27DC Marine Battery – Group 27 12V Deep Cycle

Description

Looking for a reliable 27DC flooded marine battery that delivers long-lasting deep cycle performance? Our Group 27 12V deep cycle battery is engineered for dependable house power in boats.

Designed to handle repeated discharge and recharge cycles, this battery provides steady power for electronics, lighting, pumps and onboard accessories. Durable, vibration-resistant and maintenance-friendly, it’s the ideal Group 27 marine battery.

Compatible With / Replaces

The DC-27 replaces many batteries including:

• 27DC
• 27DC-180
• 27TMX
• M-27DC
• NAU27DC
• NAU27HDDC

Key Features

• Type: Lead-acid / flooded wet battery
• Cold Cranking Amps (CCA): 650
• Marine Cranking Amps (MCA): 800
• Reserve Capacity (RC): 180 minutes
• Durable: Vibration-Resistant Construction
• Reliable: Dependable Starting & House Power Support

Specifications

• Length 12″ / 304 mm
• Width 6.8″ / 173 mm
• Height 8.9″ / 225 mm
• Weight 45.5lbs / 20.7 kg
• Dual terminals – Auto Post (SAE) and Stud terminal

Applications

• Fishing boats and pleasure craft
• Sailboats and cabin cruisers
• RV house battery systems
• Travel trailers and campers
• Marine electronics, fish finders and lighting systems

Why Choose Our 27DC Flooded Marine Battery?

• Trusted local Canadian battery supplier
• Fresh inventory with strong performance
• Competitive pricing
• In-store pickup available
• Expert advice from real battery specialists

Frequently Asked Questions

How long does a 27DC marine battery last?

With proper maintenance and charging, a quality deep cycle marine battery typically lasts 3–5 years depending on usage and storage conditions.

What Does 27DC Mean?

A 27DC battery refers to Group 27 – Standard battery size (BCI) and DC – Deep Cycle

24DC vs 27DC Marine Battery – What’s the Difference?

27DC batteries are larger than a 24DC and they have a higher amp hour capacity and a longer runtime. If you have space for a 27DC it is a great upgrade.

27DC vs 31DC Marine Battery – What’s the Difference?

31DC batteries are slightly larger than the 27DC and have higher amp hour and run time.  The 31DC is a good choice for larger boats or higher power needs.

Can I use a 27DC battery for a trolling motor?

A 12V trolling motor system can use a Group 27 deep cycle battery however, we usually recommend a battery with higher Ah such as our 31DC. Verify your motor’s amp draw and runtime requirements before purchase. See our Trolling Motor Battery Guide for more details.

Is a 27DC battery good for RV use?

Yes. Group 27 flooded batteries are a great choice for your RV to use as  house batteries for lighting, water pumps and small appliances.

What’s the difference between starting and deep cycle marine batteries?

Starting batteries deliver short bursts of high power to start an engine. Deep cycle batteries provide steady power over longer periods and handle repeated discharge cycles.