Hi
I was wondering, How long does it take to fully charge a mini 2 battery using the 2-way charging hub, the DJI charging cable, and the 18 w charger that is included in the fly-more combo?

Thank You!

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The manual says 4 hours for all 3 batteries with the 18W charger. Since the hub does not charge concurrently, divide the number provided by 3 to get the time for one battery...

CemAygun Posted at 4-3 20:58
The manual says 4 hours for all 3 batteries with the 18W charger. Since the hub does not charge concurrently, divide the number provided by 3 to get the time for one battery...

Just read the manual and it does say 4 hrs, but when I search online it says 6 hrs for the 3 batteries.
I charged it today, 50%-100%, and the charging time was 1 hr.
So to charge from 0%-100% would be 2 hrs
and 3 batteries would be 6 hrs.
So is the manual wrong?
After all I was using quick charging.

Hi there, I have replied to your post: https://forum.dji.com/forum.php?mod=viewthread&tid=239434, thanks.

3 1/2 hours

Wait, I’m getting mixed answers.

Jackie-Gan Posted at 4-3 21:12
Just read the manual and it does say 4 hrs, but when I search online it says 6 hrs for the 3 batteries.
I charged it today, 50%-100%, and the charging time was 1 hr.
So to charge from 0%-100% would be 2 hrs

Battery charging is not linear like that,  often the first 50-80% can take as long as the last 20%. With the right charger <90 mins per battery.  I used a 5v 2.1amp charger and it took 13 hours to charge three batteries that were all part charged.

Quick charge works in mysterious ways Jokes aside it goes fast until a certain charge level and then slows down to a crawl (exactly as DAFlys said). If anyone wants the full explanation of  it's inner workings here is some good -and a bit long long- read:

https://www.androidauthority.com/fast-charging-explained-889780/

I don't know what charging range DJI's official numbers from the manual (as well as their post) cover. I recon most people would be charging from 30-20% to a full battery. I will try to keep a clock next time I charge; yet it would be of little use I am afraid, as I never let my batteries fully discharge.

According to the manual mini 2 batteries can be charged at upto 29W, so if you use a USB-C charger rated at 29W or over the batteries will charge faster. I charge the battery in the drone with a 45W USB-C car charger and it takes less than an hour from <20% to full.

The hub can charge up to 36W (12v/3A), so with a 36W+ charger it takes around 60 minutes from 0 to 100%, and with the official Dji 18W charger it takes around 84 minutes per batt.

So total charge for three depleted batts is around 4 hours and 15 minutes for the standard 18W charger and 3 hours and 3 minutes for a 36W capable charger.

Of course if the battery is not fully depleted the recharge times will be a little faster. It's recommended to land at around 30% battery both for safety (energy left to withstand any problem) and for battery life.

DAFlys Posted at 4-3 23:29
Battery charging is not linear like that,  often the first 50-80% can take as long as the last 20%. With the right charger

I think your 5V 2.1A charger is faulty. It should not take 13 hrs if its actually supplying 10.5W/h. 10.5W/h. 13 hrs would be 136.5Whs. The battieries are only 17.32Wh each, so total power required is 3 x 17.32 = 51.96Wh. Why are you not using the DJI 18W charger ?

Ok, thanks for all your answers and suggestions. I sure will keep them in mind

Mavic57pro2 Posted at 4-4 09:16
I think your 5V 2.1A charger is faulty. It should not take 13 hrs if its actually supplying 10.5W/h. 10.5W/h. 13 hrs would be 136.5Whs. The battieries are only 17.32Wh each, so total power required is 3 x 17.32 = 51.96Wh. Why are you not using the DJI 18W charger ?

I plugged it into a phone charger without initially thinking about it.   that charger works fine for iPad or iPhone though.

Jackie-Gan Posted at 4-3 21:12
Just read the manual and it does say 4 hrs, but when I search online it says 6 hrs for the 3 batteries.
I charged it today, 50%-100%, and the charging time was 1 hr.
So to charge from 0%-100% would be 2 hrs

Charing batteries are rarely linear, and they are usually much slower when above and below a certain charge level. So yeah, the 4hours charged from zero percent should be accurate.

I got a 12V 3A (36W) charger and it takes about an hour per battery, 0 - 100%. Even though it charges faster at first it slows down a lot for the last 3rd and is not faster for the last bit.

Expect DJI to post a notice about not recommending 3rd party chargers but their charging hub states a max INPUT of 12V 3A but don't provide a charger that powerful. So I got a nice Xiaomi charger. It is 65W but only at higher voltages, just 36W at 12V.

it takes me about 15-20 mins with a 65w charger, but i don't know if that is good for the battery

djiuser_8hrmoJL1TyZm Posted at 6-15 09:45
it takes me about 15-20 mins with a 65w charger, but i don't know if that is good for the battery

Das no good

Can I charge the battery directly on drone using Type c cable

djiuser_z85G6fjULfGI Posted at 10-26 12:41
Can I charge the battery directly on drone using Type c cable

Yes.............

HighInBC Posted at 4-10 03:58
I got a 12V 3A (36W) charger and it takes about an hour per battery, 0 - 100%. Even though it charges faster at first it slows down a lot for the last 3rd and is not faster for the last bit.

Expect DJI to post a notice about not recommending 3rd party chargers but their charging hub states a max INPUT of 12V 3A but don't provide a charger that powerful. So I got a nice Xiaomi charger. It is 65W but only at higher voltages, just 36W at 12V.

Its Christmas day.  I've got my Mini2 fly more kit opened, and charging.  I didnt realize that the USB charging cube I was use most not be "good enough" as it wasnt quick charging.  Using the DJI one, and tried one from a newer samsung phone, they both did the quick charge.


Interesting conversation about the max volatage/amp/watt for the intelligent charger. Seems like DJI should have a recommendation for a charging cube that could take advantage of that.

What have others used?

The one supplied most of the time, other than that, whatever I have to hand.
Note the cable used has an influence too,  I have seen 1/4A with one cable jump to 1A+. with another cable, sam charger same device being charged

hey i was wondering if i can charge my dji mini 2 with a 45 w charger. But i am concerned it will shorten battery life

Hello, I have just one small question. How much will it take a dji mini se battery to charge from 15% to 90% or to 100%?
Thanks.

I purchased the mini 2 fly more pack today, using the 3 way multi charger seems to take 4+ hours a battery for me…
Using the plugs it came with and I can’t work out for the life of me why it’s taking so damn long
Literally sat here all day just waiting for one, so I could make my account

From memory a new battery takes a long time to charge but also some cables greatly limit the charging current, you can get USB ammeters that also record the charge that has been passed. They are a handy thing to have at times.

Sean-bumble-bee Posted at 12-27 04:20
From memory a new battery takes a long time to charge but also some cables greatly limit the charging current, you can get USB ammeters that also record the charge that has been passed. They are a handy thing to have at times.

You can also get USB C cables with a charging power display built in.

I've got a couple of these:
SOOPII USB C to USB C Cable,[1.2M,2 Pack],Nylon Braided Type-C Cable,100W PD Fast Charging Cable with LED Display for lPad Air/lPad Pro, MacBook Pro, Samsung Galaxy S21/S10/S9/Plus (Black) https://amzn.eu/d/8NhPVcL

They show Watts (power) rather than amps or volts, but you can see the charging power change throughout the charging cycle as the device being charged draws less and less power as it reaches capacity.

No Original Thought Posted at 12-27 04:29
You can also get USB C cables with a charging power display built in.

I've got a couple of these:

Neat ! But USB-C to USB-C which would be a problem for Luddites like me with only USB type A chargers lol.

I know I am responding to an old message but wanted to comment in case someone stumbles across this at a future date.  Mini 2 batteries will charge at up to 30 watts if you use a 30 watt or greater PD charger.    This is nearly double the rate obtained from the stock 18 watt charger.  This works with the batteries in the hub.  I have not tested charging in the aircraft as I never do that.

Sean-bumble-bee Posted at 12-27 05:03
Neat ! But USB-C to USB-C which would be a problem for Luddites like me with only USB type A chargers lol.

That's a fair point... And as such they don't work with the DJI supplied charger either

Sean-bumble-bee Posted at 12-27 05:03
Neat ! But USB-C to USB-C which would be a problem for Luddites like me with only USB type A chargers lol.

How about this, then:

KINCOOPA USB-A to USB-C PD Fast Charging Data Cable with Power Display, 6A 66W, 4ft 1.2m, Zinc Alloy Port with Braided Cable https://amzn.eu/d/hwU4Sr7

Can't vouch for it, but looks like it would do the job.

No Original Thought Posted at 12-27 14:54
How about this, then:

KINCOOPA USB-A to USB-C PD Fast Charging Data Cable with Power Display, 6A 66W, 4ft 1.2m, Zinc Alloy Port with Braided Cable https://amzn.eu/d/hwU4Sr7

Cooooooool  

Hey folks just a dumb question here to resurrect this thread.

I recently got my part 107 and am opening up a drone business.

When I fly a decent size roof for inspection it takes a little short of 1 battery.   SInce I'm trying to group my flights into 1-2days per week I'm going to run into some charging issues.

So my thought is to throw a car charging hub into my vehicle and continually charge both the 3 battery hub and the controller.

Here is the one I am looking at:

https://www.amazon.com/Charger-Adapter-Identification-Tablets-Devices/dp/B08Z3HB7FL/ref=sr_1_3?crid=13T2V3WE3T7VR&keywords=12V+usb+hub%2C+2.4amp+car+charger&qid=1685279992&sprefix=12v+usb+hub%2C+2.4amp+car+charge%2Caps%2C94&sr=8-3

And I may buy an additional 3 battery charging hub.

Is my logic sound here?

HK