Here are the results from the last three discharge cycles on our test cell. This takes us to a 55A load. As you can see from the charts posted so far, power delivery and voltage drop is consistent and predictable.
We've varied charge between a single 2A charger up to 5x chargers for a 10A initial charge rate. The only difference was charge time.
One nice feature of the 500W CBA amplifier is that we can turn the amplifier off and on during a test. This will allow us to simulate 'pulse and glide' power delivery and show voltage recovery during the 'glide' times. It will also allow us to discharge a cell to 2.1V at higher rates without overheating the cell.
End of test cell temperature is staring to come up. We've gotten to 47ºC at the end of the 55A test. Cooling starts immediately once the load comes off and contunes to ambient - even when the warm cell is connected to a 10A charge.
Stay tuned while we decide if a 10C (100A) pulse is enough to get the boss out of the office...
Posts
