OPTIMA REDTOP 78-RTF4.2 STARTING BATTERY

🔋 OPTIMA REDTOP 78 AGM STARTING BATTERY – 12V 800CCA

High-Performance AGM Starting Battery – 800CCA, 50Ah C20 Capacity, 100-Minute Reserve Capacity & SpiralCell Technology

🚗 Built for strong, dependable engine starting, the Optima REDTOP 78 AGM Starting Battery combines 800CCA cranking performance with rugged AGM construction and Optima’s distinctive SpiralCell Technology.

Designed primarily as a starting battery, the REDTOP 78 delivers a strong burst of current for reliable engine start-up. Its 12V design, 50Ah C20 capacity and 100-minute reserve capacity make it suitable for compatible passenger vehicles, utes, 4WDs, performance vehicles and light commercial applications requiring dependable starting power.

The supplied model designation is 78 / RTF4.2, with Type S terminals. Its AGM construction is maintenance free and non-spillable, while the SpiralCell design uses 99.99% pure lead to support consistent power delivery, faster recharging and strong resistance to vibration.

The supplied product information states that REDTOP batteries can provide up to three times longer service life and up to 15 times greater vibration resistance than standard flooded batteries under applicable conditions.

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⚡ KEY FEATURES

⚡ 800CCA Starting Power
Provides high cranking output for dependable engine starting in compatible 12V vehicle systems.

🔋 Purpose-Built Starting Battery
Designed primarily for engine-starting applications where strong ignition power is the priority.

🌀 SpiralCell Technology
Optima’s spiral-wound internal construction is designed for consistent electrical output, strong power delivery and durability.

🧪 99.99% Pure Lead Construction
The supplied product information specifies 99.99% pure lead within the SpiralCell design.

🛡️ AGM Construction
Absorbent Glass Mat technology provides maintenance-free and non-spillable operation.

💪 Strong Vibration Resistance
The supplied information states up to 15 times greater vibration resistance than a standard flooded battery.

⏱️ Extended Service-Life Design
The supplied information states service life of up to three times longer than standard flooded batteries under applicable conditions.

🔄 Faster Recharging
Designed with strong recharge capability to help restore battery charge efficiently after engine starting.

🧰 Maintenance Free
No regular electrolyte topping-up or fluid maintenance is required.

💧 Completely Non-Spillable
AGM construction provides a non-spillable design under normal operating conditions.

↔️ Flexible Mounting
The supplied information states that the battery can be mounted in many positions, subject to correct installation requirements.

🔋 50Ah C20 Capacity
Provides a supplied 20-hour capacity rating of 50Ah.

⏳ 100-Minute Reserve Capacity
Supplied reserve capacity is approximately 100 minutes at a 25A load.

🔩 Type S Terminals
The supplied terminal specification is Type S. Confirm the terminal arrangement and polarity before purchase.

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⚡ HIGH-OUTPUT ENGINE STARTING PERFORMANCE

The Optima REDTOP 78 is designed first and foremost as a high-performance starting battery.

Its supplied 800CCA rating provides strong cranking output for applications where rapid and dependable engine starting is required.

This makes it a suitable choice for compatible vehicles operating in demanding conditions or environments exposed to regular vibration.

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🔋 800CCA COLD CRANKING POWER

Cold Cranking Amps: 800CCA

The CCA rating provides an indication of the battery’s ability to supply high current during engine starting under specified cold-temperature test conditions.

⚠️ IMPORTANT: Always confirm the required CCA against the vehicle manufacturer’s battery specification before installation.

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🌀 OPTIMA SPIRALCELL TECHNOLOGY

Optima REDTOP batteries use SpiralCell Technology rather than conventional flat-plate battery construction.

The supplied product information identifies:

• Spiral-wound cell construction
• 99.99% pure lead
• Strong starting-current delivery
• Consistent electrical performance
• Strong resistance to vibration
• Faster recharge capability

The spiral construction is designed to provide a robust internal battery structure for demanding starting applications.

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🛡️ AGM – ABSORBENT GLASS MAT CONSTRUCTION

The REDTOP 78 uses AGM battery technology.

AGM construction retains the electrolyte within absorbent glass mat separators rather than leaving free-flowing liquid inside the battery case.

This supports:

• Maintenance-free operation
• Non-spillable construction
• Strong vibration resistance
• Flexible mounting options
• High starting-current capability

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💪 HIGH VIBRATION RESISTANCE

The supplied product information states that Optima REDTOP batteries can be up to 15 times more resistant to vibration than standard flooded batteries.

This can be particularly useful in compatible 4WDs, utes and vehicles exposed to rough roads, corrugations or other demanding operating environments.

⚠️ IMPORTANT: Vibration resistance does not remove the need for a secure battery tray and appropriate hold-down system.

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⏱️ LONG-LIFE DESIGN

The supplied product information states that REDTOP batteries are designed to provide up to three times longer service life than standard flooded batteries under applicable operating conditions.

Actual battery life can vary depending on factors including:

• Charging-system performance
• Operating temperature
• Depth and frequency of discharge
• Vehicle electrical loads
• Storage conditions
• Installation quality
• Frequency of vehicle use

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🔄 FASTER RECHARGING

The REDTOP 78 is designed with faster recharge capability to help restore battery charge after starting.

This can help the battery recover efficiently when paired with a suitable charging system.

⚠️ IMPORTANT: Ensure the vehicle charging system is suitable for AGM battery technology and operates within the battery manufacturer’s required charging parameters.

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🔋 50AH C20 CAPACITY

Supplied C20 capacity: 50Ah

The C20 rating represents battery capacity measured over a 20-hour discharge test under specified conditions.

Although the REDTOP 78 carries an Ah capacity rating, it is designed primarily as a high-cranking starting battery rather than as a dedicated deep-cycle auxiliary battery.

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⏳ 100-MINUTE RESERVE CAPACITY

Supplied reserve capacity at 25A: Approximately 100 minutes

Reserve capacity provides an indication of how long the battery can support a specified electrical load under the applicable test conditions.

Actual runtime will vary according to electrical load, temperature, battery condition and state of charge.

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🚫 STARTING BATTERY – NOT A DEDICATED DEEP-CYCLE BATTERY

The Optima REDTOP 78 is designed primarily for engine-starting duties.

Its main strength is delivering high current for engine cranking rather than repeatedly supplying deep discharges to auxiliary equipment.

⚠️ IMPORTANT: Do not select the REDTOP 78 as a dedicated deep-cycle auxiliary battery unless the intended application has been confirmed as suitable. Repeated deep discharge is not its primary design purpose.

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🧰 MAINTENANCE-FREE OPERATION

The AGM construction means there is no routine requirement to top up electrolyte with water.

This simplifies maintenance compared with conventional serviceable flooded batteries.

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💧 NON-SPILLABLE CONSTRUCTION

The supplied product information describes the REDTOP 78 as completely non-spillable.

This provides greater installation flexibility than traditional flooded batteries containing free-flowing electrolyte.

⚠️ IMPORTANT: Always follow the battery and vehicle manufacturer’s requirements regarding mounting orientation, battery restraint, ventilation and electrical installation.

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🔩 TYPE S TERMINALS

The supplied terminal specification is:

Terminal type: Type S

Confirm the exact terminal arrangement, polarity, cable reach and connection requirements before purchase or installation.

⚠️ IMPORTANT: Do not select a battery using physical size and CCA alone. The Type S terminal arrangement must also be compatible with the vehicle.

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🏷️ MODEL 78 / RTF4.2

The supplied model designation is:

78 / RTF4.2

This model reference should be checked together with the dimensions, Type S terminal arrangement and electrical specifications when confirming replacement battery compatibility.

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🚗 SUITABLE APPLICATIONS

• 🚗 Compatible passenger vehicles
• 🛻 Utes
• 🚙 4WDs
• 🏁 Performance vehicles
• 🚐 Light commercial vehicles
• ⚡ High-starting-current applications
• 🔧 Replacement starting-battery applications
• 🛠️ High-vibration vehicle environments
• 🔋 Compatible AGM starting-battery upgrades
• 🔩 Applications requiring the supplied Type S terminal configuration

⚠️ IMPORTANT: Vehicle category alone does not confirm fitment. Battery dimensions, terminal arrangement, polarity, hold-down design, CCA requirement and charging-system compatibility must all be checked.

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📏 DIMENSIONS & WEIGHT

Length: 10.06in

Width: 7.31in

Height: 7.25in

Weight: 39.54lb

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📋 TECHNICAL SPECIFICATIONS

Brand: Optima

Product: REDTOP 78 AGM Starting Battery

Battery range: REDTOP

Model: 78 / RTF4.2

Battery application: Starting

Battery chemistry: AGM

Cell technology: SpiralCell

Supplied lead purity: 99.99%

Nominal voltage: 12V

Cold Cranking Amps: 800CCA

C20 capacity: 50Ah

Reserve capacity at 25A: 100 minutes

Terminal type: Type S

Maintenance: Maintenance free

Spill protection: Completely non-spillable according to supplied product information

Mounting: Mountable in many positions according to supplied product information

Recharge characteristic: Faster recharging capability

Supplied vibration-resistance claim: Up to 15 times greater than standard flooded batteries

Supplied service-life claim: Up to 3 times longer than standard flooded batteries

Length: 10.06in

Width: 7.31in

Height: 7.25in

Weight: 39.54lb

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⚠️ FITMENT CHECKLIST

Before purchasing the Optima REDTOP 78, confirm that the battery matches the physical and electrical requirements of your vehicle.

Check:

• 12V electrical-system compatibility
• Model 78 / RTF4.2 suitability
• Required battery dimensions
• Available battery-tray space
• Battery hold-down arrangement
• Type S terminal compatibility
• Positive and negative terminal positions
• Vehicle battery-cable reach
• Required 800CCA starting rating
• Required 50Ah capacity
• Required reserve capacity
• AGM charging-system compatibility
• Vehicle manufacturer battery specification
• Starting-battery versus deep-cycle requirements

⚠️ IMPORTANT: A matching physical size does not automatically confirm vehicle compatibility. Terminal type, polarity, hold-down arrangement and electrical specifications must also match.

⚠️ IMPORTANT: The REDTOP 78 is designed as a starting battery and should not automatically be substituted for a dedicated deep-cycle auxiliary battery.

⚠️ IMPORTANT: Secure the battery using an appropriate battery tray and restraint system before operating the vehicle.

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📦 WHAT’S INCLUDED?

• 🔋 1 × Optima REDTOP 78 AGM Starting Battery – 12V 800CCA

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❓ FREQUENTLY ASKED QUESTIONS

What is the Optima REDTOP 78?

The REDTOP 78 is a 12V AGM starting battery designed to provide strong cranking performance for compatible vehicle engine-starting applications.

What is the model designation?

The supplied model designation is 78 / RTF4.2.

How many CCA does the REDTOP 78 provide?

The supplied cold-cranking rating is 800CCA.

What is the battery capacity?

The supplied C20 capacity is 50Ah.

What is the reserve capacity?

The supplied reserve capacity is 100 minutes at a 25A load.

Is the REDTOP 78 a starting battery?

Yes. It is designed primarily for high-current engine-starting applications.

Can I use the REDTOP 78 as a deep-cycle auxiliary battery?

It is not designed primarily as a dedicated deep-cycle battery. Suitability should be confirmed before using it for repeated deep-discharge applications.

Is the REDTOP 78 AGM?

Yes. It uses Absorbent Glass Mat battery construction.

What is SpiralCell Technology?

SpiralCell is Optima’s spiral-wound internal cell construction designed to provide strong starting-current delivery, consistent performance and durability.

How pure is the lead?

The supplied product information specifies 99.99% pure lead.

Is the battery maintenance free?

Yes. Its AGM construction does not require routine electrolyte topping-up.

Is the REDTOP 78 non-spillable?

Yes. The supplied information describes the battery as completely non-spillable.

Can it be mounted in different positions?

The supplied information states that it can be mounted in many positions, subject to correct installation and manufacturer requirements.

Is the REDTOP 78 vibration resistant?

Yes. The supplied information states up to 15 times greater vibration resistance than standard flooded batteries.

Does it last longer than a standard flooded battery?

The supplied information states service life of up to three times longer than standard flooded batteries under applicable conditions.

Does the REDTOP 78 recharge quickly?

Faster recharging capability is listed among the supplied REDTOP benefits.

What terminal type does the REDTOP 78 use?

The supplied terminal specification is Type S.

Do I need to confirm the Type S terminals before purchase?

Yes. Confirm terminal type, position, polarity and cable compatibility before ordering.

What voltage is the battery?

The supplied nominal voltage is 12V.

How long is the REDTOP 78?

The supplied length is 10.06 inches.

How wide is it?

The supplied width is 7.31 inches.

How tall is it?

The supplied height is 7.25 inches.

How much does it weigh?

The supplied weight is 39.54lb.

Is it suitable for a 4WD?

It can be suitable for compatible 4WD starting applications where the physical dimensions, Type S terminal arrangement, 800CCA rating, hold-down system and charging requirements match the vehicle.

Is it suitable for a ute?

Yes, subject to the physical and electrical compatibility checks required for any replacement starting battery.

Can it be used in a performance vehicle?

Performance vehicles are included among the supplied applications, provided the complete battery specification matches the vehicle requirements.

Is it suitable for high-vibration environments?

Yes. Strong vibration resistance is one of the supplied REDTOP benefits, but the battery must still be securely restrained.

Can I replace a standard flooded battery with the REDTOP 78?

Potentially, but not automatically. Confirm physical dimensions, Type S terminal configuration, starting-current requirements, hold-down arrangement and AGM charging-system compatibility before changing battery type.

Does the vehicle charging system need to support AGM batteries?

Yes. The vehicle charging system should be suitable for the charging requirements of the AGM battery.

Can I select the battery based only on CCA?

No. Battery dimensions, voltage, terminal type, polarity, hold-down arrangement, capacity and charging-system compatibility also need to match the vehicle.

What should I check before ordering?

Confirm the 78 / RTF4.2 model requirement, 12V voltage, Type S terminal arrangement, physical dimensions, 800CCA rating, 50Ah capacity, 100-minute reserve capacity, battery restraint and AGM charging-system compatibility.

What comes with the battery?

The supplied package contents list one Optima REDTOP 78 AGM Starting Battery rated at 12V and 800CCA.

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🔋 HIGH-CRANKING AGM POWER FOR DEMANDING STARTING APPLICATIONS

Choose the Optima REDTOP 78 when you need a high-performance starting battery designed around strong ignition power, vibration resistance and maintenance-free AGM construction.

With 800CCA, 50Ah C20 capacity, 100-minute reserve capacity, SpiralCell Technology, 99.99% pure lead and rugged non-spillable construction, the REDTOP 78 is built for dependable engine starting in compatible vehicles.

Confirm the 78 / RTF4.2 model requirement, Type S terminal arrangement, physical fitment, CCA requirement and AGM charging-system compatibility before installation to ensure the battery is correct for your vehicle.