I just purchased a P4P through craigslist from some guy. The drone is in amazing condition and I got 1 battery with it. I already had the P4P+ but lost the drone(so I still have 2x of my old batteries)
Anyways, the battery they gave me was dead. The light wouldn't turn on when pressing the button. I searched and searched and found out this basically happens when the battery is left in storage too long. I am assuming they left the battery on low charge and it just slowly drained to this critical level where it doesn't even charge. I left it on the charger for about 3 hours with no change. I know my charger works cause my other 2 batteries charged up fine.
So me being the wanna tear everything apart kinda person decided to disassemble the battery. I put my multimeter on the two main terminals on the board and get a voltage of ~2.8. I am assuming this is bad because the battery should be 15+ if I am correct. I tested each individual cell and I got roughly ~0.75 on 3 cells and ~0.35 on one cell. I disconnected what I assume is the balancer cable(or at least thats what other posts referenced it as) and put it to charge. Surprisingly I am actually getting the cells to slowly raise in voltage. I will be closely monitoring this and making sure I don't exceed 3.5v on a single cell, plus I don't want to burn my house down.
I saw a video of someone taking it apart and replacing a chip, that is way to complicated and I don't trust myself so I'd rather just buy a new one. Even if I manage to fix this, it might take a couple dozen test low altitude flights before I trust this battery for a real flight.
Anyone else had this issue? If so what did you do to fix it?
Anyways, the battery they gave me was dead. The light wouldn't turn on when pressing the button. I searched and searched and found out this basically happens when the battery is left in storage too long. I am assuming they left the battery on low charge and it just slowly drained to this critical level where it doesn't even charge. I left it on the charger for about 3 hours with no change. I know my charger works cause my other 2 batteries charged up fine.
So me being the wanna tear everything apart kinda person decided to disassemble the battery. I put my multimeter on the two main terminals on the board and get a voltage of ~2.8. I am assuming this is bad because the battery should be 15+ if I am correct. I tested each individual cell and I got roughly ~0.75 on 3 cells and ~0.35 on one cell. I disconnected what I assume is the balancer cable(or at least thats what other posts referenced it as) and put it to charge. Surprisingly I am actually getting the cells to slowly raise in voltage. I will be closely monitoring this and making sure I don't exceed 3.5v on a single cell, plus I don't want to burn my house down.
I saw a video of someone taking it apart and replacing a chip, that is way to complicated and I don't trust myself so I'd rather just buy a new one. Even if I manage to fix this, it might take a couple dozen test low altitude flights before I trust this battery for a real flight.
Anyone else had this issue? If so what did you do to fix it?