2022 Mercedes-Benz Sprinter Battery Size & Group

Quick answer

• BCI Group Size: H7/94R (Main Battery), H5/L2 (Auxiliary Battery - if equipped)
• CCA Rating: 850-950 CCA (Main Battery)
• Reserve Capacity: 150-170 minutes (Main Battery)
• AGM vs. Flooded: AGM (Absorbed Glass Mat) battery is almost always required for the main battery in a 2022 Sprinter due to its sophisticated electrical system and start/stop technology. Flooded batteries are generally not recommended.
• Terminal Layout: Typically EN (European) terminal layout, recessed. Positive on the right, negative on the left when facing the battery posts.
• Physical Dimensions: 315mm L x 175mm W x 190mm H (Main Battery, approximate).
• Dual-Battery Setup: Many Sprinters, especially those used for commercial purposes or RV conversions, come equipped with a dual-battery system. This often includes a primary starting battery (located under the driver's footwell) and an auxiliary battery (often under the hood or in a battery tray within the engine bay, or under the passenger footwell) to power accessories and provide house power for conversions. The auxiliary battery is often a smaller H5/L2 AGM battery.

Replacement battery options

Finding the exact part numbers can vary by retailer and specific battery line, but here are common replacements by brand for the main H7/94R AGM battery:

• Interstate: MTX-94R/H7 AGM (or similar line)
• Optima: Optima RedTop or YellowTop batteries often have an equivalent, but verify the H7/94R fitment carefully.
• DieHard: Platinum AGM H7 Group 94R
• Odyssey: ODP-AGM94R H7 (PC1350)
• ACDelco: ACDelco Gold 94RAGM (or Professional AGM)

For the auxiliary H5/L2 AGM battery (if equipped):

• Interstate: MTX-L2/H5 AGM (or similar line)
• DieHard: Platinum AGM H5 Group L2
• Odyssey: ODP-AGML2 (PC925)

AGM vs. flooded — which does this vehicle need?

A 2022 Mercedes-Benz Sprinter overwhelmingly requires an AGM (Absorbed Glass Mat) battery for its main starting and system power. Sprinters are equipped with advanced electrical systems, including start/stop technology, numerous electronic control units (ECUs), and a demand for consistent, high-power delivery. AGM batteries are designed to handle these demands much better than traditional flooded lead-acid batteries. They offer:

• Higher cycling capability: Crucial for start/stop systems which frequently discharge and recharge the battery.
• Faster charging acceptance: Allows for more efficient recharging from the alternator.
• Greater vibration resistance: Important for commercial vehicles and those frequently on the road.
• No maintenance: Sealed design means no water checks or acid spills.
• Consistent power output: Better performance for sensitive electronics.

Using a flooded battery where an AGM is required can lead to premature battery failure, degraded performance of the vehicle's electrical systems, and potential fault codes.

Post-installation relearn / reset procedure

After replacing the battery in your 2022 Mercedes-Benz Sprinter, it's crucial to perform a few steps to ensure proper operation of the vehicle's electrical system. Modern Mercedes vehicles are highly sensitive to battery voltage and disconnection.

1. Disconnect Safely: Always disconnect the negative terminal first, then the positive. When connecting the new battery, connect the positive terminal first, then the negative.
2. Initial Power-Up: After connecting the new battery, some systems may require a few moments to re-initialize. Turn the ignition to the "ON" position (without starting) for about 30-60 seconds to allow ECUs to power up and self-test.
3. Window & Sunroof Reset (if applicable): If your power windows or sunroof aren't operating correctly (e.g., one-touch up/down doesn't work), they may need to be reset. For windows, fully lower the window, hold the button for 2-3 seconds, then fully raise the window and hold the button for 2-3 seconds at the top. Repeat for all affected windows. The sunroof procedure is similar: open fully, hold for a few seconds, close fully, hold for a few seconds.
4. Steering Angle Sensor (SAS) Reset: This is often the most important. Start the engine. Turn the steering wheel fully to the left, hold for a few seconds, then fully to the right, hold for a few seconds. Return the wheel to the center position. The ESP/traction control light on the dash should extinguish.
5. Radio/Navigation: Your radio presets may be lost. The navigation system may require driving for a short period to re-acquire its position.
6. Drive Cycle: Drive the vehicle for 10-15 minutes under varying conditions (city and highway, if safely possible) to allow all systems to recalibrate and perform self-diagnostics.
7. Check for Warning Lights: If any persistent warning lights remain (other than tire pressure monitoring, which may require driving for a bit to reset), it may indicate a deeper issue or a need for a diagnostic scan tool to clear codes.

While some simpler battery replacements might not necessitate a full scan tool procedure, some workshops may recommend connecting a Mercedes-specific diagnostic tool (like XENTRY/DAS) to officially register the new battery, especially if there were historical fault codes or specific battery monitoring systems that need resetting. This is less common for a simple battery swap but can provide peace of mind.

Signs of a failing battery

• Slow Engine Crank: The most common sign. The engine takes longer than usual to turn over, or sounds sluggish.
• Dim Headlights/Interior Lights: Especially noticeable when the engine is off or during cranking.
• Warning Lights on Dash: A battery light, check engine light, or other electrical system warnings can indicate a failing battery.
• Clicking Sound: A rapid clicking when trying to start the vehicle often means insufficient power to engage the starter motor.
• Electrical Gremlins: Unexplained malfunctions of electronic accessories, such as erratic window operation, radio issues, or dashboard warnings.
• Swollen Battery Case: A clear visual sign. If the battery case appears bloated or cracked, it's failing and potentially dangerous.
• Corrosion on Terminals: Excessive white or bluish-green powdery corrosion around the battery terminals can impede current flow.

Common battery issues for this generation

Mercedes-Benz Sprinters, particularly the VS30 generation (2019-present), have high electrical demands. Common battery-related issues include:

• Premature wear due to high electrical load: RV conversions, constant accessory use, and complex electronic systems can strain the battery, leading to a shorter lifespan than a typical passenger car battery.
• Issues with start/stop systems: If the main AGM battery is weak or not fully charged, the start/stop function may become erratic or stop working altogether.
• Auxiliary battery drain: In dual-battery setups, issues with the charging system or a parasitic draw in an upfitted camper van can lead to the auxiliary battery not holding a charge.
• Sensitive electronics: Modern Sprinters are very sensitive to voltage drops. Even a slightly weak battery can cause various electronic systems to malfunction or throw error codes, which might be misdiagnosed as other component failures.
• Difficulty accessing the main battery: The main battery is located under the driver's footwell, which makes it less convenient to access for inspection or replacement compared to an under-hood battery.

Find a trusted shop on Repairius.