
It can deliver up to 18W.

Thanks heliman.

Prob is this portable charger doesn't have any user manual.

Last question.

This portable charger doesn't come with the DC Adaptor.
It says that the Charging Output is 13.1v / 10A.
Do you think a 12V / 1A will work? Or I really need to get a 13V / 10A adaptor?

No need for 13.05V.
12V will work. The question is if the round connect can take 12V, as it says 5.5V on it. Is it an input at all?
Otherwise it can only get 12V from a QC2.0 or QC3.0 capable power source.
A dumb USB power source will only give 5V (slow charging).

Thanks for sharing, I got the fly more combo with the charging hub, so I would buy one.

heliman Posted at 2018-5-7 03:01
I guess your powerbank has one qc3.0 port.
It can deliver up to 18W.

That 5.5 thing is the diameter of DC Input, not Voltage and it  is 13.1V @10A

I have this DC Adaptor which is 12V @1000mA. I'm wondering if this will work even if the Input is 13.1v @ 10A?

Sorry for too much question, don't have enough knowledge when it comes to electrics