Impedance battery pack Vectrix baseline for future testing
Has anyone measured the impedance of the battery pack and individual cell impedance recorded both charge and discharge state figures , preferably after a extended cooling period ( 25C ambient)
Interested in the individual cell readings,not the total pack reading divided by the # of cells , but actual cell readings averaged out .
Taking the sum of all 102 cells and averaging them out , also love to know the inter-cel connections , next interesting figure is the average deviation of both .
Anyone willing to do or allowing me to this,please contact me,I am in CT 06478 Oxford would travel up to 150 miles round trip with my equipment a HP4338B to perform the measurement no charge!, we will both learn a lot and the benefit would be share by all on this site.
I have 2 Oxygen Lepton scooter with 2,000 miles on it,it has a Ni-Zc pack 48 volt 30A/H measured with measured 65 mho total with cells and interconnect,the cells average about 2.15 mho/cell, have some as low as 1.85 mho.
Getting the readings from real actual used battery on a Vectrix would be helpful to all the owners and could serve to establish a baseline for monitoring the batteries aging and deterioration .
What a great offer!
Let me know in case you come to Australia...
I need to plan this a bit because I do not want the Vectux off the road for too long and have lots of other things to do.
But I am very interested!
How can I determine the correct torque needed to put the cells back together?
I guess it's time for me to buy a new multimeter, then...
What kind of DMM do I need to check the battery and anything that will need answering later on in the Vectux saga?
I assume that I can use my torque wrench to undo the nuts; the torque needed to undo them would probably be a little higher than the torque used to tighten them originally.