hi bros....errmmm, i dunno whether this is the right place to ask but recently i bought myself a R/C heli that comes with a stock batt 7.4V 850maH, the thing is the batt really s*cks big time, i mean the flight time can't last long, so my question is can i upgrade it to higher rating batt like 7.4v 1000mah?can my heli's rotor handle the batt output?hopefully somone here can enlighten me..thanks