Battery mod thread

[Justinswidebody]

Is there any way to check if the battery has been updated?

If your app shows this then you're good to go.

 

[Marcuchinonis]

I haven't had a problem charging it to that at 1.5 amps.

I'm not sure on a way to know about the battery update. Does it show how many times you charged your battery in about section?

The three batterys have more than one cycles. I think I’ll have to buy a new one.

 

[Marcuchinonis]

If your app shows this then you're good to go.

I think this can be the one. ?

 

[yamigos]

I think this can be the one. ?
View attachment 87835

But I updated my drone with battery to 300, and i have not warning about updating battery. This is work too. I replaced 18650 and it work, not blocked.

 

[Justinswidebody]

Yes 300 update still works as long as you don't update battery

 

[yamigos]

Yes 300 update still works as long as you don't update battery

I haven't message about update battery after 300 and it work

 

[Marcuchinonis]

But I updated my drone with battery to 300, and i have not warning about updating battery. This is work too. I replaced 18650 and it work, not blocked.

What 18650 cells have you used?

 

[DannyDoi]

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[yamigos]

What 18650 cells have you used?

Sanyo ncr18650ga. And I want test sanyo 20700, this size fits as native battery box. Original battery plastic box size over 73mm x 43mm good for this

 

[XxRKDOxX]

Decided I would make my battery mod look a little better.

That's awesome!!! Looks clean... I'm getting ready to do this as soon as I figure out the right battery to buy lol, I noticed you're in Ocala! We have a small FB group called "citrus county drone racing and freestyle" check it out. We should fly sometime!

 

[Marcuchinonis]

Sanyo ncr18650ga. And I want test sanyo 20700, this size fits as native battery box. Original battery plastic box size over 73mm x 43mm good for this

Fly time with Sanyo ncr18650ga?

 

[yamigos]

Fly time with Sanyo ncr18650ga?

Full testing soon. But i thing it flytime like a Samsung

 

[OregonEd]

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In this video, what firmware update are you on? Are you flying without any updates?

 

[Justinswidebody]

That's awesome!!! Looks clean... I'm getting ready to do this as soon as I figure out the right battery to buy lol, I noticed you're in Ocala! We have a small FB group called "citrus county drone racing and freestyle" check it out. We should fly sometime!

I didn't realize anyone raced drones around here. I used to build race drones but never had anyone to fly with. Even built a race course around the farm I live on. It's not up anymore though.

 

[aeropic]

[QUOTE="Justinswidebody, hi, this is by far one of the most interesting thread on Mavic Mini ! Thanks admins for having accepted me.
I'm new to MM and still have to wait Christmas to get the mini ?.
However, I'm not new neither to rc nor to electronics...
I would like to first understand what are the functions implemented in the battery Bms ? Can we charge the batt with an external smart charger adapted to liion ?
I understand from the pinout drawing that the middle junction of the 2S cells is not accessible ? Is it ?
Do you think the 2 data lines are I2C or SPI data and clock lines ? If yes could we spy the bus to reverse ingeeneer the trafic ? The goal being to get rid of the stock BMS coding a kind of stub on a cheap microcontroler....
Well it's good to dream ?

 

[DannyDoi]

In this video, what firmware update are you on? Are you flying without any updates?

its not my video, i just post it here because the guy added a external battery
he said that he will explain in a future video how did he do it

 

[netsonic]

I would like to first understand what are the functions implemented in the battery Bms ? Can we charge the batt with an external smart charger adapted to liion ?

There are already chargers available that use only 2 wires to change the Mini's Batteries. Example here.
As for the pin out you can ask Justinswidebody as he is the expert who works on this. Look at post #59

 

[Liamjason123]

Ive never seen this before on my app does that mean im still good to go

If your app shows this then you're good to go.

 

[Justinswidebody]

Ive never seen this before on my app does that mean im still good to go

Probably not... Usually shows it after a flight

 

[yamigos]

For any batteries. You can change 18650 to vtc6 or others if power is maintained on bms. Its easy