Overview
Barron Equipment carries the Interstate Batteries SRM-27, a 12-volt deep cycle marine and RV battery built for powering onboard accessories, electronics, and appliances over extended periods. Interstate’s SRM Deep Cycle batteries offer strong, reliable power for comforts of home — like cooking appliances and lights — whether the motor is on or off.
This Group 27M battery delivers 600 cold cranking amps, 88 amp hours, and a 160-minute reserve capacity at 25 amps, giving you the sustained output needed for long days on the water or extended stays at the campsite. The flooded lead-acid construction provides proven deep-cycling performance, allowing you to drain and recharge the battery repeatedly over its service life.
Specifications
The SRM-27 is a flooded lead-acid deep cycle battery with top-post terminals. Below are the key electrical and physical specifications.
- Part Number: SRM-27
- Group Size: 27M
- Voltage: 12V
- Cold Cranking Amps (CCA): 600
- Cranking Amps (CA): 750
- Reserve Capacity (RC): 160 minutes at 25 amps
- Amp Hours (Ah): 88
- Dimensions: 12 3/4 in. L x 6 7/8 in. W x 9 in. H
- Terminal Type: Top post
- Technology: Flooded (wet cell)
- Warranty: 12-month free replacement
Applications
The SRM-27 is designed for marine vessels and recreational vehicles that rely on battery power for onboard systems. Common applications include running fish finders, trolling motors, navigation lights, live wells, stereos, coolers, and cabin lighting on boats. In RV applications, a bank of deep cycle batteries can supply house power for cooking appliances, interior lighting, water pumps, and entertainment systems while off-grid or at a campsite without shore power.
This battery also fits select vehicles including multiple model years of the Volkswagen EuroVan (1993–2002). Check the Group 27M fitment for your specific vehicle to confirm compatibility.
Deep Cycle vs. Starting Batteries
A deep cycle battery is built differently than a standard starting battery. Starting batteries deliver a short, high-amperage burst to crank an engine and are then immediately recharged by the alternator. Deep cycle batteries are designed to be discharged to a much lower state of charge and then recharged — over and over — without the performance degradation that would damage a standard starting battery. If your application requires sustained power delivery over hours rather than a quick burst at startup, a deep cycle battery is the right choice.
Maintenance and Care
The SRM-27 is a flooded lead-acid battery that requires periodic maintenance. Check the electrolyte level regularly and add distilled water as needed to keep the plates fully submerged. Avoid using tap water, as minerals can shorten the battery’s life. Keep the terminals clean and free of corrosion, and store the battery in a cool, dry location when not in use. Use a compatible battery charger or maintainer during extended storage periods to prevent deep discharge, which can permanently reduce capacity.