Welcome to our Community
Wanting to join the rest of our members? Feel free to sign up today.
Sign up

Bebop battery hack (request for advice)

kokorodrone

New member
Joined
Jan 6, 2021
Messages
2
Reaction score
0
I've just joined the forums here to post a question about a Bebop battery hack. I recently received an original Bebop with Skycontroller from a relative who almost never flew the drone. It came with three batteries but one was completely dead. The other two were resurrected via trickle charge with a hobby charger. I tore down the dead battery and threw away the three cells housed within. One was leaking and had contaminated some of the internal electronics so I cut everything away and disposed of it all. I did, however, keep the cables coming from the connector as I had a crazy idea about making a new battery...which is what I'm writing about here. :) I did the following:

1. Disassembled the old battery and threw the original cells away
2. Purchased some 18650 batteries (3600 mAh capacity)
3. Purchased some battery cases with leads
4. Glued three battery cases together and soldered them in series with thick gauge cable
5. Soldered the assembly to the wires leading to the connector on the old battery pack

I now have a 3600 mAh capacity 11.1 Volt battery that powers on my Bebop. The Bebop will then pair with my Skycontroller but...here is the problem...I have no communication between the battery and drone so the drone registers the battery as being empty (0% charge) and thus will no allow me to take off. :-(

I'm trying now to figure out how to either send battery charge information to the drone or disable the drone's prohibiting me from taking off. Of course the prior is more desirable...I don't want to by flying around with no idea how much charge I have remaining. ;-)

Does anyone have any ideas about how to add something (coulomb counter?) to send the required information to the drone?

The two original batteries I have allow me to fly the drone for somewhere between 8 to 10 minutes but I'd like to continue with my little experiment. Any advice or ideas will be appreciated.

Here is a shot of the custom battery pack. It is 61 grams heavier than the original battery and slightly larger...I will finish out the custom pack if I ever get the drone to fly with it. For now, the hanging ribbons are to aid in removing the 18650 cells from extremely tight cases. The original battery cover won't fit over the three cells completely but I might modify it a bit to at least make it look a bit better....again, if I ever get it to fly. ;-)

Kokorodrone (from Japan)

P.S. I found the following page and see that the battery level is recorded as an integer within the Bebop system but am not sure where the information comes from.. Having fun searching...any advice will be much appreciated. :)

 

Attachments

  • CustomPack.jpg
    CustomPack.jpg
    1.9 MB · Views: 6

Gipsz Jakab

Well-known member
Joined
Dec 22, 2019
Messages
652
Reaction score
278
Age
54
Location
Hungary
I've just joined the forums here to post a question about a Bebop battery hack. I recently received an original Bebop with Skycontroller from a relative who almost never flew the drone. It came with three batteries but one was completely dead. The other two were resurrected via trickle charge with a hobby charger. I tore down the dead battery and threw away the three cells housed within. One was leaking and had contaminated some of the internal electronics so I cut everything away and disposed of it all. I did, however, keep the cables coming from the connector as I had a crazy idea about making a new battery...which is what I'm writing about here. :) I did the following:

1. Disassembled the old battery and threw the original cells away
2. Purchased some 18650 batteries (3600 mAh capacity)
3. Purchased some battery cases with leads
4. Glued three battery cases together and soldered them in series with thick gauge cable
5. Soldered the assembly to the wires leading to the connector on the old battery pack

I now have a 3600 mAh capacity 11.1 Volt battery that powers on my Bebop. The Bebop will then pair with my Skycontroller but...here is the problem...I have no communication between the battery and drone so the drone registers the battery as being empty (0% charge) and thus will no allow me to take off. :-(

I'm trying now to figure out how to either send battery charge information to the drone or disable the drone's prohibiting me from taking off. Of course the prior is more desirable...I don't want to by flying around with no idea how much charge I have remaining. ;-)

Does anyone have any ideas about how to add something (coulomb counter?) to send the required information to the drone?

The two original batteries I have allow me to fly the drone for somewhere between 8 to 10 minutes but I'd like to continue with my little experiment. Any advice or ideas will be appreciated.

Here is a shot of the custom battery pack. It is 61 grams heavier than the original battery and slightly larger...I will finish out the custom pack if I ever get the drone to fly with it. For now, the hanging ribbons are to aid in removing the 18650 cells from extremely tight cases. The original battery cover won't fit over the three cells completely but I might modify it a bit to at least make it look a bit better....again, if I ever get it to fly. ;-)

Kokorodrone (from Japan)

P.S. I found the following page and see that the battery level is recorded as an integer within the Bebop system but am not sure where the information comes from.. Having fun searching...any advice will be much appreciated. :)

I have Anafi. The Anafi battery has a (Battery Management System) BMS circuit. This monitors charging and discharging. The charge data is transferred from here to the drone motherboard.
Without this circuit, the drone has no information about the battery and thus does not even take off because it is not safe.
 
  • Like
Reactions: kokorodrone

kokorodrone

New member
Joined
Jan 6, 2021
Messages
2
Reaction score
0
I have Anafi. The Anafi battery has a (Battery Management System) BMS circuit. This monitors charging and discharging. The charge data is transferred from here to the drone motherboard.
Without this circuit, the drone has no information about the battery and thus does not even take off because it is not safe.
Gipsz,

Thanks, yeah, I figured there is a need for a BMS and was wondering if I could possibly make one. I dug around in my battery waste bin after posting this and was excited to find that I have not yet thrown away the bad battery. I don't know if the board with the BMS on it is still functional but I might solder it to my new batter and see if that works.

If you (or anyone) has any other ideas they will be most appreciated.

Kokorodrone
 

Latest threads

Members online

Forum statistics

Threads
4,295
Messages
39,161
Members
5,807
Latest member
Sandraccio