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Deep-Cycle Marine Batteries
Deep-Cycle Marine Batteries from Interstate
Designed to provide reliable power over an extended period, our deep-cycle marine batteries are ideal for powering your boat and all its accessories, whether your engine is running or not.
Our deep-cycle lineup is designed to be discharged and recharged repeatedly, offering durability and efficiency. Browse our lineup of marine-enhanced flooded batteries (EFB), starting RV marine (SRM) batteries and lithium deep-cycle marine batteries below.
Deep-Cycle Marine-Enhanced Flooded Batteries (EFB)
Our marine-enhanced flooded batteries provide the tough, long-lasting power for boating accessories and 2X the cycle life compared to standard flooded batteries. These maintenance-free batteries adeptly handle the high electrical demands of modern marine accessories, assuring top-tier performance and reliability.
Superior Starting Battery
Group 24M-EFB deep-cycle battery that blends standard starting power with deep-cycle durability to handle extra onboard electronics.
Starting/Heavy-Duty Battery
Group 27M EFB deep-cycle battery with 675 CCA and 90 Ah for excellent dual-purpose starting and heavy deep-cycling power.
Deep-Cycle Starting Reserve Marine (SRM) Batteries
Our SRM sealed batteries deliver dependable power for marine settings, functioning as dual-purpose deep-cycle batteries. With a minimum marine cranking amp rating of 690, they support vital onboard electronics and are chosen for their cost-effectiveness, performance and capacity to maintain consistent energy delivery critical for marine applications.
SRM Battery Features & Benefits:
- Requires periodic maintenance
- Reliable starting power
- Extended life cycle and faster recharge rate
- Versatile applications
Deep-Cycle Battery for Onboard Electronics
SRM-24 deep-cycle battery with 550 CCA, perfect for running lights and basic appliances when the engine is off.
Extended Reserve Capacity Deep-Cycle Battery
A larger Group 27M deep-cycle battery that provides extended reserve capacity for longer excursions.
Trolling Motor Deep-Cycle Battery
A high-capacity Group 31M deep-cycle battery offering 210 minutes of reserve capacity, built to keep trolling motors and heavy electronics running longer.
Deep-Cycle Battery for Large Vessels
Commercial-grade 4D deep-cycle battery engineered for large vessels, providing maximum reserve power and 1314 cold cranking amps for heavy-duty marine systems.
Lithium Deep-Cycle Marine Batteries
While lithium batteries may have a higher upfront cost, their long lifespan, efficiency and reliability make them a smart, cost-effective investment for boaters compared to traditional lead-acid batteries. Lithium battery technology comes with a built-in battery management system to prevent overcharging, enhancing safety and extending longevity. Offering prolonged battery life, they require less frequent charging, providing more uninterrupted time on the water.
Lithium Marine Battery Features & Benefits:
- High energy density and 10X longer cycle life than AGM batteries
- Less than half the weight of regular batteries
- 3X faster charging
- Safe against water immersion up to 1 meter for 30 minutes
- Wide temperature range for harsh conditions
- 10-year limited warranty
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Standard Lithium Battery
Lightweight 12V Group 24M size lithium deep-cycle battery, engineered for consistent boat power.
High-Capacity Lithium Battery
High-capacity 12V Group 27M lithium battery designed to maximize electronics runtime without adding weight.
Lithium Trolling Motor Battery
Specialized 24-volt Group 31M lithium deep-cycle battery built to deliver continuous power directly to advanced trolling motor setups.
Heavy-Duty Lithium Trolling Motor Battery
Heavy-duty 36-volt Group 31M lithium deep-cycle battery tailored to run high-thrust trolling motors all day.
Deep-Cycle Marine Battery Size Chart
Deep-cycle battery sizes and capacities can vary, making it crucial to choose the right battery size for your needs. Selecting the correct size ensures optimal performance, extending the life of your battery for consistent power delivery.
| Part Number |
SRP
USD |
Group Size
|
CCA
|
CA
|
RC
|
Ah
|
Length | Width | Height | Weight | Voltage | Wet/Dry |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M-24DC | $159.95 | 24M | 550 | 685 | 140 | N/A | 11 | 6 7/8 | 9 | 45.4 | 12 | W |
| M-27HDC | $159.95 | 27M | 675 | 840 | 160 | N/A | 12 3/4 | 6 7/8 | 9 | 54.2 | 12 | W |
| SRM-24 | $159.95 | 24M | 550 | 690 | 140 | 81 | 11 | 6 7/8 | 9 | 46.3 | 12 | W |
| SRM-27 | $169.95 | 27M | 600 | 750 | 160 | 88 | 12 3/4 | 6 7/8 | 9 | 50.3 | 12 | W |
| SRM-31 | $194.95 | 31M | 675 | 845 | 210 | 98 | 13 | 6 3/4 | 9 5/8 | 59.7 | 12 | W |
| SRM-4D | $359.95 | 4DM | 1314 | 1645 | 390 | 195 | 21 | 8 1/4 | 9 5/8 | 117.0 | 12 | W |
| 24M-EFB | $214.95 | 24M | 590 | 700 | 140 | 77 | 10 1/4 | 6 13/16 | 8 11/16 | 45.0 | 12 | W |
| 27M-EFB | $219.95 | 27M | 675 | 800 | 160 | 90 | 12 3/4 | 6 3/4 | 9 1/2 | 50.9 | 12 | W |
| M-24M-MDC | $134.95 | 24M | 400 | 500 | 120 | N/A | 10 1/4 | 6 3/4 | 8 11/16 | 28.4 | 12 | W |
| Part Number |
SRP
USD |
Group Size
|
CCA
|
CA
|
RC
|
Ah
|
Length | Width | Height | Weight | Voltage | Wet/Dry |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LI24M12V60 | $604.95 | 24M | 135 | 60 | 10 1/4 | 6 5/8 | 8 3/16 | 15.4 | 12 | D | ||
| LI27M12V100 | $804.95 | 27M | 240 | 100 | 12 1/16 | 6 5/8 | 8 3/16 | 26.9 | 12 | D | ||
| LI31M24V60 | $1104.95 | 31M | 135 | 60 | 13 | 6 3/4 | 8 7/16 | 28.7 | 24 | D | ||
| LI31M36V50 | $1204.95 | 31M | 103 | 50 | 13 | 6 3/4 | 8 7/16 | 32.0 | 36 | D |
New Lithium Battery Technology from Interstate®
Key features of Interstate lithium marine batteries:
MORE CYCLE LIFE
Lasts up to 10X longer
than AGM batteries
LIGHTWEIGHT
Less than half the weight
of regular batteries
FASTER RECHARGE
Recharges up to 3X faster
than regular batteries
HIGHER USABLE CAPACITY
Can use 100% of
its available capacity
CONSISTENT PERFORMANCE
Maintains consistent performance
throughout the entire discharge
MAINTENANCE FREE
Contains no battery acid
and is noncorrosive
10-YEAR WARRANTY
*Must be registered.
6-Year Warranty on Dual-Purpose
IPX-7 PROTECTION
Safe against water immersion
up to 1 meter for 30 minutes
| Feature | Flooded Lead-Acid | AGM | Interstate LiFeP04 |
|---|---|---|---|
| Cycle Life | 70-100 Cycles | 100-250 Cycles | 2,500 Cycles |
| Lifespan | 1-2 Yrs | 2-3 Yrs | 10+ Yrs |
| Weight (100Ah) | 60 lbs | 65 lbs | 27 lbs |
| Usable Capacity | 50% | 50-75% | 100% |
| Rechargeability | Standard | Standard | Up to 3x Faster |
| Continuous Discharge Current | No | No | Yes |
| Corrosive | Yes | Yes | No |
| Spillable | Yes | No | No |
| Maintenance Free | No | Yes | Yes |
Lithium Battery Accessories
At Interstate, we offer accessories to support and maintain your lithium battery systems. Contact your dealer for details. The lithium accessories lineup includes:
Chargers
Multi-Voltage/Multi-Chemistry Testers
Busbars & Terminal Blocks
Customizable Cables
Trays for Marine & RV Use
Warranty registration provides fast support, easy claims and ensures protection for your product.
Register NowGet comprehensive installation and usage instructions for your Interstate lithium battery. Explore the manual today.
Download ManualDeep-Cycle Marine Battery FAQs
Deep-cycle batteries are designed to provide continuous power over extended periods, making them ideal for powering trolling motors and supporting marine equipment. Unlike starter batteries that deliver short bursts of energy, these 12V lead-acid batteries are perfect for applications like recreational boating where consistent energy is crucial. Whether you're searching for reliable power boating accessories or need dependable marine equipment, deep-cycle batteries are essential.
Deep-cycle batteries last a variable amount of time, as they can be recharged and drained multiple times over their use. Manufacturers recommend avoiding discharging below 45% to prolong battery lifespan and maintain efficiency. Lithium marine batteries have impressed users with the potential to last up to 10 years, depending on proper care. Following expert battery advice and utilizing resources at Interstate All Battery Centers can help extend battery life and ensure it serves you well for long periods. Regularly checking connections and battery cables is advised for optimal maintenance.
To evaluate a deep-cycle battery's condition, apply a load test for 15 seconds at 50% of the battery's cold cranking amps (CCA) rating, then compare the voltage against load tester specifications. If the result falls below the minimal threshold, a replacement is necessary to prevent a dead battery. Employing a reliable battery charger and consistent testing can reveal issues early on, reducing the chance of severe problems. Be cautious of fast charging, which can boil the water out of the battery and cause damage. Consult troubleshooting guides suited to your SRM or EFB motor battery for more tailored advice and longevity tips.