A flat battery rarely picks a convenient time to happen. Before you head out to replace one, it helps to know which code actually fits your vehicle — because a battery that's the wrong size, capacity, or terminal layout can cause starting issues even if it physically squeezes into the tray. At A2R Batteries & Performance, we help customers across Sydney and Melbourne match the correct battery the first time, every time.

Start With Your Current Battery's Code

The quickest way to identify a replacement is to read the label on your existing battery. Small and mid-size passenger cars commonly use an NS40L battery or NS40LS battery, while slightly larger sedans often step up to a 55D23L battery or 55D23R battery — the "L" or "R" simply tells you which side the terminals sit on, so it's worth double-checking before you buy.

Bigger Vehicle? Look for These Codes

4WDs, utes, and larger SUVs typically need more cranking power and reserve capacity. Common fitments include the 80D26L NS70L battery, 80D26R NS70 battery, 105D31R N70ZZ battery, and 105D31L N70ZZL battery — all popular with tradies, tourers, and anyone running extra lighting, winches, or fridges off their electrical system.

European Cars Usually Need a DIN Battery

If you drive a European make, your battery likely follows DIN sizing rather than Japanese or Korean standards. Look out for a Q85L Q85 battery, or one of the DIN53LH DIN55H, DIN65LH DIN66H, DIN75LH DIN77H, or DIN85LH DIN88H codes stamped on the case. Getting the DIN size right matters, since these batteries are shaped and rated differently to their Asian counterparts.

Heavy-Duty, Commercial, and Dual-Battery Setups

Trucks, tractors, and vehicles with auxiliary battery systems often run higher-capacity codes such as the E41L N100L battery, N120 battery, N150 battery, N150L N150EU battery, or N200L N200EU battery. These are also the go-to options for winches, off-grid setups, and heavy accessory loads.

Japanese and Korean Import Fitments

Import vehicles frequently use S-series codes rather than standard automotive equivalents. Common examples include S34B20L, S34B20R, S46B24L, S46B24LR, S55D23L, and S55D23R batteries. If you're unsure which applies to your import, our online fitment search can confirm the exact match by make, model, and year.

Don't Forget Mobility Batteries and Chargers

Not every battery need is under a bonnet. We also stock dependable mobility batteries for scooters and wheelchairs, plus a range of car battery chargers to maintain any battery through periods of low use — particularly useful for seasonal vehicles, boats, or equipment that sits idle over winter.

Still Not Sure? Ask the Experts

Guides can only take you so far — the fastest way to guarantee the right fit is to have it checked in person. Our Sydney and Melbourne teams test batteries for free and can source any of the codes above on the spot, backed by genuine manufacturer warranties.

Book a free battery test today, or get in touch with A2R Batteries & Performance for expert advice on any battery, charger, or fitment question.