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Optima Batteries D34 8012-021 / Yellow Top – D750S

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Optima Batteries D34 8012-021 / Yellow Top – D750S

Original price was: $329.99.Current price is: $79.88.

OPTIMA YellowTop D34 8012-021 Battery is a 12V AGM dual-purpose battery designed for reliable starting power and deep-cycle performance. Built for vehicles with high electrical demands, this Group 34 YellowTop battery delivers strong cranking power, sealed maintenance-free construction, and excellent vibration resistance.

  • Model: D34 YellowTop
  • Part Number: 8012-021
  • Voltage: 12 Volt
  • Battery Type: AGM / Sealed Lead Acid
  • Group Size: 34
  • Terminal: Auto Post Only
  • Application: Automotive, truck, SUV, performance, and accessory-loaded vehicles

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Check the match before ordering

  • Part numberMatch the complete number, including letters and suffixes.
  • Electrical specificationConfirm voltage, chemistry and charging requirements.
  • Physical fitCompare dimensions, connector, polarity and terminal position.
SKU
8012-021 D34
Brand
N/A
Category

Description

Optima Yellow Top D34 8012-021 Battery

The Optima Yellow Top D34 8012-021 Battery is a high-performance 12V AGM battery built for both starting and deep-cycle use. This battery is a strong choice for vehicles with demanding electrical loads, including cars, trucks, commercial vehicles, and applications using accessories such as audio systems, lighting, electronics, winches, or other power-hungry equipment.

Unlike standard flooded batteries, the Optima Yellow Top D34 uses sealed AGM technology for dependable power, vibration resistance, and maintenance-free operation. Its Group 34 size, SAE post terminals, and strong cranking performance make it a popular replacement battery for many automotive and light truck applications.

Key Features

  • Part Number: 8012-021
  • Model: D34 Yellow Top
  • Voltage: 12 Volt
  • Battery Type: AGM / Sealed Lead Acid
  • Group Size: BCI Group 34
  • Cold Cranking Amps: 750 CCA
  • Cranking Amps: 870 CA
  • Capacity: 55Ah
  • Reserve Capacity: 120 minutes
  • Terminal Type: SAE Post / Type A
  • Approximate Dimensions: 10.06″ L x 6.88″ W x 7.88″ H
  • Approximate Weight: 42.9 lbs

Why Choose the Optima Yellow Top D34?

The Optima Yellow Top D34 is designed for customers who need more than a basic starting battery. It provides dependable starting power while also supporting repeated cycling, making it suitable for vehicles with extra electronics or higher accessory loads.

Common Applications

  • Automotive replacement battery
  • Light trucks and SUVs
  • Commercial vehicles
  • Vehicles with added electrical accessories
  • Performance and specialty vehicle applications

Note: Always confirm battery dimensions, terminal position, and required specifications before ordering.

Additional information

Brand

N/A
Product Type

Other
Product Name + Part Number

Optima Batteries D34 8012-021 / Yellow Top – D750S 8012-021 D34

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Ordering guidance

A reliable replacement starts with an exact match

Similar-looking batteries and accessories can use different voltage, chemistry, connectors or polarity. Verify the label and physical fit before purchase.

View the battery matching guide
Is matching the voltage enough?

No. Chemistry, dimensions, connector type, polarity, terminal position and charging requirements must also match.

Which number should I compare?

Use the complete model or part number printed on the original item. Include every prefix, suffix, dash and revision where shown.

What if my device model is not listed?

Do not assume compatibility from appearance alone. Compare the original part number and specifications or confirm the requirements in the device documentation.

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