Will a 10 Amp power supply be able to handle 2 chargers

[NSDie]

The title says it all. If I do the math, say, if I charge my batteries at 4 amp for each charger, does it mean that it will draw 8 amps off the power supply and therefore a 10 amp power supply should do the job find.

I would appreciate any input or real life experience from this fine community here.