Zeee 3S Lipo Battery 7000mAh 11.1V 100C Soft Pack RC Battery EC5 Connector with Metal Plates for RC Car Truck Tank Racing Models

This battery just goes on and on and on, with great power. I thought it would be overkill for my SCX III 1/10 scale, but it ended up being the extra weight I needed to actually get traction with ProLine dual-stage foams, which are designed for competition trucks with weight down low in heavy axles, etc. Mounting the battery across the driver/passenger area just behind the front axle kept the balance for climbing, too. Awesome upgrade when you want all-day power, for less. If your truck is already heavy enough for good traction and you don't want to see your side-hilling capability be too affected by the extra weight, then buy smaller or competition-specific how-power with low-weight batteries. In fact, do that especially for your mini-crawler where power/weight ratio is much more important!