The Traxxas XRT is an extreme 8s power and speed large RC truck with two non-adjustable battery trays, each measuring 186mm x 51mm x 44mm. On the market, there are lipo batteries specifically designed for these 1/5 scale RC trucks to replace the stock batteries. These batteries have dimensions, capacity, and power that are perfectly suited for the XRT.
Best Performance Battery

Gens ace 11000mAh 4S 100C 14.8V Lipo with EC5 Connector
Brand: Gens ace
Voltage: 14.8V
Capacity: 11000mAh
Discharge Rate: 100C
Connector: EC5
Size: 180 x 51 x 52 mm
Weight: 947g
Highlight: Long Run Time | Balanced Cells | Low IR | Hardcase
When it comes to performance, Gensace all day!!! A reddit RC enthusiast said: “Whether for racing or casual bashing, Gensace lipos deliver exactly what you need.” I 100% agree!!! Compared to other lipos, the cells in these batts are more balanced, with voltage gaps of just a few mV. This means no voltage sag even during extended hard pulls on the trigger, ensuring consistent power delivery.
Another point worth noting is that its specs are slightly better than most other lipos, and based on my years of experience, the mah and C rate are not exaggerated like with some other brands.
BTW, it’s also suuuper durable, it survived abuse, including being over discharged twice. I was able to bring it back to life by charging in balance mode, and even after 2 years, its performance hasn’t degraded over time.
Best Overall Battery

Zeee 4S 10000mAh 120C 14.8V Lipo Battery with EC5 Connector
Brand: Zeee
Voltage: 14.8V
Capacity: 10000mAh
Discharge Rate: 120C
Connector: EC5 Connector
Size: 169 x 48 x 42mm
Weight: 713g
Highlight: High Power | Long Run Time | Stable
After comparing numerous 4S LiPos, I found that 10,000mah is currently the popular mah for the XRT. Compared to the stock batteries, this one not only extends run time by 50% but also delivers significantly higher punch.
This ZEEE battery features a 10AWG discharge wire gauge, capable of continuously handling over 140A of output current, providing a steady current supply to the XRT’s motor. You can drive at high speeds without interruption, with rapid acceleration, making jumps hills effortless. Even during prolonged, high-intensity use, the battery remains cool, indicating excellent IR.
Best Budgeted Battery

Socokin 10000mAh 4S 14.8V 120C Lipo with EC5 Connector
Brand: Socokin
Voltage: 14.8V
Capacity: 10000mAh
Discharge Rate: 120C
Connector: EC5
Size: 169 x 48 x 42 mm
Weight: 713g
Highlight: Long Run Time | Long Battery Life | Stable
Compared to stock, this one is not only budget but also extends run time by about 50% and significantly enhances the XRT’s bashing performance. I noticed a clear improvement in throttle response and steering speed on the XRT. Whether for casual bashing or hard bashing, this lipo consistently delivers impressive wattage, making it stand out.