Cell/battery Lifetime/degradation Auto-Tester. The idea is to to have an appropriate charger powered on and 'connected' via a voltage sensitive switch. Ditto for a load. The concept would be to start with a fully charged battery (or probably better, cell). Starting the test would activate the load switch which would stay locked until a predetermined low voltage is reached. At that point the 'monitor' would deactiveate the load switch and activate the charger switch to begin a charging cycle.
Once the high voltage disconnect is reached, the charger would be switched off, and the load switched on. 1 full cycle.
Preferably, the auto-tester would be monitoring power in and out during the cycle.
Even more preferably, it would be logging that data. An event would be defined as charger switch activation (charge run) and Load switch activation (Discharge run) (or vice-verse, depending on POV). so the log would look something like:
Date | time | Volts | Watts (since last event)
2020-07-01 | 0041 | 3.28 | unk
2020-07-01 | 0101 | 2.80 | 97
2020-07-01 | 0116 | 3.28 | 99
...
this would allow fairly rapid and consistent cell cycling and analysis' especially if only one cell was done at a time, limiting the amount of power cycled in each test.
oh... and probably cell and ambient temperatures.
Given a setup, start it and come back in a couple weeks to see, at least in early cycles, how much a cell (and thus pack of cells) degrade over usage.
Once the high voltage disconnect is reached, the charger would be switched off, and the load switched on. 1 full cycle.
Preferably, the auto-tester would be monitoring power in and out during the cycle.
Even more preferably, it would be logging that data. An event would be defined as charger switch activation (charge run) and Load switch activation (Discharge run) (or vice-verse, depending on POV). so the log would look something like:
Date | time | Volts | Watts (since last event)
2020-07-01 | 0041 | 3.28 | unk
2020-07-01 | 0101 | 2.80 | 97
2020-07-01 | 0116 | 3.28 | 99
...
this would allow fairly rapid and consistent cell cycling and analysis' especially if only one cell was done at a time, limiting the amount of power cycled in each test.
oh... and probably cell and ambient temperatures.
Given a setup, start it and come back in a couple weeks to see, at least in early cycles, how much a cell (and thus pack of cells) degrade over usage.