Power supplies

[RobW]

Thinking about replacing my 20 year old power supply. It is still working ok but starting to get a bit noisy so rather replace before it fails at a meeting.

Current one is only 10amps output which does not really pose a problem as I currently charge at 1C so max I need is 7.2amps for my 7200mah 1S i use in my GT12. Use a lower rate for 1/10th off road.

Only thought is new chargers seem to be coming onto market with 30/40A outputs and many new lipos seem to be able to be charged at 4/5C. So if I want to future proof myself a bit, what is the maths involved? Is it as simple as needing a 40A power supply to power a 40A charger IF I ever wanted to use the charger to its full capabilty in some time in the future or do you need more to cope with inefficiencies in supply and charger or does it depend on number of cells?

Any advise on the maths or recommendations on power supplies appreciated.

Rob