How long they will take to charge depends on the rating of the batteries (venom make several different ratings). The way to figure it out is to divide the mah (milliamp hour) rating by 1000 to get the amp rating then divide that by the charge rate. (For example a 3000 MAH battery = a 3 amp hour battery - divide that by 2 amps per hour and it should take an hour and a half to charge.)

The new P2K's have the caps (the little tan things I described in the previous post - look for them - if you just got the motor it probably has them) but the old ones don't (mine didn't have them but they are 2+ years old). The Reedy already has them too.

As far as gearing up what that means is taking off the gear that is on the motor and putting on one with more teeth. I copied the following from my ealier post in this thread (third from the top) - if you need more clarification let me know. Make sure you don't set the gear mesh too tight - there should be just a little play between the pinion gear and the spur gear. One post I saw had a good idea in it - stick a couple of strips of paper between the pinion and the spur, push it in tight and tighten the motor in, then pull them out. (If I could remember who wrote that advice I'd credit you - soory for my defective memory.)

When I said push in tight I meant to push the pinion (the metal gear on the motor) sideways against the Spur gear (the plastic gear on the truck). Just snug is all it needs to be - you don't want the motor shaft or the plastic gear to flex when you push. I've never worked on a T4 so I'm not sure how the spacing adjustment works but the Team Associated website has the manuals online if you don't have the originals so you can look at the instructions and an exploded drawing of the truck there. you should be able to just barely move the spur gear (the big plastic one) back and forth without the spur gear moving. If you set the mesh too tight the gears will run noisy and the motor will get hot. It's not the end of the world if you get it too tight the first time - just adjust it again until you get it right. Just don't run for extended periods and burn up the motor that way. If you set it too loose you could strip the spur gear - I'm making this sound harder than it is - sorry - but in reality you've got a fair chunk of leeway.

I do tend to get a bit wordy, don't I? Maybe I should write a book (oh, wait, been there - done that - didn't get it published).