What Size Battery Is in the 2008 Hyundai Accent?

The 2008 Hyundai Accent typically uses a Group 124R or Group 121R 12‑volt automotive battery, with a cold cranking amps (CCA) rating usually between about 500 and 600 CCA, depending on brand and climate needs. In practice, most replacement guides list Group 124R as the standard fitment, but Group 121R and a few similar compact sizes can also be used if they match the physical dimensions, terminal layout, and hold‑down style.

Understanding the Battery Size for the 2008 Hyundai Accent

The core of the question is about “size,” which in automotive terms means more than just dimensions. For a 2008 Hyundai Accent, the right battery must match the physical group size so it fits the tray, have the correct terminal location and type, and provide enough starting power (CCA) for reliable operation. While Hyundai’s original equipment (OE) battery may not be available with the exact same branding today, modern aftermarket batteries are standardized by “BCI group size,” making it easier to find compatible replacements.

Factory-Equivalent Battery Group Size

Most parts catalogs and fitment guides from major retailers and battery manufacturers list a specific group size as the primary match for the 2008 Hyundai Accent. This section clarifies the commonly specified size and how it relates to day‑to‑day use.

Typical Group Size: 124R

In North America, the most commonly recommended replacement size for the 2008 Hyundai Accent is BCI Group 124R. This group designation indicates a standard set of dimensions and terminal positions.

The following list summarizes the key characteristics of the Group 124R battery typically used in a 2008 Hyundai Accent:

• BCI Group: 124R (primary fitment for many 2008 Hyundai Accent models in North America)
• Voltage: 12 volts
• Cold Cranking Amps (CCA): commonly in the 500–600 CCA range, depending on brand and model
• Reserve Capacity (RC): often in the 80–100 minute range (varies by manufacturer)
• Approximate dimensions: about 10.3 in (L) × 6.9 in (W) × 7.5 in (H) — 262 × 175 × 190 mm (varies slightly by brand)
• Terminal configuration: “R” (reverse) layout, meaning the positive and negative posts are mirrored compared with standard versions
• Typical chemistry: Flooded lead‑acid; AGM options are sometimes available but not required by the vehicle

These characteristics reflect what most drivers will encounter when they go to a parts store or battery retailer and ask for a replacement battery for a 2008 Hyundai Accent, ensuring a straightforward, drop‑in installation.

Alternative Group Sizes That May Fit

While Group 124R is the most commonly cited size, some catalogs and regions list alternatives with similar dimensions and compatible terminals. These options can be useful when 124R stock is limited or when drivers have specific performance needs.

The following list outlines alternative battery group sizes that are sometimes used in a 2008 Hyundai Accent, depending on market and supplier:

• Group 121R: Slightly different but very similar compact size with reverse terminals; often cited as a valid interchange for 124R in many fitment databases.
• Group 47 (H5): In some non‑U.S. markets or with modified hold‑downs, a European‑style H5/Group 47 can be used if the tray and clamp system accommodate its footprint and height.
• Other close sizes: Some installers may use other compact reverse‑terminal groups if they confirm physical fit, secure mounting, and cable reach, but this is more of a case‑by‑case solution than a standard recommendation.

While these alternatives may function correctly, the safest and most straightforward approach for most owners is to stick with the battery group size specifically recommended for their region, with Group 124R typically being the default in North America.

Key Specifications to Match When Replacing the Battery

Beyond the basic group designation, it is important to ensure the replacement battery meets or exceeds Hyundai’s original specifications for cold‑weather starting performance, electrical capacity, and physical fit. This helps prevent starting issues and electrical system problems, especially as the vehicle ages.

Cold Cranking Amps (CCA) and Climate Considerations

Cold Cranking Amps represent how much current a battery can deliver at 0°F (−18°C) for 30 seconds while maintaining a minimum voltage. For the 2008 Hyundai Accent, the OEM specification is generally in the lower‑mid 400s CCA, but modern replacement batteries often exceed this.

The list below highlights typical CCA guidelines for a 2008 Hyundai Accent replacement battery:

• Minimum practical CCA: About 450 CCA — roughly comparable to many OE‑level specifications.
• Common aftermarket range: 500–600 CCA for Group 124R and 121R batteries, offering a margin of safety.
• Cold climates: Opting for the higher end of that range (550–600+ CCA) is advisable for reliable cold starts.
• Mild or warm climates: A battery in the 450–550 CCA range is typically adequate and may cost slightly less.

Ensuring the battery meets or exceeds these CCA ranges helps the Accent’s 1.6‑liter engine crank reliably, particularly as the battery ages or in sub‑freezing temperatures.

Physical Dimensions, Terminals, and Hold‑Downs

Even if the electrical rating looks good on paper, the battery must physically fit in the car and allow for secure connections and mounting. The Accent’s engine bay is relatively compact, so mismatched sizes can create real problems.

The following list covers the physical fitment elements owners should confirm when choosing a battery for a 2008 Hyundai Accent:

• Length, width, height: Must closely match the Group 124R (or approved alternative) dimensions so the battery sits properly in the tray.
• Terminal type: Standard SAE top‑post terminals are expected; side‑post or specialized terminals will not work.
• Terminal orientation: The positive and negative posts must align correctly with the factory cables; “R” (reverse) layout is typically required.
• Hold‑down compatibility: The base flanges or edges of the battery must allow the factory clamp or bracket to secure it firmly.
• Cable reach: Battery posts must be positioned so the OEM cables connect without stretching or crossing unsafely.

Verifying these factors before purchasing reduces the risk of finding out, mid‑installation, that the battery does not fit or cannot be secured safely in the vehicle.

OEM vs. Aftermarket: What Drivers Will See Today

The original Hyundai‑branded battery that came with a 2008 Accent is unlikely to be available new in the same form, but modern aftermarket options are standardized and typically outperform the original in CCA and durability. Most drivers will interact with these offerings at parts stores, big‑box retailers, or dealership service centers.

Common Replacement Options on the Market

Today’s replacement batteries for the 2008 Hyundai Accent are sold under many brand names, but they usually follow the same underlying group specifications. This gives drivers flexibility in price and performance while maintaining compatibility.

The following list describes the main types of replacement batteries owners are likely to find for a 2008 Hyundai Accent:

• Standard flooded lead‑acid: The most common and economical type; suitable for most daily‑driven Accents without heavy accessory loads.
• Enhanced flooded or “maintenance‑free”: Improved versions of flooded batteries with better resistance to vibration and reduced water loss.
• AGM (Absorbent Glass Mat): Sometimes available in compatible group sizes; offers better vibration resistance and spill‑proof design, useful if the car sees rough roads or frequent short trips.
• Warranty tiers: Many brands offer 2‑, 3‑, or longer free‑replacement warranties; higher‑tier batteries generally include higher CCA and better construction.

All of these types can power a 2008 Hyundai Accent effectively as long as the correct group size, CCA, and physical fit are respected, allowing owners to choose based on budget and usage patterns.

How to Confirm the Correct Battery for Your Specific Accent

Although the 2008 Hyundai Accent lineup is relatively simple, trims, regional specifications, and previous owner modifications can lead to minor differences under the hood. Cross‑checking several sources is the best way to ensure a precise match.

Steps Owners Can Take Before Buying

Before purchasing a new battery, Accent owners can do a quick verification process that prevents compatibility issues and return trips to the store.

The following list outlines practical steps to confirm the correct battery size and spec for a 2008 Hyundai Accent:

1. Check the existing battery label: Look for the BCI group size (e.g., “124R” or “121R”) and CCA rating printed on the current battery.
2. Consult the owner’s manual: Hyundai typically lists recommended battery specifications, including minimum capacity and sometimes a size guideline.
3. Use an online fitment tool: Major parts retailers and battery manufacturers offer lookup tools keyed to year, make, and model for verification.
4. Ask a local parts store or dealer: Staff can cross‑reference VIN and regional data to confirm the recommended group size.
5. Visually compare dimensions: If in doubt, compare the new battery to the old one in the store, checking length, width, height, and terminal layout.

Following these steps provides extra assurance that the replacement battery will match the vehicle as delivered from the factory, or at least as currently configured.

Summary

For the 2008 Hyundai Accent, the commonly specified replacement battery is a 12‑volt BCI Group 124R unit, usually offering around 500–600 CCA, with Group 121R and a few similar compact reverse‑terminal sizes sometimes listed as alternatives. The crucial factors are that the battery fits the tray, has the correct reverse‑orientation top posts, meets or exceeds the original CCA rating, and can be secured with the factory hold‑down. By matching these specifications and cross‑checking with the existing battery, owner’s manual, or a reputable fitment guide, Accent owners can confidently choose a battery that will start the car reliably and integrate cleanly with its electrical system.

What is the battery of a Hyundai Accent?

A 12V lead-acid battery is the most common type used in Hyundai Accent vehicles to start the engine and power electrical systems. It is reliable and cost-effective, making it ideal for petrol and diesel Hyundai Accent cars with standard power needs.

How do I know my car battery size?

You can check a car battery’s size by finding the BCI Group Size number on the battery’s label, checking your owner’s manual, or using an online battery finder tool. The BCI Group Size indicates the battery’s physical dimensions and terminal location, ensuring it will fit in your vehicle’s battery tray and have the correct cable reach. 
Methods to find your car battery size
This video explains how to find your car’s battery specifications: 34sGS Yuasa UKYouTube · Feb 8, 2023
1. Check the battery label

• Look for a sticker or label on the top or side of the battery. 
• Find the “Group Size” or “BCI Group Size,” which is a number (like 24F or 65) that corresponds to the physical size and terminal positions. 

2. Consult your owner’s manual

• The owner’s manual will have a specifications section for the battery.
• This information will tell you the exact BCI Group Size and minimum Cold Cranking Amps (CCA) required for your vehicle. 

3. Use an online battery finder 

• Many auto parts websites have a “battery finder” tool.
• You can input your car’s year, make, model, and engine to get a list of compatible battery sizes. 

4. Measure the battery (if labels are missing) 

• If the label is gone, use a tape measure to find the battery’s exact length, width, and height. 
• Record these dimensions and use them to cross-reference with compatible batteries, but it’s best to also verify the group size from another source if possible. 

What battery goes in a 2008 Hyundai Accent?

Duralast Group Size 121R Battery 121R-DL.

What size battery for a Hyundai Accent?

The Hyundai Accent typically uses a Group Size H5 or Group Size 47 battery, with a 12V lead-acid starting type. However, the exact size can vary by model year and trim, so it’s best to confirm by checking the battery in your vehicle or using an online battery finder with your car’s registration. 

Group Size	DIN Group	BCI Group
H5	H5	47

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Key specifications

• Voltage: 12V
• Type: Standard flooded or AGM (Absorbed Glass Mat)
• Cold Cranking Amps (CCA): Around 550-740 CCA is common, but this can vary
• Reserve Capacity (RC): Around 100 minutes 

How to find the correct battery size

• Look at your current battery: The group size is typically printed on the battery’s label. 
• Use an online battery finder: Many auto parts websites have a tool where you can enter your car’s registration or model year and get a list of compatible batteries. 
• Consult your owner’s manual: The manual will specify the correct battery for your vehicle.