2019 Mercedes-Benz Sprinter Battery Size & Group

Quick Answer

• BCI Group Size: H6/48 or H7/94R (depending on configuration)
• CCA Rating: 760-850 CCA (consult your owner's manual or existing battery for exact specs)
• Reserve Capacity: 140-160 minutes
• AGM vs. Flooded: AGM (Absorbent Glass Mat) is highly recommended and often standard for these vehicles due to their demanding electrical systems. Flooded batteries are not typically suitable.
• Terminal Layout: Typically DIN (recessed terminals) with positive on the right.
• Physical Dimensions: Refer to H6/48 or H7/94R specifications for exact measurements. These are standard European sizes.
• Dual-Battery Setup: Some diesel models, especially those with extensive upfitting or auxiliary systems, may feature a dual-battery setup (one starter, one auxiliary/house battery). Verify your specific vehicle's configuration.

Replacement Battery Options

While specific part numbers can vary by retailer and are subject to change, here are common series from popular brands that fit the 2019 Mercedes-Benz Sprinter. Always double-check fitment with your chosen retailer.

• Interstate: MT5-48/H6 or MT5-94R/H7 (AGM variants are also available, e.g., MTX-48/H6 or MTX-94R/H7)
• Optima: Optima YellowTop H6 or H7 (often found as DH6/DH7 for DieHard equivalents)
• DieHard: Platinum AGM H6 or H7
• Odyssey: Extreme Series PC1220 or PC1350 (check for specific H6 or H7 equivalents)
• ACDelco: 48AGM professional (H6) or 94RAGM professional (H7)

AGM vs. Flooded — Which Does This Vehicle Need?

For the 2019 Mercedes-Benz Sprinter, an AGM (Absorbent Glass Mat) battery is strongly recommended, and in many cases, required. Sprinters are equipped with sophisticated electrical systems, including start-stop technology, numerous electronic control units (ECUs), and often serve as platforms for various upfits that draw significant power. AGM batteries are far superior to traditional flooded lead-acid batteries for these applications due to several key advantages:

• Better Cycling Performance: AGM batteries can withstand deeper discharges and more charge/discharge cycles, crucial for vehicles with demanding electrical loads or start-stop systems.
• Higher Power Output: They deliver stronger cranking power, especially in cold conditions.
• Vibration Resistance: Sprinters, being commercial vehicles, often endure significant vibration. AGM batteries are more resistant to vibration damage.
• Spill-Proof and Maintenance-Free: The electrolyte is absorbed in glass mats, making them spill-proof and eliminating the need for water topping off.
• Consistent Performance: They maintain a more consistent voltage throughout their discharge cycle.

Using a conventional flooded battery in a Sprinter designed for AGM can lead to premature battery failure, electrical system malfunctions, and potentially shortened lifespan of other electronic components. Always verify your vehicle's original battery type and replace it with an equivalent or superior AGM unit.

Post-Installation Relearn / Reset Procedure

After replacing the battery in your 2019 Mercedes-Benz Sprinter, it's crucial to perform a few steps to ensure all systems function correctly. While Sprinters are generally good at self-recalibrating, some aspects may require attention:

1. Date and Time: Reset the clock and date in the infotainment system.
2. Window Auto-Up/Down: Roll each window down completely and hold the button for a few seconds, then roll it up completely and hold the button for a few seconds. This resets the "one-touch" function.
3. Radio Presets: Re-enter your radio station presets.
4. Steering Angle Sensor (SAS): In some cases, the ESP (Electronic Stability Program) or ABS warning light might illuminate. To reset the SAS, start the engine, turn the steering wheel all the way to the left, then all the way to the right, and then back to the center. Drive the vehicle a short distance (e.g., 15-20 mph) in a straight line, and the lights should extinguish. If they remain, a diagnostic scan tool may be required.
5. ECM Adaptation: The Engine Control Module (ECM) may need to re-learn driving parameters, which happens automatically over a few drive cycles.
6. Battery Management System (BMS) Reset (Professional Scan Tool Recommended): For optimal battery life and performance, especially with AGM batteries in modern vehicles, a dedicated battery registration or BMS reset with a Mercedes-Benz compatible diagnostic tool (e.g., XENTRY/DAS, Autel, Launch) is highly recommended. This tells the vehicle's charging system that a new battery has been installed, allowing it to charge the battery correctly according to its age and type. While the vehicle may function without this, it can lead to suboptimal charging and reduced battery lifespan.

Signs of a Failing Battery

Recognizing the signs of a failing battery can save you from being stranded:

• Slow Engine Crank: The most common sign. The engine turns over sluggishly when you try to start it.
• Dim Headlights/Interior Lights: Especially noticeable when trying to start the vehicle.
• Warning Lights: Battery warning light on the dashboard, or sometimes ABS/ESP lights due to low voltage.
• Clicking Noise: A rapid clicking sound when turning the key, indicating insufficient power to engage the starter.
• Corrosion on Terminals: White or bluish powdery substance around the battery terminals can indicate leakage or poor connection, though it's not always a direct sign of internal battery failure.
• Swollen or Bulging Battery Case: A clear indicator of internal damage, often due to overcharging or extreme heat.
• Electronics Malfunctions: Erratic behavior of infotainment, power windows, or other electrical accessories.
• Frequent Start-Stop System Deactivation: If your Sprinter has start-stop, it may frequently disable this feature if the battery charge is insufficient.

Common Battery Issues for This Generation

Mercedes-Benz Sprinters, particularly the VS30 generation (2019+), are known for their demanding electrical systems, which can sometimes lead to specific battery-related considerations:

• High Parasitic Drain: Sprinters are often equipped with many modules that draw a small amount of power even when the vehicle is off. If the vehicle sits for extended periods without being driven or connected to a charger, this can lead to battery depletion.
• Accessory Use: Upfitters often add additional electrical accessories (lights, inverters, refrigeration units, auxiliary heaters) that can significantly increase demand on the electrical system and drain the starting battery if not properly isolated or powered by a dedicated house battery.
• BMS Complexity: The advanced Battery Management System (BMS) requires proper interaction with the battery. Using an incorrect battery type or not performing a BMS reset after replacement can lead to improper charging and premature failure.
• Alternator Issues: While not directly a battery issue, a failing alternator can lead to undercharging and mimic battery problems.
• Grounding Issues: Poor or corroded ground connections can cause a variety of electrical gremlins, including starting problems that might be mistaken for a bad battery.

Regular battery testing, especially as the battery ages, and ensuring proper charging practices (especially for vehicles that sit) are key to maximizing battery life in a Sprinter.

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