D
Deleted member 120647
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Ok I like fixing problems especially when they are not 'fatal' to the drone
I have a dead P3 battery, it arrived like this, it will not charge and it will not switch on. I have tried various button pressing resets to no avail. I am guessing it has, either deliberately or through lack of care, been over discharged to too low a voltage .
I opened the battery and what you end up with is a block of cells wrapped in a metal shield, a 'suspended' circuit board is attached to the "block of cells".
A multi strand cable runs from the "block of cells" to the circuit board as do +ve & -ve high current (HC) cables, I assume there must be some sort of circuitry inside the "block of cells" for the multistrand cable to connect to. The metal shield is also connected to this circuit board, via its own wire.
A second pair of HC cables run from this board to the drone/charger connector.
I disconnected the multistrand cable and connected a charger to the HC terminals atop the block of cells. I had the 'battery' inside a deep stainless steel saucepan in case any thing went wrong. It seems to have taken a charge, 17+V, but still will not switch on.
I suspect that something in the "suspended circuit board" (SCB) needs resetting and have seen mention of this, in connection with drone batteries, on the web and it seems that this is done by disconnecting the multistrand cable from the SCB. There is a good thread concerning this and an Inspire 1 battery on another forum. However it appears that there are only 2 HC cables running to the SCB in an Inspire battery and I suspect that this means that there is no voltage ANYWHERE on the Inspire's SCB when its multistrand cable is disconnected.
The 4 HC cables running to the P3's SCB suggest to me that some part of the P3's SCB will 'always' see the battery voltage and I am wondering if, aside from disconnecting the multistrand cable, I will also have to disconnect one of the HC cables coming from the battery block it order to attempt a reset...........does anyone know ?.
I think the green staining in the attached photos is just a green coloured varnish
I have a dead P3 battery, it arrived like this, it will not charge and it will not switch on. I have tried various button pressing resets to no avail. I am guessing it has, either deliberately or through lack of care, been over discharged to too low a voltage .
I opened the battery and what you end up with is a block of cells wrapped in a metal shield, a 'suspended' circuit board is attached to the "block of cells".
A multi strand cable runs from the "block of cells" to the circuit board as do +ve & -ve high current (HC) cables, I assume there must be some sort of circuitry inside the "block of cells" for the multistrand cable to connect to. The metal shield is also connected to this circuit board, via its own wire.
A second pair of HC cables run from this board to the drone/charger connector.
I disconnected the multistrand cable and connected a charger to the HC terminals atop the block of cells. I had the 'battery' inside a deep stainless steel saucepan in case any thing went wrong. It seems to have taken a charge, 17+V, but still will not switch on.
I suspect that something in the "suspended circuit board" (SCB) needs resetting and have seen mention of this, in connection with drone batteries, on the web and it seems that this is done by disconnecting the multistrand cable from the SCB. There is a good thread concerning this and an Inspire 1 battery on another forum. However it appears that there are only 2 HC cables running to the SCB in an Inspire battery and I suspect that this means that there is no voltage ANYWHERE on the Inspire's SCB when its multistrand cable is disconnected.
The 4 HC cables running to the P3's SCB suggest to me that some part of the P3's SCB will 'always' see the battery voltage and I am wondering if, aside from disconnecting the multistrand cable, I will also have to disconnect one of the HC cables coming from the battery block it order to attempt a reset...........does anyone know ?.
I think the green staining in the attached photos is just a green coloured varnish
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