What's their AC impedance like? If you don't mind sharing.
The PURE-DC-4EVR power supply board of the LIO is super-low AC impedance as well - and it took some clever engineering (time,
money, blood, sweat, tears, and did I mention TIME?) to get it so good! Something that has been in the works for a while...
Specific details of the Ultracapacitor circuit (e.g. our impedance graphs, schematics, info on the bypass caps, balancing, cap charging circuit, etc) will not be disclosed - for hopefully obvious reasons.
Thanks for your understanding,