Hello Trung, If you can open the case of the original DJI battery, you can replace the cells with those from another 3s battery.[or fit a complete 3s battery].For charging without the DJI battery circuitry, you will need to be able to access the balance charge connector of your replacement battery.I don't have the genuine dji phantom 2 battery, can someone help me make a lipo battery drone without the dji battery circuit? I beg you to help me
Hello again, Further to my previous reply, I should have added that with replacement 3s battery cells and access to the balance port ,you would now have to charge using a [non DJI] quality balance charger,with clips to the "power" terminals and then connection to the balance plug.I don't have the genuine dji phantom 2 battery, can someone help me make a lipo battery drone without the dji battery circuit? I beg you to help me
It's a 3S battery,irrespective of the number of cells.The pairs are in parallel, and then the 3 parallel pairs are in series,to make it a 3S.The P2 battery reports as having 3 cells but i can say DEFINITIVELY that it actually has 6, 3 pairs of 2. What I dont know for sure is whether or not these "pairs of 2 cells" are in series or parallel and or how the battery control board reports the voltages of the individual cells. Here is what i do know about the P2 battery:
I've had them disassembled many times and there is definitely 6 distinct cells hard wired to the battery control board. Cell 2 (the center 2 cells of the 6) is wired electrically in an opposite polarity when viewed from above compared to the outer 2 cells to the battery control board. The P3 battery has 4 cells and while visually almost identical, its a very different unit in every way and should not be compared in any diagnosis to a P2 battery. So if you want to create a P2 battery using aftermarket cells along with an OEM battery control board I can likely help with a bit more testing.
Not that I'm aware of. The P2 mainboard needs to communicate with the battery control board in order to allow proper start up and flight. I have tried powering the P2 directly with a power supply and I simply got solid red lights on the arms and no other functions.So is there any way to hack it?
Not that I'm aware of. The P2 mainboard needs to communicate with the battery control board in order to allow proper start up and flight. I have tried powering the P2 directly with a power supply and I simply got solid red lights on the arms and no other functions.
If you can add some pictures please.The P2 battery reports as having 3 cells but i can say DEFINITIVELY that it actually has 6, 3 pairs of 2. What I dont know for sure is whether or not these "pairs of 2 cells" are in series or parallel and or how the battery control board reports the voltages of the individual cells. Here is what i do know about the P2 battery:
I've had them disassembled many times and there is definitely 6 distinct cells hard wired to the battery control board. Cell 2 (the center 2 cells of the 6) is wired electrically in an opposite polarity when viewed from above compared to the outer 2 cells to the battery control board. The P3 battery has 4 cells and while visually almost identical, its a very different unit in every way and should not be compared in any diagnosis to a P2 battery. So if you want to create a P2 battery using aftermarket cells along with an OEM battery control board I can likely help with a bit more testing.
Hello Trung, If you can open the case of the original DJI battery, you can replace the cells with those from another 3s battery.[or fit a complete 3s battery].For charging without the DJI battery circuitry, you will need to be able to access the balance charge connector of your replacement battery.
Hi I did this mod and you have to charge your battery using the standard DJI charger through the smart board. The smart board knows how much power has been used and if you charge with a different charger the board will still show the battery as being low on power. Also the p2 battery gauge is calculated on the number of mah used so if you have a 7000 mah battery connected the drone will only use about 5200 mah max as this is the max size of the p2 battery. Hope this makes sense to anyone trying this mod. View attachment 122125
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