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The Best Group 31 Agm Battery of 2023 – Reviewed and Top Rated
2,382 Reviews Scanned
- [DUAL PURPOSE]: The WEIZE BCI Group 31M is a dual purpose deep cycle sealed AGM marine and RV battery. It features an outstanding starting power and deep cycling capability for long-lasting power supply. Terminal： Left : Positive (+)-Red, Right: Negative (-)-Black.
- [HIGH PERFORMANCE]: Powered by advanced AGM technology, the WEIZE BCI Group 31M has a low internal resistance and high output power, offering a reliable power supply and a long battery life, 2x more cycle life than traditional flooded marine batteries.
- [QUICK CHARGE]: The WEIZE BCI Group 31M features quick charging, which allows it to charge up to five times faster, saving time and increasing efficiency. Please use a constant voltage of 14.4± 0.1V and a max current of 21A to charge the battery until the current has no change for 2 to 3 hours， But the maximum charging time must not exceed 24 hours.
- [LOW MAINTENANCE]: Being almost maintenance-free, the WEIZE BCI Group 31M reduces surface corrosion, proves more durable, and performs well against vibrations, has 20x more vibration resistance than flooded batteries.
- [SAFETY]: With a leak proof design and the presence of specialized valves, the WEIZE BCI Group 31M battery is very safe to use, ensuring a longer battery life. WEIZE dual-purpose Batteries are confidently guaranteed for 2 years! We aim for quality followed up with quality customer service, Amazon doesn't deal with the return of battery-related products, so please contact the seller directly. Weize support team is on standby for YOU.
- EXTREME DEEP-CYCLE POWER: This 2-in-1 pure lead AGM battery delivers high-cranking, extreme deep cycle power. It's designed to provide reliable force over an extended period to power your boat's motor & all of its accessories (appliances, trolling motor, audio systems, depth finders, fish locators, windlass). Not all marine batteries are the same - but this one exceeds the rest. Built with thick plates to allow the battery to continuously discharge power so you can recharge it many times over without decreasing its lifespan
- 2X-3X MORE BATTERY LIFE: Interstate's deep-cycle marine AGM batteries pack more power into each battery. The expected service life is 3x longer than conventional flooded batteries & 2x longer than an alloyed lead AGM battery. High-quality & unparalleled service make Interstate the preferred brand of marine dual-purpose batteries
- INTERSTATE TOUGH MARINE: Not all marine batteries are the same - but this one exceeds the rest. Built with thick plates to allow the battery to continuously discharge power so you can recharge it many times over, without decreasing its lifespan. This battery is not to replace batteries for automotive or mobility devices
- MOST TRUSTWORTHY POWER SOURCE: For 70 years, Interstate Batteries purpose has been to deliver the most Outrageously Dependable source of power to the world. Our customers come first, so we strive to create a positive experience for all. We recycle more batteries than we sell; please return to an Interstate All Battery Center near you so we can continue recycling
- Voltage: 12v - PHCA: 2150
- Cold Cranking Amps (CCA): 1150 - HCA: 1545
- Reserve Capacity in Minutes: 205
- Negative Terminal Location: Right Side
- Terminal: Group 31 with SS 3/8 inch threaded stud terminals and single external vent
- Renogy AGM Batteries: Trusted Worldwide, Exceptional Safety, Extreme Performance. Support series (No limitation), parallel (Up to 4P) connections.
- Leading AGM Batteries Renogy Deep Cycle AGM batteries have earned widespread trust with over 230,000 units sold worldwide in the past six years.
- Exceptionally Safe Chemistry and Minimal Troubleshooting Compared to batteries made of other chemistries, Renogy Deep Cycle AGM batteries offer exceptional safety due to their higher chemical stability. Their integrated internal structure and sealed design spare you from intricate internal troubleshooting, a feature not shared by lithium batteries.
- Better Performance at Extreme Temp The upgraded electrolyte formula ensures outstanding discharge performance within a temperature range of -4 to 140°F/ -20 to 60°C, surpassing that of other counterparts. You can use the battery at extreme temperatures without concerns about discharging performance in RVs or cabins.
- Power Most Appliances Featuring a 1100A (5 seconds) max discharge current and providing consistent, stable discharge, the battery can power most home appliances, including a fridge, microwave, CPAP, coffee maker, laptop, and more.
Last update on 2025-07-09 / Affiliate links / Product Titles, Images, Descriptions from Amazon Product Advertising API
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FAQ:
Q: What is a group 31 Marine Battery?
A: The Group 31 Marine Battery will measure almost 13″ long x 6.75″ wide x around 9.25″ tall. Some of these group 31 deep cycle batteries, such as LifeLine, will produce as much as 125 amp hour. The NorthStar dual purpose marine battery boasts 1370 marine cranking amps. The 31 series battery is a workhorse and meets the needs of serious anglers.
Q: What is group 31 truck battery?
A: Heavy-duty, commercial-grade Group 31 batteries are commonly used in ambulances, firetrucks and other heavy motorized vehicles that require a long-lasting, reliable battery to start the ignition.
Q: What are the dimensions of a marine battery?
A: Boat & Marine Batteries by Group Size Group Size U1 Battery | Approx* 7.71″ 5.18″ 6.89″ LxWxH [top] Group Size 22NF | Approx* 9.01″ 5.43″ 9.00″ LxWxH [top] Group Size 24 | Approx* 11.13″ 6.60″ 9.25″ LxWxH [top] Group Size 27 | Approx* 12.00″ 6.63″ 9.06″ LxWxH [top] Group Size 31 | Approx* 12.9″ 6.75″ 9.27″ LxWxH [top]
Q: What is an AMG battery?
A: An AGM (Absorbed Glass Mat) battery is a sealed, non-spillable maintenance free, valve regulated battery.