Mavic2 Battery Mods

[beanbubba]

Just finished the battery controller mod and it appears to be a keeper:

Mavic2 Battery Controller Mods

We will now focus on M2 battery issues in this thread here.

 

[beanbubba]

Here is the factory M2 4S battery cell pack after being removed from the casing:

 

[beanbubba]

I had a lot of problems with those batteries. I bought 2 and both had bad cells.

cybernate, on my charger this was the only setting I could find:

I disabled it and the error still happened and at the same voltages.

Since the battery was toast and I was curious and flew the battery down til the bird dropped from the air when one cell hit zero. I was only 5 foot up over lush thick grass for a soft crash :

 

[SkyNinja]

Do you know if the MP2’s battery pins are in the same order as the MP 1st gen?

 

[beanbubba]

Do you know if the MP2’s battery pins are in the same order as the MP 1st gen?

View attachment 46205

I haven't tested the pinouts yet (did the power mod inside the battery controller). The MP pins were mirrored and therefore the plug was reversible, the M2 plug is notched and not reversible. You sent a note that @Pablo Chacon made a battery clip, so he would know the pinout chart.

 

[Pablo Chacon]

I haven't tested the pinouts yet (did the power mod inside the battery controller). The MP pins were mirrored and therefore the plug was reversible, the M2 plug is notched and not reversible. You sent a note that @Pablo Chacon made a battery clip, so he would know the pinout chart.

No it’s not the same as the M1. The pins for the M2 are 3,4 & 7,8...

 

[Kilrah]

I disabled it and the error still happened and at the same voltages.

When you've got packs with badly out of balance cells just connect each one at a time and do a 1s charge, way faster than balance charging. If you REALLY want to optimize do that on the lowest ones to bring them back close to the highest one and finish normally.

 

[SkyNinja]

No it’s not the same as the M1. The pins for the M2 are 3,4 & 7,8...View attachment 46245

Thanks!

 

[beanbubba]

When you've got packs with badly out of balance cells just connect each one at a time and do a 1s charge, way faster than balance charging. If you REALLY want to optimize do that on the lowest ones to bring them back close to the highest one and finish normally.

View attachment 46247

Duh... That is so simple yet it didn't cross my mind. Thanks for the tip sir.

 

[beanbubba]

No it’s not the same as the M1. The pins for the M2 are 3,4 & 7,8...View attachment 46245

@Pablo Chacon do you have a link for where I could buy a roll of that metal used for battery clips? Or do you know the specifications?

 

[SkyNinja]

@Pablo Chacon do you have a link for where I could buy a roll of that metal used for battery clips? Or do you know the specifications?

I believe this is what you need to make the battery chip. It is a little wider at .25” them one on my battery clip at .21” But that can be trim down easily. I believe they are using .025 inch thick or could be .016.

https://www.amazon.com/dp/B00FZS2GGI/ref=cm_sw_r_sms_tai_VbAMBb

 

[beanbubba]

I believe this is what you need to make the battery chip. It is a little wider at .25” them one on my battery clip at .21” But that can be trim down easily. I believe they are using .025 inch thick or could be .016.

https://www.amazon.com/dp/B00FZS2GGI/ref=cm_sw_r_sms_tai_VbAMBb

View attachment 46298

View attachment 46299

Thank you sir, parts ordered.

 

[beanbubba]

No it’s not the same as the M1. The pins for the M2 are 3,4 & 7,8...View attachment 46245

@Pablo Chacon how did you disable the upward vision sensor that the clip is covering up? When I disable the vision system in the Go4 app, all the other sensor disable except the upward on my bird.

 

[SkyNinja]

Just finished my battery mod.

 

[beanbubba]

Just finished my battery mod.

View attachment 46357

View attachment 46358

View attachment 46359

Nice, and stays away from all the vision sensors!!

 

[beanbubba]

Just finished my battery mod.

View attachment 46357

View attachment 46358

View attachment 46359

Were you tempted at all to solder to the pins on the other side of the board? I was thinking about trying this.

 

[Pablo Chacon]

@Pablo Chacon how did you disable the upward vision sensor that the clip is covering up? When I disable the vision system in the Go4 app, all the other sensor disable except the upward on my bird.

Are you sure. Did you test it? I was under the impression it disabled it. I’ve ran a few test long range runs with the clip directly on top of the sensor with out any notifications pop ups.

 

[Pablo Chacon]

@Pablo Chacon do you have a link for where I could buy a roll of that metal used for battery clips? Or do you know the specifications?

I did not make this clip. This was a M1 clip that I modified to fit into a M2.

 

[SkyNinja]

Were you tempted at all to solder to the pins on the other side of the board? I was thinking about trying this.

View attachment 46360

I was tempted, but I know I suck at soldering and did not want to risk it. So I just cut the clip, added wires and soldered them to the pins on top.

 

[SkyNinja]

I did not make this clip. This was a M1 clip that I modified to fit into a M2.

Yeah mine was a modified MP1 clip also.