Installation Tips

CONNECTING BATTERIES TOGETHER IN PARALLEL

If your battery application requires more starting power or reserve capacity you can install multiple batteries together in parallel by connecting the like terminals together (positive to positive / negative to negative). Each time you add a battery in parallel you increase the CCA and Reserve Capacity, the voltage remains at 12 volts. For example, two OPTIMA® RT U 4,2`s in parallel will provide 1630 A and 100 Ah. Three in parallel provides 2445 A and 150 Ah. If you have any questions about multiple battery installations, contact an appropriate auto electrical service center.

Suggestions for Connecting Batteries in Parallel

• Use batteries of identical make, model, and age.
• Make sure cable gauge is sufficient to handle the higher current flow.
• Prevent cables from shorting (do not allow them to rub against the vehicle body).
• Use only high quality connectors and clean all contacts prior to installation.
• Periodically check all connections for secure fit.
• If you are unsure of this procedure, contact your auto electrical service center.

BATTERY INSTALLATION TIPS

• Ensure that the battery is properly secured in the vehicle or equipment to prevent movement and vibration. Do not over tighten the hold down bracket as this can damage the plastic case.
• Connect high amperage accessories such as a winch to the top terminals only. Do NOT use the side terminals.
• Replace any cables and connectors that have corrosion, rust, or other damage.
• Do not install batteries in a non-ventilated or sealed compartment.
• Do not lift or handle the batteries by the terminals.
• Do not over tighten terminal bolts, the following values are recommended: SAE automotive terminal: 6-8 nm. Side terminal (3/8" nut): 8 nm. Threaded stud terminal: 14-20 nm.