Optima Yellow Top Battery YTU 4.2

Optima Batteries, engineered in the USA with over 40 years of expertise, deliver exceptional power and reliability across automotive, marine, mobility, UPS, and specialist applications. Utilizing advanced SpiralCell® technology—originally developed for lunar rover systems—these fully sealed AGM batteries provide maintenance-free operation, fast charging, low self-discharge, and outstanding vibration resistance.

The Optima Yellowtop YTU 4.2 battery is designed to last up to three times longer than traditional batteries, delivering consistent, uninterrupted power throughout the entire discharge cycle. Its compact design reduces weight and simplifies installation in tight spaces, while remaining fully sealed, spill-proof, and highly resistant to extreme temperatures. With superior voltage output and maintenance-free performance, it ensures optimal starting power and dependable operation in demanding environments.

A high-performance, durable, and maintenance-free solution, Optima Batteries combine long life, reliability, and superior power delivery for a wide range of professional and specialist applications.

Technical Specifications