Acer Extensa 4330 / TravelMate 4330 Replacement Laptop Battery (BTP-AQJ1 / AQJI Compatible)

Acer Extensa 4330 / AQJI replacement laptop battery is a high-quality lithium-ion battery designed for Acer Extensa 4330 series and compatible TravelMate 4330 laptops. It is also compatible with related Acer models that use BTP-AQJ1 (AQJI family) battery part numbers. The battery delivers stable 11.1V output and reliable backup power for everyday tasks such as web browsing, office applications, media playback, and general productivity use. It is engineered to match original specifications ensuring proper fit and compatibility with Acer Extensa 4330 and similar business-class models. The battery includes integrated safety protections such as overcharge protection, short-circuit prevention, and thermal stability to ensure safe long-term operation. Ideal for restoring original battery life and improving portability for older Acer Extensa laptops.