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5 Best Group Size 24 Battery Options for 2026
You’ll find five top Group Size 24 batteries that match different needs: Mighty Max MM-G24 for dependable 70Ah starting and rugged use; Weize Dual-Purpose 90Ah AGM for longer run time and quick charging; WEIZE 60Ah LiFePO4 for light weight, high CCA and many cycles; 100Ah LiFePO4 for maximum cycles, fast charge and long run; and Weize Platinum AGM for solid automotive fit. Each choice balances capacity, CCA, chemistry, and warranty so you can pick confidently should you desire more details.
| Mighty Max MM-G24 12V 70Ah Replacement Battery |
| Durable AGM Starter | Voltage: 12V | Group Size / Form Factor: Group 24 (G24) | Intended Applications: Starter / high-discharge, deep-discharge recovery (vehicle/industrial) | VIEW LATEST PRICE | Read Our Analysis |
| Weize Dual-Purpose AGM Group 24M Battery 12V 90Ah |
| Dual-Purpose Marine | Voltage: 12V | Group Size / Form Factor: Group 24M (BCI Group 24M) | Intended Applications: Dual-purpose — starter + deep-cycle (marine/RV) | VIEW LATEST PRICE | Read Our Analysis |
| WEIZE 12V 60Ah LiFePO4 Battery (Group 24) |
| High-Performance Lithium | Voltage: 12V | Group Size / Form Factor: Group 24 (Group 24 compatible) | Intended Applications: Dual-purpose — starter + deep-cycle (marine, RV, trolling motors, solar) | VIEW LATEST PRICE | Read Our Analysis |
| 12V 100Ah LiFePO4 Deep Cycle Battery (Group 24) |
| Long-Life Deep-Cycle | Voltage: 12V | Group Size / Form Factor: BCI Group 24 | Intended Applications: Deep-cycle energy storage (not for engine starting) | VIEW LATEST PRICE | Read Our Analysis |
| Weize Platinum AGM Group 24F Automotive Battery |
| Automotive Starter Pro | Voltage: 12V | Group Size / Form Factor: BCI Group 24F | Intended Applications: Automotive starter (starter/stop-start vehicles) | VIEW LATEST PRICE | Read Our Analysis |
More Details on Our Top Picks
Mighty Max MM-G24 12V 70Ah Replacement Battery
Should you need a tough, reliable battery for older trucks, RVs, or heavy accessories, the Mighty Max MM-G24 12V 70Ah is a smart pick you can count on. You’ll like its 12V, 70 Ah capacity and 710 CCA for strong starts in cold weather, plus 120 minutes reserve capacity for long accessory use. It’s AGM sealed and spill proof, so you won’t worry about leaks. The rugged build resists shock and vibration and works in many temperatures. You can mount it in several positions, bear in mind the left positive terminal, and rely on a three year warranty.
- Voltage:12V
- Group Size / Form Factor:Group 24 (G24)
- Intended Applications:Starter / high-discharge, deep-discharge recovery (vehicle/industrial)
- Sealed / Maintenance-free Design:AGM sealed, spill-proof
- Built-in Safety / Protection:Rugged construction; sealed AGM (spill-proof) — manufactured to standards (CE, ISO)
- Warranty / Manufacturer Support:3-year manufacturer warranty
- Additional Feature:High 710 CCA
- Additional Feature:120-minute reserve capacity
- Additional Feature:Rugged shock/vibration resistance
Weize Dual-Purpose AGM Group 24M Battery 12V 90Ah
Should you need a reliable battery that can both start your engine and power your appliances on long trips, the Weize Dual-Purpose AGM Group 24M 12V 90Ah is designed for you. You’ll appreciate its advanced AGM design that gives low internal resistance and strong output. It delivers 550 CCA and a 150 RC so you can start and run systems without worry. It charges quickly and supports a 14.4 V constant charge with a 15.8 A max current. The sealed, leak-proof case resists vibration and corrosion, needs little maintenance, and includes a two year warranty you can trust.
- Voltage:12V
- Group Size / Form Factor:Group 24M (BCI Group 24M)
- Intended Applications:Dual-purpose — starter + deep-cycle (marine/RV)
- Sealed / Maintenance-free Design:AGM sealed, leak-proof
- Built-in Safety / Protection:Sealed with safety valves; high vibration resistance
- Warranty / Manufacturer Support:2-year manufacturer warranty
- Additional Feature:90 Ah capacity
- Additional Feature:Quick-charge capable
- Additional Feature:20x vibration resistance
WEIZE 12V 60Ah LiFePO4 Battery (Group 24)
Should you want a compact battery that can both crank an engine and run your gear all day, the WEIZE 12V 60Ah LiFePO4 Group 24 is a strong match. You’ll get 800 CCA and a high continuous discharge rate, so your trolling motor and electronics run reliably. The LiFePO4 chemistry gives over 2,500 cycles at full depth of discharge, lasting far longer than lead acid while weighing significantly less. Built-in BMS protects against overcharge, overdischarge, short circuits and temperature extremes, and it auto disconnects safely as required. It’s maintenance free, non toxic, and needs a lithium charger.
- Voltage:12V
- Group Size / Form Factor:Group 24 (Group 24 compatible)
- Intended Applications:Dual-purpose — starter + deep-cycle (marine, RV, trolling motors, solar)
- Sealed / Maintenance-free Design:LiFePO4 with sealed BMS (maintenance-free)
- Built-in Safety / Protection:Built-in smart BMS (overcharge/discharge/short protection)
- Warranty / Manufacturer Support:(Warranty not explicitly stated in summary) — manufacturer support implied; BMS included (assume standard LiFePO4 warranty practices)
- Additional Feature:800 CCA cranking power
- Additional Feature:Built-in smart BMS
- Additional Feature:~2,500 cycle life
12V 100Ah LiFePO4 Deep Cycle Battery (Group 24)
Should you want a lightweight, long-lasting deep cycle battery for RVs, solar systems, or portable power, the V 100Ah LiFePO4 Group 24 is a great choice you can rely on. You’ll get a 12V 100Ah pack that fits standard Group 24 boxes and weighs about 22.57 lbs, so you’ll handle it easily. It uses automotive-grade LiFePO4 cells and a smart BMS that protects against overcharge, over-discharge, over-current, and shorts. Expect 4000+ cycles at full depth and far more at reduced depths, a five-year warranty, and fast charging at 14.6V, 20A for roughly five hours.
- Voltage:12V
- Group Size / Form Factor:BCI Group 24
- Intended Applications:Deep-cycle energy storage (not for engine starting)
- Sealed / Maintenance-free Design:LiFePO4 with built-in BMS (maintenance-free, sealed)
- Built-in Safety / Protection:Built-in smart BMS (over/under/short protection)
- Warranty / Manufacturer Support:5-year warranty
- Additional Feature:100 Ah capacity
- Additional Feature:4,000+ cycle life
- Additional Feature:5-year recommended lifespan
Weize Platinum AGM Group 24F Automotive Battery
In case you want a reliable starter battery that stands up to frequent starts and rough conditions, the Weize Platinum AGM Group 24F is a smart pick, offering high cold cranking power and a sealed AGM design that keeps maintenance low and safety high. You’ll get 710 CCA and 70 Ah in a compact 10.75 × 6.81 × 8.98 inch shell that fits many cars. Its AGM mat reduces leaks and handles vibration, so it suits stop start and off road use. Charge at 14.4 to 15.0 V, keep within 0 to 21 A, and observe a 36 month warranty.
- Voltage:12V
- Group Size / Form Factor:BCI Group 24F
- Intended Applications:Automotive starter (starter/stop-start vehicles)
- Sealed / Maintenance-free Design:AGM sealed, vibration-resistant (maintenance-free)
- Built-in Safety / Protection:AGM design reduces leak/explosion risk; vibration-resistant construction
- Warranty / Manufacturer Support:36 months (3-year) warranty
- Additional Feature:710 CCA rating
- Additional Feature:Tapered terminals (left neg)
- Additional Feature:Operating -22°F to 158°F
Factors to Consider When Choosing Group Size 24 Battery
When you pick a Group Size 24 battery, consider initially about how much capacity and what kind of use you need, since a long commute or heavy accessory load changes the choice. Also check cold cranking power and battery chemistry type so your car starts reliably in winter and the battery matches your charging system. Finally, make sure the physical size fits snugly and that warranty and support give you confidence should anything go wrong.
Capacity And Usage
Consider how long you need your Group 24 battery to run and how often you’ll charge it, because capacity and usage determine the right choice for your gear and peace of mind. You’ll look at amp hours initially. Ah tells you how many amps the battery can supply over 20 hours, so 60 Ah gives shorter run time than 100 Ah. For light accessories, pick 60 to 70 Ah. For long trolling motor sessions or RV house loads, aim for 90 to 100 Ah. Reserve capacity in minutes also matters because it shows endurance at a steady 25 A draw. Match capacity to your duty cycle and charging access. Should you want deep discharges and many cycles, choose LiFePO4; with lead acid, avoid discharging below half.
Cold Cranking Power
You’ve already matched capacity to how you use your Group 24 battery, and now you’ll want to check how well it will start your engine in cold weather. Cold Cranking Amps, or CCA, tell you how much current the battery can deliver for 30 seconds at 0°F. That number matters most whenever temperatures drop. For Group 24 batteries you’ll see a wide CCA range, for example 550 to 800 CCA, so pick one that meets or exceeds your vehicle maker’s cold-start spec. Higher CCA gives you more reliable starts but might cost more and mean heavier cells. Also take into account that reserve capacity and battery design affect starts indirectly. Whenever replacing, match terminal position and group size, and choose equal or higher CCA to avoid hard cold starts.
Battery Chemistry Type
Choosing the right battery chemistry for a Group 24 battery matters more than you could envision, because it changes weight, charging needs, lifespan, and how you’ll use the battery day to day. You’ll find AGM offers sealed, spill proof convenience and strong cold cranking amps, so it fits starting needs and rough service. Flooded lead acid costs less and lets you top up water, but it needs upright mounting and routine care. LiFePO4 feels much lighter, gives thousands of deep cycles, and holds voltage steady, so it suits frequent deep discharge and weight sensitive systems. Recall LiFePO4 needs a lithium charger and often includes a BMS. Match chemistry to how you use the battery and to your charging gear.
Physical Size Fitment
Once you’re fitting a Group 24 battery into a vehicle or box, the initial step is to check real-world space, not just the label. Measure length, width, and height against the common Group 24 size of about 10.75 inches long, 6.75 to 6.81 inches wide, and roughly 9 inches high. Then check terminal orientation and polarity so your cables reach without strain or reversal. Also confirm allowed mounting positions and avoid flipping the battery unless its chemistry allows it. Consider weight and support so mounts and handles cope during installation. Finally leave extra room for ventilation, cable bends, and mounting hardware. These checks keep installation safe and reduce surprises on fit and function.
Warranty And Support
Upon selecting a Group 24 battery, warranty and support matter as much as cold-cranking amps because they protect your investment and give you help in case things go wrong. You should check warranty length and coverage so it matches how you use the battery and how long you expect it to last. Also verify whether the warranty covers defects, capacity loss, prorated or full replacements, and what costs you could pay. Learn whether registration, proof of purchase, or maintenance steps like charging are required to keep the warranty valid. Look for responsive support channels with technical help and diagnostics. Finally, understand exclusions such as improper charging, physical damage, wrong installation, or extreme temperatures so you aren’t surprised later.
Frequently Asked Questions
Can I Parallel Multiple Group 24 Batteries Safely?
Yes — you can, but cautiously: consider batteries as rowers who must match pace, age, and strength. Provided they’re identical, balanced, charged equally, wired correctly with fusing and monitored, they’ll share load safely; otherwise don’t.
How Do I Recycle an Old Group 24 Battery?
You should take your old Group 24 battery to a certified recycling or hazardous-waste center; don’t toss it. Call local auto shops or recycling programs for drop-off, and they’ll handle proper disposal and hazardous-material processing.
Are Group 24 Batteries Airline-Approved for Shipping?
Are group 24 batteries airline-approved for shipping? Generally, you can ship them via air only provided they meet airline and IATA rules—most sealed lead‑acid batteries face strict limits, so check carrier rules and declare/specify type and capacity.
Do Group 24 Batteries Require a Break-In Charging Cycle?
No, group 24 batteries generally don’t require a break-in charging cycle; you’ll just charge them fully before initial use, follow the manufacturer’s charge/profile recommendations, and avoid overcharging or deep discharges to maximize lifespan and performance.
Can a Group 24 Battery Be Used in Marine Trolling Motors?
Yes — you can use a Group 24 battery in many marine trolling motors, but you’ll need to check capacity, discharge rates, and marine ratings; provided it meets amp-hour and continuous current needs, it’ll perform reliably on the water.
