BlueMax Marine Group 24
Features
Features
8 Year Warranty
8 Year Warranty
BlueMax Marine Group 24 is backordered and will ship as soon as it is back in stock.
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Reliable Marine Starting and Deep Cycle Power in One Compact Footprint
- Delivers dual-purpose performance with 800 Cold Cranking Amps (CCA) for engine starts and 80Ah of deep cycle capacity.
- Provides up to 4,000 charge cycles at 80% Depth of Discharge, drastically outlasting traditional lead-acid alternatives.
- Protects your investment natively with an integrated Battery Management System (BMS) featuring active cell balancing and low-temperature charging cutoff.
- Fits seamlessly into existing Group 24 battery trays for a straightforward drop-in installation.
What This Upgrade Fixes
Traditional lead-acid marine batteries struggle to balance deep cycling with high-amp engine starting. They degrade quickly, suffer permanent damage when drawn down too far, and require constant maintenance. This LiFePO4 upgrade eliminates battery anxiety by providing robust, consistent voltage through the entire discharge cycle, heavy-duty starting power, and maintenance-free operation in a rugged, IP67-rated waterproof enclosure.
What's Included
[FILL: WHAT'S INCLUDED]
Compatibility
Designed as a universal Group 24 replacement. Ideal for marine applications, RV house battery banks, and off-grid solar energy systems. Compatible with standard 12V setups requiring reliable deep cycling and an engine starting current of up to 800 CCA.
Installation
Time Estimate: 15 to 30 minutes
Difficulty: Easy
Tools Needed: Basic wrench or socket set
This is a direct-fit Group 24 replacement. Disconnect the terminals on your old battery, lift it out, secure the BlueMax unit into your existing battery tray, and reconnect your power and ground cables. No specific wiring modifications are required for a standard swap.
Key Specifications
| Chemistry | Lithium Iron Phosphate (LiFePO4) |
| Nominal Voltage | 12.8V |
| Capacity | 80 Ah (960Wh) |
| Cold Cranking Amps | 800 CCA |
| Cycle Life | 4,000 cycles at 80% DoD |
| Dimensions | Group 24 Size Replacement |
| Operating Temperature | Charging: 32°F to 113°F (0°C to 45°C) Discharging: -4°F to 140°F (-20°C to 60°C) |
| Safety & Certifications | UL 1642, UL 1973, CE, RoHS, UN38.8, IP67 |
| Warranty | 8-Year Warranty |
Frequently Asked Questions
Can I use this battery to start my boat engine?
Yes. Unlike traditional deep cycle lithium batteries, this unit is built for dual-purpose applications and safely provides 800 CCA for reliable engine starting alongside its deep cycle capabilities.
How does this battery handle cold weather?
The advanced BMS features a low-temperature charging cutoff. This prevents the system from accepting a charge when internal temperatures drop below freezing (32°F), effectively protecting the lithium cells from permanent damage.
Is the battery waterproof?
Yes, it carries a strict IP67 rating. This means the enclosure is completely dust-tight and can survive temporary immersion in water, making it a safe and rugged choice for demanding marine environments.
Find a dealer / Installer Near you
Let customers speak for us
Absolutely Incredible Range. We replaced our 4 year old Trojan batteries this spring with the 210 AH dual battery kit and we are blown away! We use the buggy to secure the perimeter of a 300 acre lot in South Carolina. We typically put about 200 miles per week on this unit. We have been testing this kit for about a month now and we are getting every bit of 80 miles per charge. Its absolutely unbelievable. Thank you Fleet Lithium!
This screen was so easy to install. We installed our fleet lithium battery about 2 years ago, the screen just came out in April, it took 10 minutes to install and everything works perfectly. Thank you Fleet lithium!
After a few months of use I can confidently say this was worth it. No maintenance, great range, and consistent power every time. Huge upgrade from stock.
The range has doubled compared to my old setup. Installation was straightforward and the instructions were clear. I can now play multiple rounds without recharging.
I love the Bluetooth monitoring features. No more voltage sag even on steep hills. It's a night and day difference from lead-acid batteries.
Installation was straightforward and the instructions were clear. No more voltage sag even on steep hills. The battery runs cooler and is much lighter than my old one.
This kit exceeded my expectations. The Ranger runs smoother, quieter, and more efficiently. Would absolutely buy again.
No more voltage sag even on steep hills. Installation was straightforward and the instructions were clear. The battery charges quickly and holds power for a long time.
The battery runs cooler and is much lighter than my old one. No more voltage sag even on steep hills. The range has doubled compared to my old setup.
This is the best upgrade I’ve done to my cart. Everything fit perfectly without any modifications. Customer service was helpful with my questions.
Fitted perfectly on our Ev Si tracker
Worth every penny for the performance boost. Customer service was helpful with my questions. No more voltage sag even on steep hills.
Everything fit perfectly without any modifications. The battery charges quickly and holds power for a long time. Installed this kit and my golf cart instantly felt more powerful.
Installed this kit and my golf cart instantly felt more powerful. Installation was straightforward and the instructions were clear. Great quality components and excellent build.
We are beyond impressed with the performance of these batteries. They're noticeably more powerful than pretty much any other brand we've used in our shop. And honestly the best part about them is that we don't have any warranty issues, after I installs are done our customers enjoy the units and we don't have to service them several times to get it right like we do with other brands. We are very happy at our dealership with Fleet Lithium batteries. We've installed hundreds of them, I'm not sure why they're not more reviews on these batteries but I can only assume because not many people come back to this website to review them. We're at lakesidebuggies.com and we've installed more of these than I can possibly even count. Nothing but praises for this company.
