Why Traxxas Maxx Ultimate Owners Swap Batteries
The stock 4S 6700mAh pack gets the truck moving, but many drivers quickly realize they want more. Higher C-ratings mean stronger launches, steadier voltage, and fewer moments where the truck feels like it’s running out of breath.
Battery Tray Space and Fitment
One of the nice surprises with the Maxx Ultimate is how much room the tray gives you. You can easily slide in batteries up to 180 × 50 × 48 mm. In real terms, that covers CNHL 4S LiPo packs from 5000mAh up to 9500mAh, and they all sit securely without mods.
Durability and Value
Compared to stock packs, CNHL upgrades don’t just list bigger numbers—they feel tougher in real use. The higher C-rates, more stable voltage, and longer cycle life translate to packs that hold up over time. Put simply, you get a battery that lasts longer and saves you from buying replacements every season. For Traxxas fans who bash hard, that math makes sense.
Looking for More?
Want a deeper dive into how the Maxx Ultimate stacks up and what it’s like to drive? Check out our full review here: Traxxas Maxx Ultimate: What’s New, How It Drives, and Who It’s For.