My 6 year old son got a Extreme Machines "Thunder XX" RC truck from Costco for his birthday last week. For only $40, I think it's actually pretty cool. I'd say it's full 1:10 size and has a hobby-style removeable body, except that the antenna is taped to the underside of the body, so you can't take it off without removing that tape first.
I know from other threads that there was a "Thunder XX" and a "Raptor XX" that Extreme Machines previously made, but this is NOT those, it just shares the same body. There's nothing even pretending to be hobby-grade about this, other than the body. The tires are rubber, semi-pneumatic, but the rubber is really too hard to flex under the weight of the toy or really bite into much. However, it does have 4wd and nice (for the price) soft independent suspension and seems fairly durable. Also, it will make it across my entire front lawn, albeit slowly, as long as you hit the grass rolling and keep it pegged and don't stop and will climb around on rocks and what not pretty well for what it is.
The battery pack that came with it is a 700mah NiCd 9.6v (flat-8 AA type) pack with a molex connector on it. I was thinking of trying to get a better battery pack, something more like 2000mah NiMH. The LHS said they had nothing.
I've found some battery packs from Tenergy and "Winner's Circle" that look like the ticket. Just wondering if these Winner's Circle packs are any good. Does anyone know? The price on them is much better than the Tenergy packs I see on eBay and elsewhere.
Here are the Winner's Circle batteries on eBay, the price is definitely right, if they don't suck:
Also, if this is a good idea, I was wondering if anyone makes a similar-sized pack (has to fit in the compartment, which has a little room to spare) that is like a 9 AA pack or something... just to give it a little more voltage/power. I really don't want to damage or mod this toy truck (at least until something breaks on it's own), but if I could up the torque just a little with a slightly beefier battery, my son would be very happy being able to make it up bigger hills and whatnot. Maybe this is a bad idea. Maybe another 1.5v is enough to fry something in these cheap toy RCs... that's why I ask the hive mind for input.
I bought a Thunder AC680 for using with my Pede batteries and thought I'd just use it for these as well. I only mention that in passing, just in case that might affect someone's suggestion as to what I should do for a battery pack.