The TRX-4 is designed to run primarily on a 2S LiPo or NiMH battery (7.4V or 7.2V). For most drivers, a 2S setup offers the best balance of torque, control, and runtime; 3S is not officially supported on stock electronics and should only be considered with proper upgrades.
Voltage and chemistry compatibility
The Traxxas TRX-4’s Electronics Speed Control (ESC) and drivetrain are optimized for 2S operation. NiMH packs are a reliable alternative to LiPo, though they are heavier and offer less energy density. Some builders experiment with 3S LiPo packs, but this typically requires upgraded ESCs, motors, and cooling, and is not part of the stock configuration.
2S LiPo packs (7.4V)
This is the standard choice for most TRX-4 setups. Common capacities range from about 2000mAh to 5000mAh (and occasionally higher for extended runs). LiPo packs deliver strong torque and good run time while keeping weight relatively balanced for crawler performance. Always ensure the pack fits the battery cavity and does not interfere with drivetrain or body clearance.
2S NiMH packs (7.2V)
NiMH is a traditional and budget-friendly alternative. They are heavier than LiPos and offer lower energy density, but are robust and easy to use. Typical capacities span roughly 3000mAh to 6000mAh. NiMH packs can be a convenient option for beginners or for those not needing the extra peak power of LiPos.
3S LiPo packs (11.1V) — caution
Using a 3S LiPo on stock TRX-4 electronics is generally not recommended due to potential heat and component stress. Some enthusiasts upgrade to higher-capacity or more robust ESCs and motors to handle 3S, along with careful gearing and cooling. If you pursue this, consult your manual for maximum voltage limits and ensure proper setup and monitoring.
Practical considerations for capacity, fit and balance
When choosing a battery, consider how the weight affects handling on rocks and obstacles. Heavier packs can improve traction but raise the vehicle’s center of gravity, increasing the risk of tipping on steep climbs. Measure the physical dimensions of the pack to ensure it fits the battery compartment without cramping the chassis or contacting moving parts. Also verify connector compatibility with your ESC and charger, as Traxxas and third-party packs may use different plug types.
Summary
For most TRX-4 configurations, the recommended battery is a 2S LiPo or NiMH pack, with 2S LiPo offering the best combination of performance and efficiency. 3S is possible only with appropriate upgrades and should be approached cautiously. Always refer to the specific model’s manual to confirm exact battery compatibility and fit for your TRX-4 variant.
What size is a C4 battery?
C Batteries Size
They are: 50mm or 1.97 inches in length. 26.2mm or 1.03 inches in diameter.
What kind of battery does the TRX-4 use?
We recommend a higher voltage battery for the TRX-4. You could use an 8.4V NiMH battery or a 7.4V 2-cell LiPo or an 11.1V 3-cell LiPo.
What kind of battery is in a CFMOTO?
LEAD ACID
CFMOTO CFORCE/ZFORCE/UFORCE Battery Replacement 400CCA (BIX30L)
| PRODUCT NAME | BATTERY |
|---|---|
| BATTERY CHEMISTRY | LEAD ACID |
| VOLTS | 12 V |
| BATTERY CAPACITY | 30 AH |
| BATTERY MAXIMUM CHARGE RATE | 3 A |
Does the Traxxas TRX-4 come with a battery?
If you want to dive deeper into voltage capacity and choosing the right battery check out traxxas.com/battery. Basics we recommend using 3S batteries for top speed.