because trickle charge over USB takes a long time, i am looking around my appt. for a surrogate charger. I got my PDA (Zire 31) secondhand without the wall charger, just the sync cable. on the back of the PDA it says 5.2v DC/MAX 500mA the charger from my cellphone fits the jack perfectly on the PDA (barrel plug) and it says on it 5.2v 800mA now if i was to connect the two and plug into the wall will my PDA charge or will it fry? due to the differing mA? or does the pda just draw the mA that it needs?