the 4s in parallel: is 20c (20) 3000mah (3) will get you 60 amps (20 x 3) and your amps will increase to 120 with two such batts in parallel.
we need to know the "c" rating of the 2s to speculate........
edit: if the 2s is 20c than amp ratings will be the same. so you have 120 amps (120) times 14.8 volts (14.8) gets you 1776 watts (120 x 14.8) worth of power, or 2.39 hp (1776w / 743w) 1hp=743w
A 2.39hp Revo should scoot right along...
Thanks Harold for the technical data
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S
np. Linc makes a good point about the charging. When I charge batts in parallel, I hook up the charger's balancer to pack a, and a astroflight blinky in pack b, and alternate pack a and b every other charge.
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It's "Dr. _paralyzed_" actually. Not like with a PhD, but Doctor like in Dr. Pepper.
remember you will need a motor capable of that, all the battery is doing is having the power available for the motor to use and its up to the motors design as to how much power it will be drawing