RE: Charge voltage question
Hello WLB,
I am not totally sure about the Tenergy cells, but most of those cells are a normal Li-Ion cell with a circuit that reduces the voltage around 0.7 volts. They get their 3.0 volt rating by taking the nominal 3.7 volt Li-Ion rating and drop it by 0.7 volts. If this is the same circuit that is used in the Tenergy cells, the charger has to be set to accommodate this difference in voltage.
A normal Li-Ion cell will be charged to 4.2 volts. The chargers, that I am aware of, used for these "3.0 volt" cells, charge the cell up to 4.6 - 4.9 volts.
You can convert these cells to normal Li-Ion 3.7 volt cells by removing the shrink wrap and circuit at the bottom of the cell. Then you can treat them as a normal Li-Ion cell.
At high current discharges, don't expect long cycle life. I have seen some of these cell loose over 20% of their capacity in as little as 10 cycles at 2C. I am not sure how well the Tenergy cells perform.
Tom