Optima Batteries

Optima colours

• Red Top: starting batteries for cars.
• Yellow Top: dual-purpose cycling for vehicles packed with accessories.
• Blue Top: boats, for cranking and on-board supply.

Finding your Optima

References such as RTC-4.2 or BTDC-5.5 indicate colour, terminal style and capacity class. Compare the terminal type with your vehicle before ordering. Background on the maker: Optima overview.

Charging an Optima

Spiral-cell batteries are sealed and accept charge quickly, but they need an AGM-compatible charger. If one has been deeply discharged, a charger able to start from low voltage may be needed.