I have one of their 1400 packs in my revo. Running 2 Jr650 servos in it, after a tank and a half the truck does absolutely nothing. No twitching, no movement at all. Did the same thing yesterday, but when I charge I can only get about 600mah into it. Has anybody else used these, or seen or heard of similar problems? Do you think if I contact MaxAmps they might replace it? Thanks.

I have the same 1400 mAh pack...works just fine. Maybe you have a bum cell or two.

Make sure you have your millivolt setting around 8 or 9 on your charger

Aight well the charger went off and it put 160mah into it! so I'm trying what kyle said and bumped the mv/cell up to 8. We'll see.

Well I started the pack right before I posted that. It's put another 45mah into it!? IDK for now though I'm going back to the traxxas pack.

The pack must be crap....I charged and ran my stock pack and it's still got s**tloads of power left after a tank.