Has anyone bought a double battery Mavic 3 Mod?

[Conservative Nihilist]

While this is interesting, it really isn't relevant to a double battery Mavic 3 mod, which is the thread topic,

Has anyone bought a double battery Mavic 3 Mod?​

My question in Post #18 above was directed to @solidhouse regarding the Mavic 3 double battery which he has been testing, which is an entirely different product, and Litchi limitations are of course not relevant for the Mavic 3 with no SDK available. The Mavic 3 double battery is also clearly wired in parallel and should accurately be reporting true combined flight time and battery percentage.

So, @solidhouse what say you to my questions in Post#18?

Apologies for my responding to the wrong topic. I should have scrolled up the page before commenting. These modular batteries are available for the Mavic 1 Pro and Mavic 2 Pro, and I wrongly presumed your question was about the Mavic 1 Pro.

 

[GadgetGuy]

Apologies for my responding to the wrong topic. I should have scrolled up the page before commenting. These modular batteries are available for the Mavic 1 Pro and Mavic 2 Pro, and I wrongly presumed your question was about the Mavic 1 Pro.

No problem. Best to reply to a specific post to avoid confusion, especially when two people hit send close in time to each other, separating the post you intended to reply to immediately before your post, which then gets replaced by another post that is unrelated to your lone reply. It's happened to me, too!

 

[solidhouse]

What can you now tell us about the design of the double battery setup, after all of our speculation above? Is the internal battery a modified OEM DJI battery? What is the included external battery weight and amperage, and brand name? How are the two batteries connected? Is it hardwired, or is it modular in any way, that would make it possible to swap the existing external battery for another, perhaps one with more amperage, or less weight, with a higher mAH/g ratio? Does the mounted external battery block the GPS signals in any way, or interfere with any of the OA cameras? Do you still use this double battery setup for regular use, or are there issues with it that have caused you limit your usage of it? Would you recommend this setup? Eager to hear all your feedback!

The setup is an original DJI battery modified with wires running internally through the end. The attached battery pack appears to be a generic of some sort. I haven’t done a tear down so I’m not sure the details of how it is wired and do not know specifics / brand name / capacity. It does not seem to interfere with either OA or GPS signal. While I haven’t had any issues with this battery, I do not use it on a regular basis. I’m simply not comfortable with all of the extra weight. It seems like the rear motors have to work extra hard when this battery is installed. While the extra flight time is great, I don’t want to risk a crash or otherwise damaging my Mavic 3.

I am hoping that DJI will eventually release a drone that will give users a true 45-50 minutes of flight time.

 

[GZ4]

i wanna see this battery on the Air3

 

[GadgetGuy]

The setup is an original DJI battery modified with wires running internally through the end. The attached battery pack appears to be a generic of some sort. I haven’t done a tear down so I’m not sure the details of how it is wired and do not know specifics / brand name / capacity. It does not seem to interfere with either OA or GPS signal. While I haven’t had any issues with this battery, I do not use it on a regular basis. I’m simply not comfortable with all of the extra weight. It seems like the rear motors have to work extra hard when this battery is installed. While the extra flight time is great, I don’t want to risk a crash or otherwise damaging my Mavic 3.

I am hoping that DJI will eventually release a drone that will give users a true 45-50 minutes of flight time.

My bad for not realizing in the original description that it is 10,000 mAh which is exactly twice the stock internal 5,000 mAh of the stock Mavic 3 battery.

By comparison, what hover flight time you getting from your original Mavic 3 batteries? I average about 30 minutes realistically to 10% remaining, so getting 45 minutes in a hover is roughly the same 50% increase in flight time from a doubling of the mAh of other drone external battery setups I have had in the past.

Can you weigh the combined battery so we can see how efficient it is relative to mAh/g compared to the stock internal battery alone? Lastly, other than the motors working harder, how does it handle in flight? Does it struggle with maneuverability?

Stock battery weighs 335.5 grams for 5000 mAh for comparison.
The maximum payload of a dropper sold for the Mavic 3 is 500g and it weighs 85g, so less than 600g for an external battery should be fine, and 51 Drones has shown the Mavic 3 can actually lift up to 907g, or slightly more than its own weight!

So I am eager to find out what the total weight of the double battery is so we can subtract 335.5g and find out the additional weight of that second battery, and from that, how inefficient it is, relative to the internal 5000 mAh of the stock battery at 335.5g.

I'll bet that all the external components weigh much more than 400g, and that a more efficient and more expensive external battery could be used, weighing a lot less, reducing the struggling of the motors, and lengthening the flight time even more. The hard part was soldering the connecting cable to the internal stock battery. Too bad they don't sell it with XT60 connectors so you could choose any external battery you wanted.

Now also only $318.

https://www.aliexpress.us/item/3256804697888117.html

One final clarification. Does the Fly app accurately represent the correct combined flight time and diminish the remaining percentage battery properly?

 

[solidhouse]

My bad for not realizing in the original description that it is 10,000 mAh which is exactly twice the stock internal 5,000 mAh of the stock Mavic 3 battery.

By comparison, what hover flight time you getting from your original Mavic 3 batteries? I average about 30 minutes realistically to 10% remaining, so getting 45 minutes in a hover is roughly the same 50% increase in flight time from a doubling of the mAh of other drone external battery setups I have had in the past.

Can you weigh the combined battery so we can see how efficient it is relative to mAh/g compared to the stock internal battery alone? Lastly, other than the motors working harder, how does it handle in flight? Does it struggle with maneuverability?

Stock battery weighs 335.5 grams for 5000 mAh for comparison.
The maximum payload of a dropper sold for the Mavic 3 is 500g and it weighs 85g, so less than 600g for an external battery should be fine, and 51 Drones has shown the Mavic 3 can actually lift up to 907g, or slightly more than its own weight!

So I am eager to find out what the total weight of the double battery is so we can subtract 335.5g and find out the additional weight of that second battery, and from that, how inefficient it is, relative to the internal 5000 mAh of the stock battery at 335.5g.

I'll bet that all the external components weigh much more than 400g, and that a more efficient and more expensive external battery could be used, weighing a lot less, reducing the struggling of the motors, and lengthening the flight time even more. The hard part was soldering the connecting cable to the internal stock battery. Too bad they don't sell it with XT60 connectors so you could choose any external battery you wanted.

Now also only $318.

https://www.aliexpress.us/item/3256804697888117.html

One final clarification. Does the Fly app accurately represent the correct combined flight time and diminish the remaining percentage battery properly?

I’ve posted the weight of the combined battery in the Mavic 3 double battery review:

Review of Mavic 3 double battery

Hello all, Here is my review of the Mavic 3 double battery mod purchased on AliExpress. Charging time takes about twice as long as the standard DJI battery. The standard DJI battery weighs 330 grams while the double battery weighs 652 grams. The double battery is quite heavy. I did a hover...

mavicpilots.com

I tested the modified battery against the standard battery and posted the hover time on the above link.

The DJI fly app does actually correctly list the time remaining and the % of battery left. I was a little surprised by this.

The drone seems a bit more sluggish with the modded battery on it. What I mean by that is that I could tell the Mavic 3 was weighed down. It just had that “feel” to it.

I wish that someone would release a much higher quality aftermarket battery which weighs the same, but has more mAh. I bought a battery from AliExpress for my Mini 3 Pro which claimed to have increased mAh. However, all of the flight / hover times turned out to be exactly the same as the DJI stock battery.

 

[andrew.ternes]

Hi, Are people using these double battery mods for extended flight time or for precautions against battery failure?
thanks
Andrew

 

[GadgetGuy]

Hi, Are people using these double battery mods for extended flight time or for precautions against battery failure?
thanks
Andrew

This lengthy thread and discussion should answer your question.

Review of Mavic 3 double battery

No need to worry about the aluminum Motors , there designed to Negotiate Extreme levels of Heat It is certainly not the aluminum part of the motors to worry about, but the magnets glued inside these motors which, beyond a certain temperature, begin to lose part of their magnetic properties...

mavicpilots.com

Hint: It's extended flight time!

 

[Gpary]

The link to that product says it's no longer available. What I'd rather do is connect one of my own spare batteries, instead of buying a new one. Has anyone heard of such a mod?

 

[Gpary]

I'd like to see a dual battery kit that allows me to use my own batteries.

 

[Conservative Nihilist]

I'd like to see a dual battery kit that allows me to use my own batteries.

I have seen jury-rigged special adapters that allow a second piggy-backed battery to be added atop the stock battery. Still, the far more elegant and aerodynamic solution is the selection of oversized batteries on sale with Ali Express, for the Mavic 1 Pro and the Mavic 2 Pro.

https://www.aliexpress.com/item/1005004873980293.html?spm=a2g0o.order_list.order_list_main.10.76821802ysZmXL

 

[Flight_mover]

I have seen jury-rigged special adapters that allow a second piggy-backed battery to be added atop the stock battery. Still, the far more elegant and aerodynamic solution is the selection of oversized batteries on sale with Ali Express, for the Mavic 1 Pro and the Mavic 2 Pro.

https://www.aliexpress.com/item/1005004873980293.html?spm=a2g0o.order_list.order_list_main.10.76821802ysZmXL

I bought the battery and after a few tests at home I put the battery to a hard test with the Mavic 3. I sent the drone with the double battery to the Sundhnúkur volcano in Iceland and because of the strong gas formation during the volcanic eruption I could only get within 8 kilometres. So I flew to the volcano a total of 3 times with the battery. The average airtime was 43 minutes. Everything went well. Three other drone pilots had underestimated the strong wind in iceland and lost their drones because they were too long in the target area and had too little battery for the return flight. no problem with the double battery. By the way, I flew at night and during the day.
The only problem was with my M3E. The drone refused to take off with the double battery. But I have to test it again here.

Best regards

 

[Conservative Nihilist]

I bought the battery and after a few tests at home I put the battery to a hard test with the Mavic 3. I sent the drone with the double battery to the Sundhnúkur volcano in Iceland and because of the strong gas formation during the volcanic eruption I could only get within 8 kilometres. So I flew to the volcano a total of 3 times with the battery. The average airtime was 43 minutes. Everything went well. Three other drone pilots had underestimated the strong wind in iceland and lost their drones because they were too long in the target area and had too little battery for the return flight. no problem with the double battery. By the way, I flew at night and during the day.
The only problem was with my M3E. The drone refused to take off with the double battery. But I have to test it again here.

Best regards

Wow, that is a real test of any drone and its battery. If Ali Express extra-range batteries are capable of powering a drone that is sent flying above the intense heat of a volcano, there can be no question that Ali Express after-market batteries meet and exceed the specifications of DJI OEM batteries.

I want to suggest that you write a review about this battery on the Ali Express website, and include this account of flying over a volcano, to endorse the product that served you so well, and to dispel the notion that after market batteries are inherently less reliable than original DJI batteries. I raise a toast to you, sir, for having the courage to place your pricey drone in harm's way for such a grueling test of aircraft and battery.

 

[Flight_mover]

Wow, that is a real test of any drone and its battery. If Ali Express extra-range batteries are capable of powering a drone that is sent flying above the intense heat of a volcano, there can be no question that Ali Express after-market batteries meet and exceed the specifications of DJI OEM batteries.

I want to suggest that you write a review about this battery on the Ali Express website, and include this account of flying over a volcano, to endorse the product that served you so well, and to dispel the notion that after market batteries are inherently less reliable than original DJI batteries. I raise a toast to you, sir, for having the courage to place your pricey drone in harm's way for such a grueling test of aircraft and battery.

That's right, it was a real endurance test. But to be honest, I flew there with the other M3 and the regular battery beforehand and had 54% battery when I reached the volcano. I immediately turned round and landed with 11 %. Then I realised that I would only get the pictures and films I wanted if I did the load test with the double battery. And I have to say, the product is very good. I have now used this extra range 12 times. The second use was in the Indian Ocean. I flew very far out to sea in Mauritius to watch whales. And it worked.
I will give the battery a good rating.
Here are a few pictures that were only possible thanks to the battery.

Best regards

 

[Conservative Nihilist]

Wow, that is an amazing catch pulled off so far from shore thanks to Ali Express batteries for DJI drones.