Optima RTS-4.2 · 50Ah 12V 815A · petrol and diesel passenger vehicles

Summary: Battery Optima RTS-4.2 at a glance: 50Ah 12V 815A, intended for cars and vans. Owners usually check three things first: size, terminal side and starting power.

Optima RTS-4.2: dimensions and ratings

Optima RTS-4.2 in everyday use

A car parked under a streetlight for a fortnight can greet you with silence. A memory saver plugged into the 12-volt socket keeps radio codes and window settings alive during the swap. Batteries rarely fail on a warm day; winter usually exposes them.

Optima RTS-4.2 for cars and vans

Drivers who search for Optima RTS-4.2 usually have the old battery right in front of them, code and all. On paper it reads 50Ah 12V 815A, which is what most drivers compare first. Comparing batteries online side by side rules out the wrong size in seconds.

Nothing unusual about 50Ah: a standard capacity for cars and vans. 815A of cold cranking current is strong for a battery of this size.

Questions buyers ask about the Optima RTS-4.2

Five checks for a perfect fit

• ✓ The capacity rating, 50Ah, should suit the consumers you run. Lots of electrical equipment calls for the higher end.
• ✓ Cold cranking 815A: compare with your handbook's requirement.
• ✓ Technology to match: spiral-cell AGM. Moving to a different chemistry may need settings changed in your system.

More options

Got the old battery's label in front of you? Compare it once more, then order online at baterias.online. Bookmark this page if you want the data sheet to hand while fitting.

• Browse the full range for cars and vans
• All Optima products on baterias.online

The spiral-cell AGM technology explained

Each spiral cell is wrapped in its own glass mat, AGM style. Boats use spiral cells because they cope with pounding seas. Recharge after heavy accessory use.