Mdd0127 donated these to me, after having some terrible luck in shipping and whatnot in buying them originally some time back.
View attachment 11
One six-cell pack has obvious physical damage
and a dead cell (which is NOT one of the damaged ones!), and the other has just a dead cell. The two 5-cell packs don't have anything instantly apparent, but may have problems later.
The end result idea is to make a small pack that can be used for 80V 5Ah or 40V 10Ah, for various smaller/lighter bike experiments.
Tonite there was only time to measure cells, take pics, and make this thread. Later will come pack surgery to remove the dead cells, and then cycling them to determine actual capacity, etc.
Using this little cell meter donated to me by Methods a long time back,
I did a quick check of each pack via the balance connectors, which will be numbered in the order pictured, from now on:
Note that the Maxpro meter doesn't read properly sometimes, so while it's good for a quick check I don't really trust it. For instance, it shows only three cells on one pack, but that is because the fourth cell is dead, so it ignores everything above that, and also shows total pack voltage for only those three, not the real total. On another pack the total voltage shows way too high for the cells taht are present.
1:
2:
3:
4:
So for real cell-level measurements I used this more trustworthy meter
that Methods sent along with some of those LVC/HVC boards
which will be used to alert me while using the packs in testing on the road.
Voltages are listed from most positive to most negative:
1: 19.05V
0.01
3.83
3.80
3.82
3.79
3.81
2: 18.91V
3.78
3.80
0.01
3.79
3.80
3.79
3: 19.5V
3.88
3.87
3.86
3.88
3.86
4: 19.28V
3.86
3.86
3.85
3.86
3.87
So the cells that still have voltage are all still "good", not crashed low. Further testing needed to find out how good.
Between uses and testing, the LiPo Storage Facility is used:
and I make sure to engage the Anti-LiPo-Ignition Safety Device when they're in there, by removing the knob that lets me turn the oven on.
View attachment 11
One six-cell pack has obvious physical damage
and a dead cell (which is NOT one of the damaged ones!), and the other has just a dead cell. The two 5-cell packs don't have anything instantly apparent, but may have problems later.
The end result idea is to make a small pack that can be used for 80V 5Ah or 40V 10Ah, for various smaller/lighter bike experiments.
Tonite there was only time to measure cells, take pics, and make this thread. Later will come pack surgery to remove the dead cells, and then cycling them to determine actual capacity, etc.
Using this little cell meter donated to me by Methods a long time back,
I did a quick check of each pack via the balance connectors, which will be numbered in the order pictured, from now on:
Note that the Maxpro meter doesn't read properly sometimes, so while it's good for a quick check I don't really trust it. For instance, it shows only three cells on one pack, but that is because the fourth cell is dead, so it ignores everything above that, and also shows total pack voltage for only those three, not the real total. On another pack the total voltage shows way too high for the cells taht are present.
1:
2:
3:
4:
So for real cell-level measurements I used this more trustworthy meter
that Methods sent along with some of those LVC/HVC boards
which will be used to alert me while using the packs in testing on the road.
Voltages are listed from most positive to most negative:
1: 19.05V
0.01
3.83
3.80
3.82
3.79
3.81
2: 18.91V
3.78
3.80
0.01
3.79
3.80
3.79
3: 19.5V
3.88
3.87
3.86
3.88
3.86
4: 19.28V
3.86
3.86
3.85
3.86
3.87
So the cells that still have voltage are all still "good", not crashed low. Further testing needed to find out how good.
Between uses and testing, the LiPo Storage Facility is used:
and I make sure to engage the Anti-LiPo-Ignition Safety Device when they're in there, by removing the knob that lets me turn the oven on.
I forget things so quickly if I don't write them down, make lists, etc. 
