BatteryJack inc. UT1213 Mercedes Benz ML E CL CLS 4039 car electronics accessory

Mercedes ML E CL CLS Battery Replacement

The UT1213 is a sealed AGM computer battery built as a 100 percent OEM replacement for Mercedes Benz ML, E, CL and CLS models. Its absorptive glass mat system absorbs electrolyte to prevent leakage and allows safe operation in any position. The maintenance-free design requires no water checks or specific gravity readings during its service life. Gas recombination technology controls over 90 percent of generated gas for clean, reliable performance.

Upgrade From Failed Or Ageing OEM Units

This battery replaces the original N000000004039 unit when it no longer holds charge or shows reduced backup capacity. The jump is worth it when the existing battery reaches the end of its expected four to seven year lifespan or when electrolyte leakage risk appears. Sealed construction eliminates the spill hazard of older vented designs. A three year warranty covers UPS and backup applications while other uses carry a two year warranty.

Verify Vehicle Fitment And Terminal Layout

Confirm the part number 4039 matches the original equipment specification for your specific Mercedes model before ordering. Check that the physical dimensions and terminal orientation suit the battery compartment without modification. Ensure the mounting hardware and ventilation allowances in your vehicle accept a sealed AGM unit. No charging system adjustments are required for this maintenance-free design.