Discover D31A 12V 120Ah Deep Cycle AGM Battery - D31A-120D

Overview

The Discover D27A & D31A Deep Cycle AGM Battery is purpose-built for demanding mobile applications that experience frequent vibration and high power requirements. Ideal for RV, caravan, marine, and home medical equipment, these batteries are trusted by recreational vehicle owners and marine users worldwide.

Unlike most deep cycle VRLA batteries that use ABS cases, Discover D27A and D31A batteries utilise a polypropylene (PP) case—the same material used in automotive batteries—offering superior mechanical strength, thermal stability, and chemical resistance. This makes them suitable for under-bonnet installations and harsh operating environments.

Key Features

Enhanced Plate & Alloy Technology

• Thick plates with graphite-enhanced alloys
• Maximum runtime delivered over the battery’s operational life
• Consistent amp-hour capacity across repeated cycles

Advanced Intercell Welding

• Automated through-the-partition weld construction
• Improved intercell weld consistency
• Lower internal resistance and improved high-current capability

Polypropylene Case Design

• High heat resistance and mechanical durability
• Excellent resistance to chemicals and heat distortion
• High-pressure relief valves reduce water loss and extend service life
• Integrated flame arrestors enhance operational safety

Reliable & Safe Operation

• Valve Regulated Lead-Acid (VRLA) AGM design
• Maintenance-free, non-spillable, and no-gassing operation
• Spark and explosion tested to SAE J1495