sleebus,

I've used several maxamps packs. From 2S2P 8Ah 7.4v packs to 3S2P 8Ah 11.1v packs and haven't been disappointed. I haven't had any heat issues with them and the all accepted at least their rated capacity when I charged them. If you look at just the specs of the motor and batteries, the 4S 4Ah pack is capable of an 80A constant load and up 120A for a 30 second sustained burst. The 10L motor is rated at a max amp draw of 60A. I understand that the motor could demand two or three times that in short bursts, but the 4S pack is rated to 200A for short bursts, so it should do just fine.

I'm thinking that the 4S packs are going to be a nice compromise between weight and runtime. I ordered a couple and am going to see how they do in my buggy with the 7XL motor that I have coming.

As I said, I've been using the maxamps batts for a while and have no reason to doubt their ratings. I do have to tell you that maxamps has been really slow lately. They told me that they've been running behind since Christmas. My last order took them eight days to ship, so if you need them quick, you might want to spend a bit more and order it from someone else. I placed my last order on January 18 and still haven't received them yet.

Assuming that you've never had a maxamps pack before, just take note that they come with balancing taps compatible with Hyperion balancers. If you need thunder power compatible taps, you have to pay extra for those. The packs also come wired with 14 gauge wire. Going to 12 gauge is an option at added cost.