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

In short: Short version: Optima RTC-4.2, made for cars and vans, with a rating of 50Ah 12V 815A. Compare the code on your old battery with RTC-4.2 before ordering.

Measurements, ratings and codes

Fitting and everyday care

A family estate loaded for the holidays leans on its battery the moment the engine starts. Keep tools away from both posts at once to avoid sparks. Choosing a lower capacity than the original to save a little usually ends with a dead battery once the frosts arrive.

Why choose the Optima RTC-4.2

For cars and vans that call for a Optima RTC-4.2, here are the facts, rated 50Ah 12V 815A. The figures for the Optima RTC-4.2 are copied from the maker's data, so you can compare like with like. With the old battery's label in your hand, finding its match at baterias.online is straightforward.

Most batteries for cars and vans land close to 50Ah, and this one does too. 815A beats many larger batteries for cranking.

Frequently asked questions

Check before ordering

• ✓ Tape measure time: 254 × 175 × 200 mm is the footprint and height of this case. Leave a little clearance for the clamp and the cable lugs.
• ✓ 50Ah sets how long the battery can power things with the engine off.
• ✓ Cold cranking current reaches 815A. It ought to equal the carmaker's requirement at minimum, more so for diesels in cold winters.

More options

Codes matching and measurements agreeing? The Optima RTC-4.2 can go straight into your basket at baterias.online. Recycling the old battery is easy at most tips and garages.

• Browse the full range for cars and vans
• See every Optima reference

spiral-cell AGM: how it works

Rolled plates give a large surface area in a compact cell. Low internal resistance lets spiral batteries recharge quickly. Avoid discharging below the level the maker recommends.