Best Group 31 Deep Cycle Marine Battery in 2025
Updated on July 2025
#1
Recommended
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- Designed for both starter and deep cycle applications, delivering 1000 CCA and a high continuous discharge rate suitable for high amp uses like trolling motors.
- LiFePO4 battery lasts over 2500 cycles at 100% depth of discharge, significantly outlasting traditional lead-acid batteries which typically last around 500 cycles at 50% discharge.
- Features an automatic Battery Management System (BMS) that safeguards against overcharging, discharging, and short circuits; resets automatically for added convenience.
- Constructed from non-toxic, environmentally safe materials, reducing risks associated with overheating or fire; can be mounted in any orientation without concern for acid leakage.
- Backed by a 10-year warranty, emphasizing long-term reliability and customer support; recommend using a dedicated lithium battery charger.
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- Designed for both starter and deep cycle applications, delivering 1000 CCA and a high continuous discharge rate suitable for high amp uses like trolling motors.
- LiFePO4 battery lasts over 2500 cycles at 100% depth of discharge, significantly outlasting traditional lead-acid batteries which typically last around 500 cycles at 50% discharge.
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#2
Value for Money
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- BCI 31M AGM/SLA rechargeable deep cycle marine battery with [+ -] terminals.
- Group 31M 12V 105AH AGM battery with 700CCA, featuring a sealed design for corrosion resistance and maintenance-free operation.
- Compatible with multiple models including Optima 8052-161 D31M, XMC-31, GL100, and more.
- OEM replacement suitable for personal watercraft, boats, marine applications, and RVs.
- Durable and reliable performance for various outdoor activities.
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- BCI 31M AGM/SLA rechargeable deep cycle marine battery with [+ -] terminals.
- Group 31M 12V 105AH AGM battery with 700CCA, featuring a sealed design for corrosion resistance and maintenance-free operation.
- Compatible with multiple models including Optima 8052-161 D31M, XMC-31, GL100, and more.
- OEM replacement suitable for personal watercraft, boats, marine applications, and RVs.
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#3
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- 12V dual purpose marine/RV battery
- 100Ah capacity for extended power
- 825CCA for reliable starting performance
- Pure lead AGM technology for durability
- Designed for Group Size 31M applications
- Compatible with various boats and RVs
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- 12V dual purpose marine/RV battery
- 100Ah capacity for extended power
- 825CCA for reliable starting performance
- Pure lead AGM technology for durability
- Designed for Group Size 31M applications
- Compatible with various boats and RVs
#4
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- Dimensions: 12.99 x 6.73 x 8.43 inches. Designed with absorbent glass mat (AGM) technology, ensuring no acid leakage and minimal maintenance.
- Operating temperature range: Charging from 14℉ (-10℃) to 122℉ (50℃) and discharging from 5℉ (-15℃) to 122℉ (50℃), with optimal performance at 77°F (25℃). Max discharge current of 1100A for 5 seconds.
- Lower self-discharge rate of 1-3% per month, allowing for extended storage periods before recharging. Maintaining a charged state and suitable temperature helps extend battery life.
- Suitable for various applications including RVs, wheelchairs, scooters, golf carts, solar power systems, and UPS setups, backed by reliable AGM technology.
- 1-year warranty with customer support available for inquiries and assistance, as Amazon does not handle battery returns.
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- Dimensions: 12.99 x 6.73 x 8.43 inches. Designed with absorbent glass mat (AGM) technology, ensuring no acid leakage and minimal maintenance.
- Operating temperature range: Charging from 14℉ (-10℃) to 122℉ (50℃) and discharging from 5℉ (-15℃) to 122℉ (50℃), with optimal performance at 77°F (25℃). Max discharge current of 1100A for 5 seconds.
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#5
29% Off
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- Renogy AGM batteries allow series and parallel connections, supporting configurations with no limitations and up to 4 batteries in parallel.
- With over 230,000 units sold globally in six years, Renogy Deep Cycle AGM batteries have established a strong reputation for reliability.
- The AGM design of these batteries provides exceptional safety and stability, minimizing the need for troubleshooting compared to lithium batteries.
- These batteries maintain excellent performance in extreme temperatures, operating effectively between -4 to 140°F (-20 to 60°C), suitable for use in RVs and cabins.
- With a maximum discharge current of 1100A for 5 seconds, these batteries can power a variety of home appliances, including refrigerators and laptops.
- Renogy Deep Cycle AGM batteries feature a low self-discharge rate of under 3% per month at 77℉ (25℃), allowing for long shelf life without frequent recharging.
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- Renogy AGM batteries allow series and parallel connections, supporting configurations with no limitations and up to 4 batteries in parallel.
- With over 230,000 units sold globally in six years, Renogy Deep Cycle AGM batteries have established a strong reputation for reliability.
- The AGM design of these batteries provides exceptional safety and stability, minimizing the need for troubleshooting compared to lithium batteries.
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#6
12% Off
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- Compact dimensions (12.9 x 6.6 x 8.5 inches) and lightweight at 22 pounds, designed to fit perfectly in BCI Group 31 battery boxes while offering a full 1280Wh storage capacity.
- Equipped with a built-in Battery Management System (BMS) that safeguards against overcharging and over-discharging, and features a self-discharge rate support and a thermal cutoff to prevent overheating.
- Delivers 1280Wh of usable energy, providing up to 100A continuous discharge current, significantly outperforming equivalent-sized SLA batteries.
- Can be configured in parallel or series for increased capacity, allowing up to 400Ah or 48V systems, suitable for various applications including RVs and solar setups.
- Long lifespan with 4000 to 15000 deep cycles depending on depth of discharge, outlasting traditional lead-acid batteries significantly.
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- Compact dimensions (12.9 x 6.6 x 8.5 inches) and lightweight at 22 pounds, designed to fit perfectly in BCI Group 31 battery boxes while offering a full 1280Wh storage capacity.
- Equipped with a built-in Battery Management System (BMS) that safeguards against overcharging and over-discharging, and features a self-discharge rate support and a thermal cutoff to prevent overheating.
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#7
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- This pure lead AGM battery offers both high-cranking and deep cycle power, ensuring reliable operation for your boat's motor and accessories.
- Designed to last, it provides up to three times the lifespan of conventional flooded batteries and twice that of alloyed lead AGM batteries.
- The construction features thick plates that allow for continuous power discharge and multiple recharges without reducing lifespan.
- Interstate Batteries has a long-standing reputation for dependability, with a commitment to customer service and battery recycling.
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- This pure lead AGM battery offers both high-cranking and deep cycle power, ensuring reliable operation for your boat's motor and accessories.
- Designed to last, it provides up to three times the lifespan of conventional flooded batteries and twice that of alloyed lead AGM batteries.
- The construction features thick plates that allow for continuous power discharge and multiple recharges without reducing lifespan.
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#8
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- Triple Protection BMS with Low Temperature Cut-off ensures safe operation in harsh marine environments, preventing overcharging, over-discharging, and short circuits.
- Optimized for trolling motors, offering superior voltage spike protection and robust shock resistance for reliable performance in rough waters.
- High-quality Grade A LiFePO4 cells provide greater energy density and a lifespan of up to 10 years with over 4000 recharge cycles, making it an ideal replacement for lead-acid batteries.
- Automatic overload protection allows for safe self-recovery, eliminating manual interventions during overload situations.
- Expandable configuration allows for building a larger 48V energy system, compatible with various applications including RVs and solar energy storage.
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- Triple Protection BMS with Low Temperature Cut-off ensures safe operation in harsh marine environments, preventing overcharging, over-discharging, and short circuits.
- Optimized for trolling motors, offering superior voltage spike protection and robust shock resistance for reliable performance in rough waters.
- High-quality Grade A LiFePO4 cells provide greater energy density and a lifespan of up to 10 years with over 4000 recharge cycles, making it an ideal replacement for lead-acid batteries.
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#9
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- 12V 100Ah sealed lead acid deep cycle battery; includes screws, no wire harness or mounting.
- Dimensions: 12.99 x 6.73 x 8.43 inches; compatible with UB121000 and Renogy 100Ah models. Maintenance-free and spill-proof design.
- Suitable for various applications: wheelchairs, scrubbers, generators, trolling motors, and commercial use in schools and healthcare.
- Versatile use for electric vehicles, golf carts, industrial tools, emergency lighting, and security systems.
- Customer support is available through the seller for battery-related inquiries; returns are managed directly with the seller.
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- 12V 100Ah sealed lead acid deep cycle battery; includes screws, no wire harness or mounting.
- Dimensions: 12.99 x 6.73 x 8.43 inches; compatible with UB121000 and Renogy 100Ah models. Maintenance-free and spill-proof design.
- Suitable for various applications: wheelchairs, scrubbers, generators, trolling motors, and commercial use in schools and healthcare.
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#10
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- 12V trolling motor battery with 1.28kWh capacity, supporting loads up to 1536W and continuous discharge of 120A, plus Bluetooth connectivity for monitoring.
- WEIZE Lithium Iron Phosphate Batteries are guaranteed for 10 years, with dedicated customer service for any battery-related inquiries.
- LiFePO4 batteries last over 2000 cycles at full discharge and 8000 cycles at 50%, offering significantly longer life than traditional lead-acid batteries, with cold weather protection included.
- Features a built-in 120A Battery Management System (BMS) that safeguards against overcharging, over-discharging, and temperature extremes, automatically reactivating when necessary.
- Lightweight lithium batteries provide better energy density at one-third the weight of lead-acid batteries, suitable for deep cycle applications like boating, camping, and solar systems, requiring a dedicated lithium charger.
- Constructed from non-toxic, safe materials, our LiFePO4 battery boasts high thermal stability and can be mounted in any position, with user guidance available for optimal use.
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- 12V trolling motor battery with 1.28kWh capacity, supporting loads up to 1536W and continuous discharge of 120A, plus Bluetooth connectivity for monitoring.
- WEIZE Lithium Iron Phosphate Batteries are guaranteed for 10 years, with dedicated customer service for any battery-related inquiries.
- LiFePO4 batteries last over 2000 cycles at full discharge and 8000 cycles at 50%, offering significantly longer life than traditional lead-acid batteries, with cold weather protection included.
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