Speedo: The numbers that we are seeing from this current date code is 345-373 with voltages of 1.135-1.155. That is using a 0.90 cutoff.
Harshguy: Thanks for the info. It took me 3 weeks of testing to come up with this method which I feel is pretty good.
TSR6: I believe Horizon has them in stock so you can have your loacl dealer or track order some. HRP should also have them in stock. Our part number with Horizon is SUMSVP3006SV with HRP it's SVP3006SV.
KevinK: If you need more voltage out of the Powers you can tray and deadshort them. You can use a 6 amp charge with a .05 peak detect for 6 cells and .03 for 4 cells.