I usually don't have time to enjoy flying my Mini 2, but I took some time today to fly it and it was horrible. The video was lagging while the signal was strong. The weird thing is that all of a sudden the signal went from Great to poor immediately and randomly. I was flying about a 30-40ft radius around my house. I could not figure it out, because the signal was good and video lag and froze. In other instances the same happened, but signal went low and disconnected. I could not correlate the signal to the video lag, since it lagged while it had great signal. Not sure if this is a firmware issue like I read in other posts about heavy lagging. App Version is 1.15.4, RC Firmware is 04.11.0400.
DJI Mini 2 Heavy Video Lag
- Thread starter idanny76
- Start date
Lag/stutter with live video feed from drone to controller screen in a built up/urban environment? Odds-on it's WiFi interference from surrounding devices/routers/WiFi boosters playing Hob with your transmission signal.
Best way to check: boot the drone, power on the controller, let the app load, but don't take off.
Three dots top right corner - go to the transmission tab and take a look at the image transmission state graph which will tell you what frequency band the control signal is transmitting on.
Top right corner: drop-down box that lets you know whether it's set to DUAL: 2.4ghz: or 5.8ghz. Check it on 2.4ghz, then select 5.8ghz and compare. Choose the frequency that shows the least interference.
Sometimes the DUAL setting doesn't automatically flip to a clear frequency when it should.
Remedy: manually select the 5.8ghz band and try your flight again.
Best way to check: boot the drone, power on the controller, let the app load, but don't take off.
Three dots top right corner - go to the transmission tab and take a look at the image transmission state graph which will tell you what frequency band the control signal is transmitting on.
Top right corner: drop-down box that lets you know whether it's set to DUAL: 2.4ghz: or 5.8ghz. Check it on 2.4ghz, then select 5.8ghz and compare. Choose the frequency that shows the least interference.
Sometimes the DUAL setting doesn't automatically flip to a clear frequency when it should.
Remedy: manually select the 5.8ghz band and try your flight again.
Thank you for replying. The detailed explanation makes a lot of sense and I truly appreciate it. I will try again and hopefully it's just interference.
Fingers crossed it is as simple as that. Have a nice Christmas.
Merry Christmas too you too. Guess what.... I switch to the 5.8ghz and it the problem went away. I notice it was on the 2.4 frequency and there was too much interference. There is another issue I am having and I am guessing it has to do with the age of the batteries. When the battery is down to maybe the 50-55% it starts the request to come back home even though I am not too far from the home location. I would understand requesting the return home if it calculated that I was far away from the home location and it needed the charge to come back to the home point. But if I am around a 10-20 ft radius, i would not expect it to request the return home until it is 10-20% low battery. Also the batteries are not lasting long..... I have to pay attention the flight time with the full charge, but it seems like its draining fast. The batteries are 21/2 years old.... But I have not flown the drone that often. Maybe 40 times total since I bought it on May 2022.
Take a look in the app 'battery' tab and see what your cycle count is for each battery - this is how many times they've been charged to 100% regardless of how many times they've been used. It might be that you've inadvertently damaged the health of the battery cells (common problem and something I'm guilty of doing myself which is why I've ended up with two Mavic 2 batteries I can't trust for flight anymore).
They're LiPo 2S chemistry. LiPo's really hate being left fully charged for long periods of time. You can end up with all sorts of problems, some of which you mention in your post (sudden heavy draining under load being one of them). It is recommended to discharge the batteries (all of them) to about 30% before leaving them to lie for extended periods of time without flight use.
If your batteries are chemically stressed: they're in the process of failing and the only solution is to buy some new ones... luckily, compared to most other DJI batteries - they're relatively cheap. Don't second guess IFB's - if they're giving you the 'hinky' vibe: replace 'em.
Just as a matter of interest, there are two types of IFB for the Mini 2: the 'international' version and the 'JP' (or Japanese) version which is quite a bit weaker. The easiest way to tell them apart will be printed on the battery sticker.
The international battery weighs 82.5 grams: is 2250mAh and has an energy of 17.32Wh
The JP: weighs 48.9 grams: is 1065mAh with an energy of 8.9Wh.
Your awesome... Great advice and much knowledge. I will definitely check the battery tab and look into getting the larger capacity batteries. I know for sure that they are going bad and its not worth loosing the drone, because of a faulty battery. Really appreciate you advice and knowledge. Thanks again.
Do you mean these when you say the international version?
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These are my current batteries. I have two of these. Are these the international?
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Information (top left corner) tallies with the international version of the battery (full power).
I charged the batteries and flew the Mini 2 today. Batteries seem good. I flew today just to test batteries flying time and the flight lasted around 23-25 minutes. One battery has 54 charge cycles and the other had 67. I guess they are still in good shape.... I noticed it wanted to return home at about 50% battery charge and the problem was the return home altitude. I just got a new phone and I guess all the settings were reset. The altitude was set to 1,600 ft. and I changed it to 180 ft. and now it asks to return home around 20%. I also replaced the front end propellers, because one had some damage from a previous landing. I guess I am good now and I appreciate all the help, thank you.
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