Nissan Altima Oem Battery Group Size and Cca Rating Guide

Your Nissan Altima won't start, and you're staring at a dead battery in the parking lot. Before you rush to the auto parts store, you need to know the exact OEM battery group size and CCA rating for your Altima year. Getting either one wrong means buying a battery that either won't fit in the tray or won't deliver enough power to crank your engine reliably. This article breaks down exactly what you need, year by year, so you can replace your battery with confidence.

What battery group size does the Nissan Altima use from the factory?

The battery group size is a standard set by the BCI (Battery Council International). It defines the battery's physical dimensions length, width, height, and terminal placement. A battery with the wrong group size might not sit in the tray, or the positive and negative terminals could be reversed, creating a serious problem.

For most Nissan Altima model years, the OEM battery group size falls into two categories:

BCI Group 35 Used in 2002–2018 Nissan Altima models (2.5L and 3.5L engines)
BCI Group 48 (H6/L3) Used in 2019 and newer Nissan Altima models

If you drive a 2005 Nissan Altima or a similar mid-2000s model, your car uses a Group 35 battery. This has been the standard Altima battery for the longest stretch of production years.

What is the OEM CCA rating for the Nissan Altima battery?

CCA stands for Cold Cranking Amps. It measures how many amps a battery can deliver at 0°F (−18°C) for 30 seconds while maintaining at least 7.2 volts. In simple terms, CCA tells you how well your battery can start your engine in cold weather.

The OEM CCA ratings for the Nissan Altima are:

2002–2018 Altima (Group 35): 640 CCA (standard), with aftermarket options going up to 700–750 CCA
2019+ Altima (Group 48/H6): 730 CCA (standard), with some OEM suppliers rating up to 760 CCA

Nissan specifies these ratings to match the Altima's starter motor demand, electrical load from the engine control module, and climate considerations. Going below the factory CCA rating is not recommended, especially if you live in a region with cold winters.

Why does matching the exact group size and CCA matter so much?

Think of group size as a physical fit problem and CCA as a power problem. You need both to be correct.

Wrong group size: The battery won't bolt down properly. It could shift during driving, damage cables, or cause terminal contact issues. In some cases, the terminals end up on the wrong side, and the cables won't reach.
Wrong CCA rating: A battery with too few cold cranking amps might struggle to start your engine on a cold morning. It also works harder than intended, which shortens its lifespan.

Both problems are avoidable. You just need the right spec before you shop.

How do I find the battery group size for my specific Altima year?

There are three reliable ways to confirm your Altima's battery group size:

Check the owner's manual The battery specifications section lists the BCI group size and recommended CCA.
Look at your current battery The group size is printed on the label, usually near the top or front of the battery casing.
Use the vehicle year lookup Cross-reference your model year with BCI group charts. Our detailed Altima battery specifications page covers every generation.

Quick reference by model year

2002–2006 Altima: Group 35, 640 CCA
2007–2012 Altima: Group 35, 640–700 CCA
2013–2018 Altima: Group 35, 640–700 CCA
2019–2024 Altima: Group 48 (H6), 730–760 CCA

Keep in mind that some trim levels with larger engines or additional electronics may specify a higher CCA within the same group size.

What are common mistakes people make when buying an Altima battery?

Here are the errors we see most often:

Assuming all Altimas use the same battery The switch from Group 35 to Group 48 happened in 2019. Buying a Group 35 for a 2019+ Altima (or vice versa) means it won't fit correctly.
Ignoring CCA and only looking at price A cheaper battery with 500 CCA might save you $30 upfront but can leave you stranded in winter.
Not checking terminal orientation Even within the same group size, terminal positions can vary between brands. Always verify positive is on the correct side.
Forgetting about AGM vs. flooded lead-acid Newer Altimas with idle-stop technology often benefit from AGM (Absorbent Glass Mat) batteries, which handle repeated deep cycling better.

Our Altima replacement battery guide walks through the full selection process if you want a step-by-step breakdown.

Can I use a battery with higher CCA than the OEM spec?

Yes, and in most cases it's a good idea. A battery with higher CCA than the factory minimum means more available starting power. It won't harm your Altima's electrical system the starter motor only draws what it needs. A 750 CCA battery in a car specified for 640 CCA simply has more headroom, especially useful in cold climates or if your car has added electrical accessories.

What you should not do is go lower than the OEM CCA rating. Undersized CCA puts stress on the battery and starter, leading to premature failure.

How long does a Nissan Altima battery typically last?

Most Altima batteries last 3 to 5 years under normal driving conditions. Factors that shorten battery life include:

Frequent short trips that don't fully recharge the battery
Extreme heat (batteries degrade faster above 90°F)
Leaving lights or accessories on while the engine is off
A failing alternator that undercharges the battery

If your Altima battery is over three years old, have it tested at an auto parts store or dealership. Most stores offer free battery testing with a digital analyzer.

What should I do before installing a new battery?

Before you swap the old battery, keep these steps in mind:

Use a memory saver Plug one into your OBD-II port or cigarette lighter to preserve radio codes, seat memory, and ECU settings while the battery is disconnected.
Disconnect the negative terminal first This reduces the risk of a short circuit. When installing the new battery, connect the positive terminal first.
Clean the battery tray and cable connectors Corrosion on terminals is a leading cause of poor electrical contact. Use a wire brush and a baking soda-water solution.
Torque the hold-down clamp A loose battery vibrates and can suffer internal damage over time.
Register the new battery (if applicable) Some newer vehicles with smart charging systems need the new battery registered via a scan tool. Check your Altima's year and trim to see if this applies.

Practical checklist: buying the right battery for your Altima

✓ Confirm your model year and engine size
✓ Match the BCI group size (Group 35 for 2002–2018, Group 48 for 2019+)
✓ Choose a battery with CCA equal to or higher than the OEM spec (640+ for Group 35, 730+ for Group 48)
✓ Decide between standard flooded and AGM based on your driving habits
✓ Verify terminal orientation before purchasing
✓ Check the warranty look for at least a 3-year free replacement period

The right battery keeps your Altima starting strong every morning. Match the group size, meet or exceed the CCA rating, and you'll avoid the most common (and costly) replacement mistakes. If you're looking for a typeface to design your next automotive project or service manual cover, check out Bebas Neue for a bold, clean look.