Optima RTU-4.2 car battery replacement, rated 50Ah 12V 815A

Summary: Quick facts on the Optima RTU-4.2: intended for cars and vans, rated 50Ah 12V 815A. Owners usually check three things first: size, terminal side and starting power.

Optima RTU-4.2: what it is and who it suits

Rated 50Ah 12V 815A, the Optima RTU-4.2 replaces the original in plenty of cars and vans. Low-maintenance construction means no topping up for most owners. Batteries online are filed at baterias.online by brand and code, the same code printed on yours.

Most batteries for cars and vans land close to 50Ah, and this one does too. For its size, 815A is generous starting power.

Specifications table

Practical advice for cars and vans

An old car that has never had a new battery is often running on borrowed time. Keep tools away from both posts at once to avoid sparks. Jump-starting the car every few days is a clear message that the battery needs replacing.

About the technology: spiral-cell AGM

Glass mats wrap the spiral plates like AGM. Boats use spiral cells because they cope with pounding seas. Secure the battery firmly; the round cells need proper brackets or spacers.

Before you order: a quick checklist

• ✓ This reference uses spiral-cell AGM. If your current battery has a different technology printed on it, find out why before switching.
• ✓ Outside dimensions are 254 × 175 × 200 mm. Run a tape measure over your tray or compartment, including the height under the bonnet or lid.
• ✓ Orientation matters: positive on the left-hand side on this model. Stand facing the long side with the terminals nearest you to compare.

Your questions answered

Related products and ranges

Ordering the Optima RTU-4.2 online at baterias.online is simple once the code checks out. If in doubt about the fit, compare once more with the figures above.

• Other batteries for cars and vans
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