What is the battery model for the Enclave 2.8T?
2 Answers
2.8T Buick Enclave currently mainly uses VARTA OEM AGM (Absorbent Glass Mat) lead-acid batteries with glass fiber separator technology to enhance continuous discharge performance and rated capacity. This AGM lead-acid battery features high acid resistance and stronger electrolyte absorption, resulting in lower internal resistance and extended battery life. Most importantly, it offers excellent deep discharge performance, allowing frequent high-current discharges in short durations. The functions of the battery are: 1. Powering the starter when starting the engine; 2. Assisting the generator in supplying power to electrical devices when the generator is overloaded; 3. Supplying power to electrical devices when the generator is not generating electricity or the voltage is low; 4. Converting part of the electrical energy into chemical energy for storage when the generator's terminal voltage is higher than that of the lead-acid battery.
I drove an Envision 2.8T for several years, and the battery was always an issue. When the original battery failed, a professional shop identified it as an H6 AGM model—specifically a 12-volt AGM battery with around 70 amp-hours capacity. This type of battery is crucial because the start-stop system frequently activates, requiring durability. Back then, I waited a bit and replaced it with a new ACDelco AGM battery, which matched the OEM specs. After installation, the engine started much smoother. I once accidentally used a regular battery, which triggered an error in the electronic control module, forcing me to swap it back—a hassle. For routine maintenance, I make it a habit to check the cleanliness of the terminals every quarter to prevent corrosion. If replacing it yourself, ensure the dimensions are correct—the H6 size must fully occupy the bracket space, or the car may feel unstable. In short, with the right battery match, driving becomes worry-free and fuel-efficient. I recommend checking the vehicle manual or confirming the exact model details with a 4S store.
