If you own a Mahindra XUV700, particularly the feature-loaded AX7L, you already know how demanding the vehicle is on its electrical system. From the AdrenoX infotainment screens to the ADAS module, motorized seats, and panoramic sunroof, this SUV requires serious power. Unfortunately, the factory-fitted battery often struggles to keep up over time.
Here is a detailed breakdown of why the default setup falls short and how to execute the perfect battery upgrade without modifying your factory cables.
Understand the XUV700 factory battery limitations
Most XUV700 models roll out of the factory equipped with an OEM 26L case size battery, typically rated at just 65Ah (often carrying a “95” series label). While this capacity is sufficient to crank the engine, it lacks the deep reserve power needed to consistently run heavy electronics, especially when the vehicle is turned off or idling in heavy traffic.
If you check the owner’s manual, Mahindra explicitly states that a 90Ah battery is possible. Upgrading to a higher-capacity unit makes perfect sense to prevent sudden voltage drops, slow cranking, or unexpected system reboots. The battery tray inside the XUV700 is quite generous and can easily accommodate a larger 31-liter physical size battery.
Evaluate the Amaron 135D31R upgrade
When looking to upgrade, Amaron is widely regarded as the most reliable brand for this vehicle. Naturally, many owners try to maximize their capacity and select the Amaron 135D31R, which sits in the 90Ah range.
While the 31-liter footprint of the 135D31R drops into the tray perfectly, there is a hidden physical constraint: the terminal spacing. The positive and negative posts on this specific variant are positioned slightly further apart than the stock setup. To connect your car to this battery, you must stretch the factory terminal cables aggressively. Putting the main electrical cables under continuous tension is a poor practice, as engine vibrations can eventually weaken the connection points or wear out the insulation.
Install the Amaron 105D31R for the perfect fit
To get the best of both worlds—higher capacity and a factory-perfect fit—choose the Amaron 105D31R.
This variant is rated at 80Ah, which is a massive improvement over the stock 65Ah unit and easily handles the heavy electrical loads of the AX7L. Because it shares the exact same 31-liter casing, it rests securely securely inside the engine bay. More importantly, the terminal posts on the 105D31R are distanced perfectly to align with the XUV700’s OEM wiring harness. Your cables will bolt down easily with zero stretching, maintaining the complete structural integrity of the factory wiring.
Upgrading to the 105D31R provides immediate peace of mind. You gain a solid 15Ah of extra reserve capacity to stabilize the power supply across all electronic modules, all while keeping the installation process entirely plug-and-play.
