Hi guys,
As some of you may know I have got a second hand TH with two swollen batteries. One of them is kind of puffed much more than the other and I am trying to discharge it using a DC motor. I tried to puncture it laying it in a metal fire pit from a distance but I could only pierce top black(plastic or paper). It leaked a bit of something.. really a tiny bit.. more like a drop. since nothing happened like a fire burst or anything I got read of the idea to puncture it and I am not using a DC motor from multitool to discharge it. I would expect it to discharge in 2-3 hours but it run that much yesterday and about 2 hours today but it still have about 11V.
The second one though is less puffed and after checking each cell voltage I am realising that the battery is actually seems to be ok and well balanced... 3 cells voltage is showing as 4.09V and only one shows 4.10V I guess we can call it balanced. Now I am thinking may be destroying one battery should be enough. The previous owner has warned me that one is puffed. However he did mention nothing about the second slightly puffed, he also said he used both batteries for flying.
am I risking much using a slightly swollen battery in my drone? Can gases escape for some reason and just puff the top layer but a battery can be good at the same time?
It is a bit harder to insert it into the drone comparing with a new battery I have as a battery hole side scratching that black layer a bit but on the other one both sides already have removed a lot of black colour from that layer. So it seems it has been used by the previous owner a lot.
I know about salt water disposal but first there is another opinion about this method and it does not present it as a save method to dispose it. However I am not using salt water now for the that battery because of that opinion. I simply trying to discharge it a much as possible before I put it in salt water.
As some of you may know I have got a second hand TH with two swollen batteries. One of them is kind of puffed much more than the other and I am trying to discharge it using a DC motor. I tried to puncture it laying it in a metal fire pit from a distance but I could only pierce top black(plastic or paper). It leaked a bit of something.. really a tiny bit.. more like a drop. since nothing happened like a fire burst or anything I got read of the idea to puncture it and I am not using a DC motor from multitool to discharge it. I would expect it to discharge in 2-3 hours but it run that much yesterday and about 2 hours today but it still have about 11V.
The second one though is less puffed and after checking each cell voltage I am realising that the battery is actually seems to be ok and well balanced... 3 cells voltage is showing as 4.09V and only one shows 4.10V I guess we can call it balanced. Now I am thinking may be destroying one battery should be enough. The previous owner has warned me that one is puffed. However he did mention nothing about the second slightly puffed, he also said he used both batteries for flying.
am I risking much using a slightly swollen battery in my drone? Can gases escape for some reason and just puff the top layer but a battery can be good at the same time?
It is a bit harder to insert it into the drone comparing with a new battery I have as a battery hole side scratching that black layer a bit but on the other one both sides already have removed a lot of black colour from that layer. So it seems it has been used by the previous owner a lot.
I know about salt water disposal but first there is another opinion about this method and it does not present it as a save method to dispose it. However I am not using salt water now for the that battery because of that opinion. I simply trying to discharge it a much as possible before I put it in salt water.