What is the difference between blue label and yellow label batteries?
2 Answers
The difference between blue label and yellow label batteries lies in their warranty periods: blue label batteries come with a warranty of one and a half years, while yellow label batteries have a two-year warranty. The functions of a car battery include: 1. Providing power to the starting system, ignition system, and electronic fuel injection system when starting the engine; 2. Supplying power to the vehicle's electrical equipment when the engine is off or idling at low speed; 3. Assisting in powering electrical devices when the generator's output is insufficient; 4. Mitigating voltage surges in the electrical system to protect the vehicle's electronic equipment; 5. Storing excess electricity generated by the alternator.
I've worked in the auto repair shop for many years and often get asked about the difference between blue-label and yellow-label car batteries. The blue-label is the standard version, designed for regular family cars with smaller capacity, lower cold cranking amps (CCA), and a more affordable price, but relatively shorter lifespan. The yellow-label, on the other hand, is the upgraded version tailored for vehicles with start-stop systems, featuring CCA above 800 amps, larger capacity, better resistance to frequent charge-discharge cycles, and optimized internal structure for about 20% longer service life. The key differences lie in performance and durability: using yellow-label in start-stop cars reduces the risk of failed starts and prevents engine stalling, while blue-label may degrade within two years. Always check your vehicle manual for specifications before choosing—mixing them up can accelerate battery failure. It's best to test voltage with a multimeter before replacement to ensure compatibility and smooth driving.
