There are some ways to check health of recycled batteries.charging and discharging for several times is one of them you can also check batteries by measuring their internal resistance.but i guess it needs lots of research worksI bought an EnerDel battery pack left over from the Think Car fiasco. I guess these batteries are about ten years old.
With my car build, taking the batteries in and out is a real pain in the ass. And would like to do it only once but I know that is not a reality.
The EnerDel packs are very neat in that they can be configured in a lot of ways. The battery terminals can be switched from right to left or top to bottom or any combination thereof.
Right now as I bought the blocks the cells are 12s/2p for about 50 volts. I'm going to take the blocks down to 25 volts by going 6s/4p.
While the blocks are apart and down to the individual cell I would like to cycle them 2 or 3 times to see how healthy they are. Looking at the internet there are lots of chargers/dischargers for the R/C world that are close to the right voltage but not just right.
Does anyone have a good idea? I would like to keep it simple. Just one device would be nice if it could charge/discharge and keep track of amp-hour.
From what I can find the voltage is 4.1 down to 2.5 Is this correct?
It depends to the battery some operates from 3.6 to 4.1 some in 3.7 to 4.2 range.
And also with testing you will not get real capacity of battery.because it has no real specified capacity it has maximum,minimum and nominal capacity which is related to charging rate discharging rate temperature,......