Optima Red Top RT-U4.2

Part Number: RT-U4.2
Volatage: 12V
Capacity Ah (C20): 50
CCA (EN): 815
Dimensions (mm) L x W x H: 254 x 175 x 200
Layout / Terminal?Whats This?: 1/1 Side
Weight (Kg): 17.6


Optima Red Top RT-U4.2
12V 50Ah 815?CCA (EN) Battery

The Optima Red Top RT-U4.2 battery?delivers a higher level of power to the starter in the critical first 10 seconds of the vehicle starting cycle. Plus, its spill proof, highly resistant to heat and cold, can be stored for long periods without maintenance and has the lowest internal resistance of any battery on the market today.


  • Lasts up to 2 times longer than other batteries.
  • More power in the initial 1, 2, 5 and 10 seconds of the starting process than comparably rated conventional lead acid batteries.
  • 15 times more resistant to vibration than other batteries.
  • Nonspillable with complete fitment flexibility; can mount in almost any position.


Download PDF Datasheet

Additional information

Weight 17.6 kg
Dimensions 25.4 × 17.5 × 20 cm