OPTIMA® RedTop® RT U 4.2 starter battery

High performance sealed lead-acid battery for motor starting and high current applications

RedTop® series batteries are ideal for tuning vehicles, trucks, SUVs / off-roaders, as well as agricultural machinery, construction machinery, camping / caravan vehicles, emergency vehicles and generators.

Double the lifespan compared to conventional batteries

Greater power in the first 1, 2, 5 or 10 seconds of starting the vehicle compared to conventional lead batteries of the same size

Constant power ensures constant operation even during discharge

Ideal for seasonal use Hassle-free starting of the vehicle any time after storing charged for 12 months at room temperature (or below)

15 times more resistant to vibrations than other batteries

Spill proof and mountable in almost any position

A robust battery for demanding tasks

OPTIMA® batteries are quickly becoming a popular product in commercial applications

Harsh operating conditions and long storage times are the order of the day for construction and agricultural machinery

Necessary maintenance can cost farmers and construction workers valuable time, which then translates into lost productivity and profits

OPTIMA® batteries provide a consistent and reliable source of power for the demanding tasks of the commercial sector, minimizing downtime of critical machinery with less installation and reducing maintenance costs.

Passion for strength and audacity

The OPTIMA® RedTop battery is the only battery specifically designed for extreme loads. Thanks to the patented SPIRALCELL® technology, the battery offers 15 times more resistance to vibrations and twice the lifespan of conventional batteries. It is also leak-proof, extremely resistant to heat and cold, and can be stored for long periods of time without the need for maintenance. If you like to go all out, OPTIMA® is the battery for you. Look for the red cap on the six pack at your Optima dealer.

higher starting power

OPTIMA® batteries offer increased starting power in the crucial first 10 seconds of starting a vehicle. A special feature is the patented SPIRALCELL® technology, which allows for the lowest internal resistance among currently available batteries. Low internal resistance and a completely sealed casing are the key to Optima batteries' unrivaled starting performance, long life and fast charging capabilities.

vibration proof

Thanks to the patented SPIRALCELL® technology, OPTIMA® batteries offer 15 times greater resistance to vibrations and a service life twice that of conventional batteries.

OPTIMA® is unlike any other battery available today. The unique SPIRALCELL® design represents the latest technology and offers a powerful and clean energy source that far exceeds the performance of conventional lead-acid batteries. With OPTIMA® under the hood, you can count on longer battery life.
BATTERY TYPE: STARTER- UND VERSORGUNGSBATTERIE
VEHICLE TYPE: LAND- UND BAUMASCHINEN
VOLTAGE: 12 VOLT
CAPACITY: 50 AH
COLD CURRENT (IN): 815 A
TECHNOLOGY: START STOP (AGM)
POLE ARRANGEMENT (CIRCUIT): 0 (+ FRONT RIGHT - FRONT LEFT)
POLE END (POLE TYPE): 1 (STANDARD)
Length: 254mm
WIDTH: 172MM
Height: 200mm
WEIGHT: 17.60KG
STARTING CURRENT AT 0 ° C: 1000 A
INTERNAL RESISTANCE: 0.003 OHM
DISCHARGE TIME AT 25A: 100 MINUTES
BCI GROUP: 37 / 78