OPTIMA
Yellowtop D51R 450CCA 38Ah Deep Cycle Battery
Yellowtop D51R 450CCA 38Ah Deep Cycle Battery
SKU:8073-176
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🔋 OPTIMA YELLOWTOP D51R AGM DEEP CYCLE BATTERY – 12V 450CCA 38AH
Dual-Purpose AGM Battery – Reverse Terminal Layout, 450CCA Starting Power, 38Ah C20 Capacity, 66-Minute Reserve Capacity & SpiralCell Technology
🚗 Designed for vehicles with higher electrical demands, the Optima YELLOWTOP D51R AGM Deep Cycle Battery combines deep-cycle capability with dependable starting support in a compact 12V AGM battery.
The YELLOWTOP D51R is a dual-purpose battery designed for applications where the battery may need to support both engine starting and repeated accessory loads. With 450CCA, 38Ah C20 capacity and approximately 66 minutes of reserve capacity at 25A, it is suited to compatible cars, trucks and other vehicle installations requiring more than conventional starting-battery performance.
The D51R is the reverse-terminal version of the D51, making terminal orientation an important fitment consideration. Before purchase, confirm that the positive and negative post positions match the vehicle’s battery-cable layout.
Optima’s SpiralCell Technology uses 99.99% pure lead and spiral-wound construction to support consistent power delivery, strong vibration resistance and faster recharging.
Its AGM construction is maintenance free and non-spillable, while the supplied product information states that YELLOWTOP batteries can provide up to three times longer service life and up to 15 times greater vibration resistance than standard flooded batteries under applicable operating conditions.
⚡ KEY FEATURES
🔋 Dual-Purpose AGM Design
Designed to provide both starting support and deep-cycle performance in compatible high-demand vehicle applications.
🔁 Reverse Terminal D51R Layout
The D51R is the reverse-terminal version of the D51, so terminal orientation should be checked carefully before installation.
⚡ 450CCA Starting Power
Provides dependable cranking performance for compatible 12V starting systems.
🔌 38Ah C20 Capacity
Provides useful stored energy for vehicle accessories and higher electrical loads.
⏳ 66-Minute Reserve Capacity
Supplied reserve capacity is approximately 66 minutes at a 25A load.
🌀 SpiralCell Technology
Optima’s spiral-wound internal construction is designed for consistent electrical output and durability.
🧪 99.99% Pure Lead
The supplied product information specifies 99.99% pure lead within the SpiralCell construction.
🛡️ AGM Construction
Absorbent Glass Mat technology provides maintenance-free and non-spillable operation.
🔄 Faster Recharging
Designed with strong charge acceptance for demanding vehicle electrical systems.
💪 Strong Vibration Resistance
The supplied information states up to 15 times greater vibration resistance than standard flooded batteries.
⏱️ Extended Service-Life Design
The supplied information states service life of up to three times that of standard flooded batteries under applicable conditions.
🧰 Maintenance Free
No routine electrolyte topping-up or fluid maintenance is required.
💧 Non-Spillable AGM Design
The supplied product information describes the YELLOWTOP D51R as completely non-spillable.
↔️ Flexible Mounting
The battery can be mounted in many positions according to the supplied information, subject to correct fitment and installation requirements.
🚙 High Electrical Demand Applications
Designed for compatible vehicles carrying greater electrical loads or requiring deeper cycling capability.
🚦 Start-Stop Application Potential
The supplied information identifies compatible start-stop applications as a possible use, subject to confirming the exact vehicle battery specification.
🔁 D51R REVERSE TERMINAL CONFIGURATION
The D51R is the reverse-terminal version of the YELLOWTOP D51.
This means terminal orientation is a critical part of correct battery fitment.
Before purchase or installation, compare the positive and negative terminal positions with the existing battery and vehicle cable arrangement.
⚠️ IMPORTANT: A D51 and D51R may share similar electrical specifications and dimensions, but terminal orientation can differ. Confirm the required positive and negative post positions before ordering.
🔋 DUAL-PURPOSE STARTING & DEEP-CYCLE PERFORMANCE
The Optima YELLOWTOP D51R is designed differently from a conventional starting-only battery.
Its dual-purpose design allows it to provide engine-starting support while also tolerating repeated electrical loads more effectively than a battery intended purely for short starting bursts.
This makes it useful for compatible vehicles equipped with additional accessories or systems that place greater demand on the battery.
⚡ 450CCA STARTING POWER
Cold Cranking Amps: 450CCA
The supplied 450CCA rating provides starting support for compatible vehicle applications while retaining the battery’s deep-cycle capabilities.
⚠️ IMPORTANT: Confirm the vehicle manufacturer’s minimum CCA requirement before selecting a replacement battery.
🔌 38AH C20 CAPACITY
Supplied C20 capacity: 38Ah
The C20 rating represents battery capacity measured over a 20-hour discharge test under specified conditions.
This stored-energy capacity allows the D51R to support compatible accessory loads and higher-demand vehicle electrical systems in addition to starting duties.
⏳ 66-MINUTE RESERVE CAPACITY
Supplied reserve capacity at 25A: Approximately 66 minutes
Reserve capacity indicates how long the battery can supply a specified load under the relevant test conditions.
Actual operating time will vary according to electrical load, temperature, battery condition and state of charge.
🌀 OPTIMA SPIRALCELL TECHNOLOGY
Optima YELLOWTOP batteries use SpiralCell Technology rather than conventional flat-plate construction.
The supplied product information identifies:
- Spiral-wound cell construction
- 99.99% pure lead
- Strong starting performance
- Deep-cycle capability
- Consistent power delivery
- Strong vibration resistance
The spiral construction is designed to provide a robust internal structure suitable for demanding automotive use.
🛡️ AGM – ABSORBENT GLASS MAT CONSTRUCTION
The YELLOWTOP D51R 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
- Deep-cycle performance
- Strong vibration resistance
- Flexible installation options
- High-current delivery
💪 HIGH VIBRATION RESISTANCE
The supplied product information states that Optima YELLOWTOP batteries can be up to 15 times more vibration resistant than standard flooded batteries.
This can make the D51R particularly useful in compatible vehicles exposed to rough roads, vibration and demanding operating environments.
⚠️ IMPORTANT: Strong vibration resistance does not eliminate the need for a secure battery tray and appropriate hold-down system.
⏱️ LONG-LIFE DESIGN
The supplied information states that YELLOWTOP batteries are designed to provide up to three times longer service life than standard flooded batteries under applicable conditions.
Actual battery service life will vary according to factors including:
- Depth of discharge
- Charging-system performance
- Operating temperature
- Electrical load
- Frequency of cycling
- Storage conditions
- Installation quality
🔄 FAST RECHARGE CAPABILITY
The YELLOWTOP D51R is designed with faster recharge capability to help restore stored energy after starting or accessory use.
This is particularly useful in high-demand vehicle systems where the battery may be cycled more frequently.
⚠️ IMPORTANT: Ensure the vehicle alternator, charger or battery-management system is suitable for AGM battery charging requirements.
🚦 START-STOP APPLICATIONS
The supplied product information identifies compatible start-stop applications among the possible uses for the YELLOWTOP D51R.
However, start-stop vehicles can have specific requirements relating to battery chemistry, capacity, CCA, terminal layout, battery monitoring and replacement procedures.
⚠️ IMPORTANT: Do not assume the YELLOWTOP D51R is suitable for every start-stop vehicle. Confirm the exact factory battery specification and vehicle requirements before replacement.
🔌 DESIGNED FOR HIGH ELECTRICAL DEMANDS
The YELLOWTOP range is designed for applications where electrical loads can exceed those of a basic starting-only vehicle system.
Compatible uses may include vehicles fitted with:
- 🎧 Audio systems
- 💡 Additional lighting
- 🔌 Electrical accessories
- ⚡ Higher standby electrical loads
- 🚦 Compatible start-stop systems
- 🔋 Applications requiring repeated battery cycling
Actual suitability depends on the complete battery, charging and electrical-system design.
🧰 MAINTENANCE-FREE OPERATION
The AGM design eliminates the routine electrolyte topping-up associated with serviceable flooded batteries.
This provides convenient maintenance-free operation under normal use.
💧 NON-SPILLABLE CONSTRUCTION
The supplied product information describes the YELLOWTOP D51R as completely non-spillable.
This provides greater installation flexibility than conventional flooded batteries containing free liquid electrolyte.
⚠️ IMPORTANT: Always follow the battery and vehicle manufacturer’s requirements for battery orientation, restraint, ventilation and installation.
🔩 SAE TYPE A TERMINALS
The supplied terminal type is:
SAE – Type A
The D51R’s reverse-terminal orientation makes it particularly important to confirm positive and negative post positions before installation.
🚗 SUITABLE APPLICATIONS
- 🚗 Compatible cars
- 🛻 Compatible trucks and light commercial vehicles
- 🚦 Compatible start-stop vehicles
- 🔌 Vehicles with higher electrical loads
- 🔋 Deep-cycle automotive applications
- 🎧 Vehicle audio and accessory systems
- 🛠️ High-vibration environments
- 🔧 Compatible AGM replacement-battery applications
- 🔁 Applications requiring the D51R reverse-terminal configuration
⚠️ IMPORTANT: Vehicle category alone does not confirm fitment. Battery dimensions, terminal orientation, polarity, hold-down arrangement, CCA, capacity and charging-system requirements must all be checked.
📏 DIMENSIONS & WEIGHT
Length: Approximately 236.5mm / 23.65cm
Width: Approximately 128.5mm / 12.85cm
Height: Approximately 227.1mm / 22.71cm
Weight: Approximately 12.75kg
📋 TECHNICAL SPECIFICATIONS
Brand: Optima
Product: YELLOWTOP D51R AGM Deep Cycle Battery
Model: D51R
Battery range: YELLOWTOP
Application: Car / Truck
Battery application: Dual-purpose starting and deep cycle
Battery chemistry: AGM
Cell technology: SpiralCell
Supplied lead purity: 99.99%
Nominal voltage: 12V
Cold Cranking Amps: 450CCA
C20 capacity: 38Ah
Reserve capacity at 25A: Approximately 66 minutes
Terminal type: SAE – Type A
Terminal configuration: Reverse-terminal D51R layout
Maintenance: Maintenance free
Spill protection: Non-spillable AGM construction
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: Approximately 236.5mm
Width: Approximately 128.5mm
Height: Approximately 227.1mm
Weight: Approximately 12.75kg
⚠️ FITMENT CHECKLIST
Before purchasing the Optima YELLOWTOP D51R, confirm the battery matches the physical, electrical and charging requirements of your vehicle.
Check:
- 12V electrical-system compatibility
- Correct D51R reverse-terminal orientation
- Positive terminal location
- Negative terminal location
- Required battery dimensions
- Available battery-tray space
- Battery hold-down style
- SAE Type A terminal compatibility
- Battery-cable reach
- Required CCA rating
- Required Ah capacity
- Required reserve capacity
- AGM charging-system compatibility
- Factory start-stop battery requirements where applicable
- Battery monitoring or registration requirements where applicable
- Vehicle manufacturer battery specification
- Required starting and deep-cycle duty
⚠️ IMPORTANT: The D51R is the reverse-terminal version of the D51. Confirm the terminal orientation before purchase.
⚠️ IMPORTANT: A matching physical battery size does not automatically confirm vehicle compatibility. Check the complete electrical and fitment specification before installation.
⚠️ IMPORTANT: Not all start-stop systems use the same battery specification. Confirm compatibility before replacing an original start-stop battery.
⚠️ IMPORTANT: Secure the battery using an appropriate battery tray and restraint system before operating the vehicle.
📦 WHAT’S INCLUDED?
- 🔋 1 × Optima YELLOWTOP D51R AGM Deep Cycle Battery – 12V 450CCA 38Ah
❓ FREQUENTLY ASKED QUESTIONS
What is the Optima YELLOWTOP D51R?
The YELLOWTOP D51R is a 12V dual-purpose AGM battery designed to provide both starting support and deep-cycle performance in compatible high-demand automotive applications.
What is the difference between the D51 and D51R?
The supplied product information identifies the D51R as the reverse-terminal version of the D51. Confirm positive and negative terminal positions before ordering.
Why does terminal orientation matter?
The battery cables must be able to reach the correct positive and negative posts without being stretched, crossed or incorrectly connected. The D51R should only be used where its terminal arrangement matches the intended installation.
Is the YELLOWTOP D51R a deep-cycle battery?
Yes. The supplied product information identifies it as an AGM deep-cycle battery with dual-purpose capability for applications also requiring starting support.
Can the D51R also start an engine?
Yes. It carries a supplied starting rating of 450CCA for compatible applications.
How many CCA does the YELLOWTOP D51R provide?
The supplied cold-cranking rating is 450CCA.
What is the battery capacity?
The supplied C20 capacity is 38Ah.
What is the reserve capacity?
The supplied reserve capacity is approximately 66 minutes at a 25A load.
Is it a 12V battery?
Yes. The supplied nominal voltage is 12V.
Is the YELLOWTOP D51R 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 power delivery, deep-cycle capability and durability.
How pure is the lead?
The supplied product information specifies 99.99% pure lead.
Is the battery maintenance free?
Yes. Routine electrolyte topping-up is not required.
Is it non-spillable?
Yes. The supplied information describes the AGM construction as completely non-spillable.
Can the D51R be mounted in different positions?
The supplied information states that it can be mounted in many positions. Installation must still comply with the battery and vehicle manufacturer’s requirements.
Is the YELLOWTOP D51R vibration resistant?
Yes. The supplied information states up to 15 times greater vibration resistance than standard flooded batteries.
Does it have a longer service life 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 it recharge quickly?
Faster recharging capability is listed among the supplied YELLOWTOP product benefits.
Is it suitable for high electrical loads?
Yes. The YELLOWTOP D51R is specifically positioned for compatible vehicles with higher electrical demands.
Can it support vehicle accessories?
Its deep-cycle capability can make it suitable for compatible accessory loads, subject to the total electrical load, battery capacity and charging-system design.
Is it suitable for car audio systems?
Audio and accessory power systems are included among the supplied applications, subject to correct battery and charging-system sizing.
Can it be used in a start-stop vehicle?
The supplied information includes compatible start-stop applications. However, the exact factory battery specification must be checked because not all start-stop vehicles use the same battery type or rating.
Can I replace any start-stop battery with a D51R?
No. Confirm battery chemistry, physical dimensions, CCA, capacity, reverse-terminal layout and any battery-management or registration requirements before replacement.
What terminal type does it use?
The supplied specification lists SAE Type A terminals.
Are the terminals reversed compared with a D51?
Yes. The supplied information specifically identifies the D51R as the reverse-terminal version of the D51.
How long is the YELLOWTOP D51R?
Approximately 236.5mm.
How wide is it?
Approximately 128.5mm.
How tall is it?
Approximately 227.1mm.
How much does it weigh?
The supplied weight is approximately 12.75kg.
Is it suitable for a car?
Yes, compatible car applications are included in the supplied information, provided the complete battery specification and terminal orientation match the vehicle.
Is it suitable for a truck?
Compatible truck applications are also included in the supplied information, subject to correct voltage, physical fitment, terminal orientation and starting requirements.
Is it suitable for high-vibration environments?
Yes. Strong vibration resistance is one of the supplied YELLOWTOP benefits, but the battery must still be securely restrained.
Can I use the D51R purely as an auxiliary battery?
Its deep-cycle design can support compatible auxiliary-style loads, but suitability depends on the required capacity, discharge depth, charging system and expected runtime.
Can I substitute a D51 for a D51R?
Not automatically. The key supplied difference is terminal orientation. Confirm which layout your vehicle requires before substituting one model for the other.
What should I check before ordering?
Confirm the D51R reverse-terminal arrangement, physical dimensions, 450CCA requirement, 38Ah capacity, reserve capacity, SAE terminals, polarity, battery tray, hold-down arrangement, AGM charging compatibility and the vehicle manufacturer’s battery specification.
What comes with the battery?
The supplied package contents list one Optima YELLOWTOP D51R AGM Deep Cycle Battery rated at 12V, 450CCA and 38Ah.
🔋 DUAL-PURPOSE AGM POWER WITH THE D51R REVERSE TERMINAL LAYOUT
Choose the Optima YELLOWTOP D51R when you need a compact AGM battery capable of supporting dependable starting and deeper cycling while matching a compatible reverse-terminal installation.
With 450CCA, 38Ah C20 capacity, 66-minute reserve capacity, SpiralCell Technology, 99.99% pure lead, vibration-resistant construction and faster recharge capability, the YELLOWTOP D51R is designed for vehicles that demand more from their battery than conventional starting alone.
Confirm the D51R terminal orientation, physical fitment, CCA requirement and charging-system compatibility before installation to ensure the battery is appropriate for your vehicle.
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