Car Battery FAQ's - Everything You Need to Know

Your car battery’s main role is to deliver the high CCA required to start the engine and support electrical components when the alternator isn’t producing enough power. Once the engine runs, the alternator supplies almost all electrical power, while the battery stabilises the system.

On average, a car battery lasts 3 to 5 years, depending on your driving habits, weather conditions, and how often your vehicle is used. Extreme temperatures and short trips can shorten its lifespan.

Common signs include slow engine cranking, dim headlights, dashboard warning lights, or a clicking sound when you turn the key. If your battery is more than three years old, it’s worth having it tested.

Leaving lights or electronics on, short trips that don’t recharge the battery, or a failing alternator are the most common causes. Age and extreme heat also reduce a battery’s ability to hold charge.

Yes. Most Deltec batteries are sealed, maintenance-free units, meaning you don’t need to top up with water. They’re designed for reliable performance with minimal upkeep.

Drive regularly, avoid leaving lights or electronics on when parked, and make sure your battery terminals stay clean and tightly connected. Periodic testing also helps catch issues early.

Extreme heat accelerates chemical wear inside the battery, while cold weather reduces its cranking power. Parking in shaded or covered areas can help extend its lifespan.

Interior lights, faulty wiring, or a malfunctioning alternator can cause parasitic drains. If your car won’t start in the morning, it’s best to have both the battery and alternator tested.

Use quality jumper cables and follow the correct sequence:

1. Connect positive (+) on both batteries.
2. Connect negative (–) on the live battery, then to a metal ground point on the dead car (not the battery itself).
3. Start the working vehicle first, then the other.
   If unsure, refer to your car’s manual or visit Deltec for assistance.

• AGM (Absorbent Glass Mat) batteries are sealed, maintenance-free, and deliver higher power for start-stop systems and modern vehicles.
• EFB (Enhanced Flooded Battery) offers improved cycle life for vehicles with light start-stop features.
• Standard Flooded Batteries are ideal for older or less power-demanding cars.

A deep-cycle battery is designed to be discharged and recharged repeatedly at deep levels, unlike a normal acid starter battery that is only meant for short bursts and shallow discharge.

Lithium batteries work exceptionally well for energy storage and solar applications, but not all lithium models are designed for automotive cranking. A vehicle requires high Cold Cranking Amps (CCA) to start the engine, and most lithium batteries do not provide the required CCA output. Always check the battery’s CCA rating and confirm that it is cranking-approved before using it in a vehicle.

• You can find Deltec batteries nationwide through our branches, partner retailers, and authorised resellers. Use our branch locator on the website to find one closest to you.

Warranty periods vary depending on the product range — typically between 12 and 24 months. For details, refer to your product warranty card or ask in-store.

Yes, Deltec products are available through our website and authorised online distributors. Visit our product pages to request a quote or find your nearest outlet.

Absolutely. Our batteries are engineered for local climates, ensuring consistent performance under high heat, humidity, and demanding driving conditions.

If the lights and dashboard are dim or dead, it’s likely the battery. If the engine starts but quickly dies, the alternator may be the issue. Testing both is the best way to be sure.

A faulty alternator, parasitic drain, or infrequent driving can cause repeat battery failure. It’s important to have your charging system checked by a professional.

Quick rule of thumb:

If it dies overnight → battery.
If it dies while driving → alternator.

Yes. A failing battery forces the alternator to work much harder to keep the system charged. This extra strain can overheat or damage the alternator over time.

Yes. If the battery can’t supply enough power, the starter won’t get the required voltage. This causes slow cranking, clicking, or no crank at all, even if the starter itself is fine.