Optima Yellow Top YT-S4.2


Part Number: YT-S4.2
Volatage: 12V
Capacity Ah (C20): 55
CCA (EN): 765
Dimensions (mm) L x W x H: 254 x 17 x 200
Layout / Terminal Whats This?: 1/1 
Weight (Kg): 19.5


Optima Yellow Top YT-S4.2
12V 55Ah 765 CCA (EN) Battery

The Optima Yellow Top YT-S4.2 YellowTop® high-performance AGM battery is one of the only true dual-purpose automotive batteries available. With premium cranking power and unparalleled cycling capability (rechargeability), it is perfect for modern accessory-loaded vehicles. The YellowTop can repeatedly bounce back from deep power drains to full energy capacity, so it can power plenty of electronics and still start you up time after time. Lower internal resistance also provides more consistent power output and faster recharges.


  • Deep cycling and cranking power
  • Up to 2x longer life
  • More than 15x the vibration resistance
  • Completely spill-proof, mountable in many positions
  • Maintenance free
  • Faster recharging capabilities
  • Optimal starting power, regardless of temperature


Download PDF Datasheet

Additional information

Weight 19.5 kg
Dimensions 25.4 x 17.5 x 20.0 cm