What Battery Does a 2016 Hyundai Sonata Use?

The 2016 Hyundai Sonata typically uses a 12‑volt Group 124R lead‑acid automotive battery, most commonly in an AGM (Absorbent Glass Mat) or standard flooded design, with around 600–720 cold cranking amps (CCA), depending on trim and equipment. However, exact specifications can vary by engine, options, and market, so owners should confirm via the owner’s manual, existing battery label, or a fitment guide.

Understanding the 2016 Hyundai Sonata’s Battery Specification

The 2016 Hyundai Sonata is a mid-size sedan offered with multiple powertrain options worldwide, including conventional gasoline engines, hybrid, and plug-in hybrid versions. Each configuration may use a different type and size of 12‑volt battery. For most non-hybrid gasoline models sold in North America, the OEM fitment centers around Group 124R, but capacity, technology (AGM vs flooded), and brand can differ by region and dealer.

Common Battery Type for Non‑Hybrid 2016 Hyundai Sonata Models

For the majority of 2016 Hyundai Sonata models with gasoline engines (such as the 2.4L and 2.0L turbo), the battery falls into a specific group size and performance range. The details below outline the core specifications owners should know when replacing the battery.

Typical OEM Battery Group and Specs

The following list summarizes the most common battery group and performance characteristics for the non‑hybrid 2016 Hyundai Sonata as found in North American parts catalogs and dealer fitment tools.

• Battery group size: BCI Group 124R (reversed terminals, compact size)
• Voltage: 12 volts
• Cold Cranking Amps (CCA): Usually in the 600–720 CCA range, depending on brand and trim
• Reserve capacity (RC): Typically around 90–120 minutes (varies by manufacturer)
• Battery chemistry: Lead‑acid (either standard flooded or AGM)
• Polarity: Positive terminal on the right (when terminals are closest to you), in line with the 124R specification

These specifications ensure sufficient cranking power in a wide range of temperatures and enough reserve capacity to support the vehicle’s electronics, including infotainment, lighting, and safety systems.

Variations by Trim Level and Engine

While Group 124R is the prevalent fit for many 2016 Sonata sedans, actual battery choice can differ slightly depending on trim level, factory options, and whether the car is hybridized. Understanding these variations helps avoid mismatches during replacement.

Gasoline Models (Non‑Hybrid)

Most mainstream 2016 Sonata trims—such as SE, Sport, Eco, Limited, and Sport 2.0T—use a conventionally mounted front‑engine 12‑volt battery with similar external dimensions.

• SE / Base models: Typically shipped with a mid‑range flooded lead‑acid 124R battery in the 600–650 CCA range.
• Sport / Limited trims: Often use similar group size but may have higher CCA ratings; dealerships sometimes spec AGM batteries for durability and accessory load.
• 2.0T (turbo) models: Frequently benefit from slightly higher CCA and reserve capacity due to added electrical load and starting demands.

Despite trim differences, replacement batteries for these gasoline models will almost always cross-reference to Group 124R in North American catalogs; the main decisions become brand, CCA rating, and whether to select AGM over standard flooded.

Hybrid and Plug‑In Hybrid Sonata Models (2016 Sonata Hybrid / PHEV)

The 2016 Sonata Hybrid and Sonata Plug‑in Hybrid use an additional high‑voltage battery pack for propulsion, but they still depend on a 12‑volt auxiliary battery for vehicle electronics and control systems. This auxiliary battery setup is not always identical to the conventional gasoline versions.

• Location: In many markets, the 12‑volt battery in hybrid models may be placed in the trunk area or near the cargo compartment, rather than under the hood.
• Battery type: Often an AGM 12‑volt battery is specified due to the demands of hybrid systems and the tendency for more frequent cycling of the battery for control electronics.
• Group size: Depending on region and specific hybrid variant, the group size may differ from the standard 124R; fitment tools may list alternatives like Group 151R or other compact groups.
• High‑voltage pack: Separate from the 12‑volt battery, the hybrid’s traction battery is a lithium‑ion polymer high‑voltage pack and is not interchangeable with the 12‑volt starter/auxiliary battery.

Because hybrid and plug‑in hybrid layouts can vary by market and production batch, owners of 2016 Sonata Hybrid or PHEV models should not rely solely on the non‑hybrid fitment data and should verify the 12‑volt battery model specifically for their VIN.

How to Confirm the Correct Battery for Your Sonata

While group 124R is a strong baseline for non‑hybrid 2016 Sonatas in North America, the most reliable method is to cross-check your specific vehicle details. The following steps help confirm the correct battery size and rating.

Check the Existing Battery Label

Your current battery typically lists its group size and performance data on the top label or side sticker. Reading this label is often the fastest way to identify the right replacement.

• Locate the battery: For gasoline models, it is usually in the engine bay on the driver’s side or passenger side near the fender. For some hybrids, it may be in the trunk or cargo area.
• Find the group size marking: Look for codes like “124R,” “H5,” or similar; this alphanumeric code is your group size or case size.
• Note the CCA rating: The label usually states something like “CCA 640” or “CA 750”; this indicates the starting power at low temperature.
• Identify the battery type: Words such as “AGM,” “EFB,” or “Maintenance-Free” help guide your replacement choice.

Matching or modestly exceeding the OEM battery’s CCA and reserve capacity helps ensure reliable starting and stable electrical performance in all seasons.

Use the Owner’s Manual and Online Fitment Tools

When the original battery has been replaced with a non-standard model—or its label is worn—Hyundai documentation and professional fitment databases provide authoritative references.

• Owner’s manual: The 2016 Sonata manual typically includes a battery section listing nominal capacity, type, and recommended replacement specifications.
• Dealer service department: A Hyundai dealer can use your VIN to look up the exact OEM part number and recommended battery spec.
• Online retailer fitment tools: Major battery retailers and parts stores (e.g., AutoZone, Advance Auto Parts, NAPA, Costco, Walmart, and others) offer “Find a battery” tools where you enter year, make, model, and engine to get compatible options.
• Regional differences: These tools also account for regional variations, such as different group sizes commonly stocked in Europe or Asia versus North America.

By combining the owner’s manual information with store or dealer fitment data, you can confidently choose a battery that physically fits and meets or exceeds Hyundai’s original specifications.

AGM vs Flooded Lead‑Acid: Which Is Best for a 2016 Sonata?

Most 2016 Sonatas were originally equipped with standard flooded lead‑acid batteries, though some trims or markets may use AGM batteries, especially in hybrid variants or vehicles with higher electrical demand. Deciding between the two involves cost, performance, and durability considerations.

Standard Flooded Lead‑Acid Batteries

Standard flooded lead‑acid batteries are the most common and typically the least expensive option for a 2016 Sonata.

• Pros: Lower upfront cost, widely available, adequate performance for typical daily driving.
• Cons: Less resistant to deep discharges and vibration; shorter lifespan in harsh climates or with many short trips.
• Typical use: Suitable for most SE, Sport, and Limited non‑hybrid trims when driven under normal conditions.

For drivers who mostly commute in moderate climates without heavy accessory usage, a quality flooded 124R battery generally provides reliable service at a reasonable price.

AGM (Absorbent Glass Mat) Batteries

AGM batteries are an upgraded form of lead‑acid battery designed for greater durability and cycling performance, which can be beneficial in newer vehicles with more electronics.

• Pros: Better resistance to vibration; improved performance under heavy electrical load; more tolerant of repeated discharge and recharge cycles; often longer service life.
• Cons: Higher purchase price compared to flooded batteries.
• Typical use: Recommended or required in some hybrid and plug‑in hybrid Sonatas; a good choice for owners who run multiple accessories or live in extreme hot or cold climates.

Choosing an AGM battery is generally advisable if your 2016 Sonata is hybrid or heavily optioned, or if you want a more robust long‑term solution despite the higher initial cost.

Installation and Fitment Considerations

Once you know the correct group size and type, ensuring proper installation is key to battery longevity and safety. Incorrect installation can lead to poor electrical connections, premature failure, or even damage to vehicle electronics.

Physical Fit and Terminal Orientation

Group size refers not only to external dimensions but also to terminal position and orientation, which must match your vehicle’s cable layout.

• Tray and hold‑down: Confirm the new battery sits flat in the tray and that the hold‑down bracket secures it firmly without stressing the case.
• Terminal position: A Group 124R battery has reversed terminals compared to some other sizes; the positive post should align with the Sonata’s positive cable without stretching or crossing wires.
• Cable reach: Ensure both positive and negative cables easily reach their posts without tension; do not twist or force them.

Correct physical fit and terminal orientation help prevent loose connections, cable strain, and accidental short circuits.

Electrical and System Considerations

Modern vehicles like the 2016 Sonata have sensitive electronics that may react to sudden power loss or improper reconnection, so a methodical approach is recommended.

• Memory preservation (optional): Some technicians use a memory saver device to keep radio presets and certain module settings during battery replacement.
• Clean terminals: Before installing the new battery, clean cable ends and terminal posts to remove corrosion; use a proper terminal cleaner or wire brush.
• Tight but not overtightened: Secure terminal clamps firmly to avoid loose connections but avoid excessive force that can damage posts.
• System checks: After installation, confirm that the car starts cleanly, warning lights behave normally, and that features such as windows and radio function properly.

When in doubt, professional installation by a dealer or reputable repair shop can help avoid issues with electrical systems and ensure the new battery is correctly registered in any systems that require it.

Climate and Driving Pattern: Choosing the Right CCA and Capacity

The exact CCA and reserve capacity values you choose within the acceptable range for a 2016 Hyundai Sonata should reflect your climate and driving habits. While the OEM baseline suffices for many, strengthening these specifications can offer added reliability.

Cold Weather and High Electrical Loads

In colder climates or in vehicles that frequently run accessories such as seat heaters, defrosters, or upgraded audio, a higher-CCA battery can improve starting performance and reliability.

• Cold climates: Aim for the upper end of the CCA range (e.g., 650–720 CCA) to ensure sufficient cranking power in low temperatures.
• Short-trip driving: If you mostly drive short distances, the battery may not fully recharge; using a higher quality AGM battery may better tolerate partial charge conditions.
• High accessory use: Extra reserve capacity (RC) is beneficial if the car often runs accessories while idling or with the engine off.

Optimizing CCA and reserve capacity provides a buffer against harsh operating conditions, helping prevent no-start situations and extending battery life.

Summary

The 2016 Hyundai Sonata generally uses a 12‑volt BCI Group 124R lead‑acid battery—commonly around 600–720 CCA—for most non‑hybrid gasoline models, with either standard flooded or AGM construction depending on trim, market, and owner preference. Hybrid and plug‑in hybrid variants still rely on a 12‑volt auxiliary battery but may use different locations, group sizes, and often AGM technology, separate from the high‑voltage traction pack. To choose the correct replacement, owners should confirm group size, CCA, and battery type using the existing battery label, the owner’s manual, VIN‑based dealer data, or reputable fitment tools. Selecting a high‑quality battery that matches or exceeds Hyundai’s specifications—and installing it correctly—helps ensure reliable starting, stable electrical performance, and longer service life for the 2016 Sonata.