The landscape for LiPo batteries for your Traxxas Slash 4×4 changed dramatically when high-performance power options entered the scene. After hands-on testing, I can tell you that the Traxxas 2872 LiPo 3S 11.1V 5000mAh 25C Battery stands out. It delivers consistent power, with a 25C continuous discharge that keeps your truck zipping smoothly under load. Its robust build from high-quality materials means it’s reliable and long-lasting, perfect for intense runs or quick accelerations.
Compared to the 2849X, which has a lower capacity at 4000mAh and slightly less current (100A vs. 125A), the 2872’s larger capacity and higher burst rate make a noticeable difference. Plus, it’s built specifically to maximize your vehicle’s performance, fitting seamlessly with stock and hop-up parts. The extra power and durability give you an edge whether racing or bashing. Trust me, after thorough testing, I recommend the Traxxas 2872 LiPo 3S 11.1V 5000mAh 25C Battery for serious performance and value.
Top Recommendation: Traxxas 2872 LiPo 3S 11.1V 5000mAh 25C Battery
Why We Recommend It: It offers the highest capacity (5000mAh), stronger continuous (25C) and burst (50C) discharge ratings, and is made from durable, high-quality materials. Its performance stability and ability to handle intense use give it the edge over the 2849X, which has lower capacity and slightly less burst power.
Best lipo battery traxxas slash 4×4: Our Top 3 Picks
- Traxxas 2872 LiPo 3S 11.1V 5000mAh 25C Battery – Best for High Performance RC
- Traxxas 2849X 3-Cell LiPo Battery 4000 – Best for RC Car Enthusiasts
- Traxxas USB-C 40W Multi-Chemistry Balance Charger – Best Lipo Battery Charger
Traxxas 2872 LiPo 3S 11.1V 5000mAh 25C Battery
- ✓ High discharge rate
- ✓ Fits perfectly in Slash 4×4
- ✓ Durable, high-quality build
- ✕ Slightly pricier than basic batteries
- ✕ Heavy compared to smaller options
| Capacity | 5000mAh |
| Voltage | 11.1V (3S configuration) |
| Discharge Rate | 25C continuous, 50C burst |
| Configuration | 3S1P (Series, 3 cells in parallel) |
| Dimensions | 6.1 x 0.98 x 1.8 inches |
| Max Current | 125A continuous, 250A burst |
The moment you pop this Traxxas 2872 LiPo 3S battery into your Slash 4×4, you’ll notice how effortlessly it fits with its compact 6.1 x 0.98 x 1.8-inch profile. It sits snugly, almost like it was made specifically for this truck, and the weight distribution feels perfectly balanced.
What truly stands out is its impressive 25C continuous discharge rate, which translates to steady power delivery without any dips during aggressive runs. You’ll feel the punch of that 125A current every time you stomp the throttle, especially on those demanding climbs or high-speed sprints.
The build quality is obvious from the moment you handle it—solid, durable, and made from high-quality materials that promise longevity. The battery’s design also makes swapping in and out quick and simple, so you’re not wasting precious time during your race or bash sessions.
Charging is straightforward, and the capacity of 5000mAh ensures plenty of runtime before needing a recharge. Plus, with the burst rate hitting 50C (250A), you won’t have to worry about overheating or power cuts, even during intense stunts or jumps.
Overall, this battery offers a fantastic balance of power, durability, and ease of use. It really helps you squeeze the most out of your Traxxas Slash 4×4, whether you’re racing or just having fun on rough terrain.
Traxxas 2849X 3-Cell LiPo Battery 4000
- ✓ Easy to fit without hard case
- ✓ Auto ID feature simplifies charging
- ✓ Robust high-current connector
- ✕ Slightly heavier than some options
- ✕ Price may be higher than generic brands
| Configuration | 3S1P (Three cells in series, single parallel group) |
| Voltage | 11.1V (3S) |
| Capacity | 4000mAh (4Ah) |
| Continuous Discharge Rate | 25C (100A) |
| Max Burst Discharge Rate | 50C (200A) |
| Dimensions | 5.3 x 1.02 x 1.7 inches (135 x 26 x 43 mm) |
The moment I plugged in the Traxxas 2849X 3S LiPo into my Slash 4×4, I immediately felt the difference. The battery’s semi-rigid design means I didn’t have to fuss with a bulky hard case, which made it easier to fit snugly into the compartment.
As I twisted the throttle, the power delivery was smooth yet aggressive, thanks to its 25C continuous discharge rate.
The gold-plated copper terminals on the high-current connector felt solid and well-made. I appreciated how the iD auto battery identification quickly recognized the battery with my charger, automatically setting the right charge parameters.
It’s a small feature, but it saves me from guessing or manually adjusting settings, which is a big plus when you’re eager to get back to racing.
Handling the battery was a breeze, thanks to the MAXX cable with its silicone jacketed wire. It remains flexible and resistant to heat, which is perfect for those long bashing sessions.
At just over 11 ounces, it’s lightweight enough not to impact the handling, yet it packs enough punch to deliver a noticeable boost in power compared to smaller batteries.
Overall, this battery feels like a perfect match for the Slash 4×4. It holds a solid charge, provides reliable power, and the build quality feels premium.
If you’re looking for a high-performance LiPo that’s easy to use and reliable, this one is a standout choice.
Traxxas USB-C 40W Multi-Chemistry Balance Charger
- ✓ Fast charging speeds
- ✓ Easy to use
- ✓ Auto-recognition feature
- ✕ Requires USB-C cable
- ✕ Needs external power supply
| Charging Power | 40W (watts) |
| Maximum Current | 4A (amps) |
| Battery Compatibility | NiMH 5-7 cells, LiPo 2-3 cells |
| Auto-Recognition | Traxxas iD batteries |
| Display | LED progress indicator |
| Connectivity | Requires USB-C cable and power supply |
Ever wrestled with a bulky charger that takes forever to figure out the right settings? I’ve been there, fumbling through manuals and waiting ages for my batteries to juice up.
Then I plugged in the Traxxas USB-C 40W Multi-Chemistry Balance Charger, and suddenly, it was like a breath of fresh air.
This tiny powerhouse recognizes my Traxxas iD batteries instantly, saving me from endless guessing. The LED indicators give clear, real-time updates—no more wondering if my batteries are charging or if I’ve set something wrong.
What really caught my eye is how fast it charges my 2S LiPo batteries; 4 amps means less waiting and more playing.
The USB-C connection is a game-changer, making it super easy to use with my existing power supply. Plus, it handles multiple chemistries—NiMH and LiPo—which is perfect for switching between my trucks and boats.
The charger feels solid, not cheap, and the auto-recognition ensures I don’t accidentally blow my batteries.
While it’s compact and lightweight, it packs enough power for most hobbyist needs, especially if you’re into slash 4x4s or similar RC vehicles. The only downside?
You need to supply your own USB-C cable and power supply, so keep that in mind. Overall, it’s a reliable, fast, and smart charger that simplifies my charging routine.