15AMP or 20AMP

I have seen Power Supply Units 200WATT with 15 AMP and others with 20 AMP (do not know the WATTAGE with the 20 AMP one), what difference would the extra 5 AMP make?

SOOOO much to learn.

[glen_j]

that extra 5 amps in theory would allow you to charge either more lipos or larger lipos faster depending on what charger you have, i'd just go for the 20amp psu

[Milamber]

Using Ohms Law, Power = Voltage x Current.

By Substitution, Voltage = Power / Current, therefore:

Voltage = 200 / 15 = 13.33 [recurring] Volts.


Using 13.333 volts as the reference, for the 20A PSU,

Power = 13.333 x 20 = 266.66 [recurring] Watts.

Can your charger offer a charge rate equivalent to 266 Watts ??


Hope this helps your decision.


Maurice.