![Biggest batteries I've found to fit in the stock XRT battery tray are these HRB 9500mah 4s 120c packs. The Lectron pro 5200's the hobby sold me are way too small. These Biggest batteries I've found to fit in the stock XRT battery tray are these HRB 9500mah 4s 120c packs. The Lectron pro 5200's the hobby sold me are way too small. These](https://i.redd.it/biggest-batteries-ive-found-to-fit-in-the-stock-xrt-battery-v0-3r5hhqwt4u2a1.jpg?width=4032&format=pjpg&auto=webp&s=741876a93a98e88ac5cae5528e1452fedd1b74f3)
Biggest batteries I've found to fit in the stock XRT battery tray are these HRB 9500mah 4s 120c packs. The Lectron pro 5200's the hobby sold me are way too small. These
![TRAXXAS - COMBO X-MAXX ORANGE X 8S 4WD BRUSHLESS RTR MONSTER TRUCK W/2.4GHZ TQI RADIO & TSM COMBO-77086-4-ORNGX TRAXXAS - COMBO X-MAXX ORANGE X 8S 4WD BRUSHLESS RTR MONSTER TRUCK W/2.4GHZ TQI RADIO & TSM COMBO-77086-4-ORNGX](https://www.pcmshop.com/28962-thickbox/traxxas-combo-x-maxx-orange-x-8s-4wd-brushless-rtr-monster-truck-w24ghz-tqi-radio-tsm-combo-77086-4-orngx.jpg)
TRAXXAS - COMBO X-MAXX ORANGE X 8S 4WD BRUSHLESS RTR MONSTER TRUCK W/2.4GHZ TQI RADIO & TSM COMBO-77086-4-ORNGX
![Amazon.com: Powerhobby 4s 14.8v 6500mah 100c Lipo Battery w XT60 Plug + Adapter Compatible with : Traxxas X-Maxx 8S : Toys & Games Amazon.com: Powerhobby 4s 14.8v 6500mah 100c Lipo Battery w XT60 Plug + Adapter Compatible with : Traxxas X-Maxx 8S : Toys & Games](https://m.media-amazon.com/images/I/61zCwGyQM5S.jpg)