Optima Yellowtop D34/78 Dual-Purpose 12 Volt Battery

Optima Yellowtop D34/78 Dual Purpose 12 Volt Battery

Cranking Power Meets Deep-Cycle Performance with SPIRALCELL Technology

Designed for those who demand more from their power source, the Optima Yellowtop D34/78 delivers both premium starting power and deep-cycle reliability. With OPTIMA’s exclusive SPIRALCELL TECHNOLOGY, this battery is built to withstand the rigours of performance driving, off-road conditions, and the demands of modern electrical systems. Whether you're running high-drain accessories, audio systems, or winches, the Yellowtop provides consistent, clean power and quicker recharging to keep you moving.

Key Features:

Dual-Purpose Design – true deep-cycle and starting power in one unit
Up to 2x Longer Life than traditional flat-plate batteries
15x More Vibration Resistant – superior durability in harsh environments
Lower Self-Discharge Rate – holds charge longer when not in use
High Cranking Power – 750 CCA for reliable starts in any conditions
Low Internal Resistance – consistent power output and rapid recharge
Maintenance-Free & Non-Spillable AGM design for clean, hassle-free use
Centrally Mounted Terminals – can be rotated for left- or right-hand installation

SPIRALCELL Technology Benefits:

Corrosion-resistant terminals
Solid moulded cell connectors for durability
Self-sealing safety valves
High-impact polypropylene case for rugged protection
High-purity lead grids for consistent performance and longer life
Absorbed Glass Mat (AGM) separators to prevent acid spills

Specifications:

Specification	Value
Cold Cranking Amps @ -18°C (CCA)	750
Reserve Capacity @ 25°C	120 minutes
Amp-Hour Capacity @ 20HR	55 Ah
Dimensions (L x W x H)	254 x 174 x 199 mm (10.0 x 6.9 x 7.8 in)
Weight	19.7 kg
Terminal Type	STD / Front
Terminal Position	Centrally Mounted (LH or RH usable)

Charging Guidelines:

Charging Method	Voltage & Details
Alternator Output	13.3 – 15.0 Volts
Battery Charger	13.8 – 15.0 Volts @ 10A for approx. 12–15 hours
Float Charge	13.2 – 13.8 Volts @ 1A max
Rapid Recharge	Max 15.6 Volts – no current limit (below 50°C temp)

Built for Power-Hungry Builds and Demanding Applications

The Optima Yellowtop D34/78 is the ideal battery for modern performance vehicles, 4x4s, and heavy-duty setups running aftermarket electronics or demanding accessories. With the ability to deliver power consistently and recover quickly, it's the go-to solution for those who expect their battery to perform under pressure.

Choose the Optima Yellowtop D34/78 Dual Purpose Battery and experience performance without compromise.