Buying guide · 10 min read · Updated October 2, 2026

5 Best Group 24 RV Battery in 2026: A Practical RV Guide

Group 24 RV battery picks compared by usable amp hours, cranking versus deep cycle design, and fit in a 10 inch long battery tray, lithium and AGM.

By Bowen HigginsRV Editor at RV Gear Lab5 products comparedSpec-sheet researched

Group 24 is a smaller battery case, around 10 inches long, so the question is what chemistry fits into it. A dual purpose AGM gives you engine cranking plus modest house power, while a lithium drop in gives far more usable energy but cannot crank an engine. These five were compared on real usable amp hours, case dimensions and whether the listing separates starting numbers from deep cycle capacity.

RV Gear Lab field notes

The Rig Fit Check

Start with the job: Litime 2 Packs 12V 100Ah LiFePO4 Battery leads this shortlist for building a lithium house bank from scratch. Use that fit as a reference point, then compare the alternatives against your own space and workload.
Specs that separate the picks: The first details to compare are 2 x 12V 100Ah LiFePO4, 12.8V 100Ah LiFePO4, 12V 90Ah AGM. Confirm the exact model and included components before ordering.
Trade-off to plan for: Costs $612.85 even if you only need one battery

Before you buy

What Matters Before You Choose a Group 24 RV Battery

Key buying criteria so you get the right fit the first time.

01
Usable versus nominal capacity
A 90Ah AGM should only be discharged about 50 percent, giving roughly 45Ah, while a 100Ah lithium can use close to all of its capacity. Draining AGM deeper shortens its life sharply. Check the chemistry and divide accordingly.
02
CCA versus deep cycle rating
CCA measures cold cranking burst, while amp hours measure stamina. A battery with 750 CCA may have only 70Ah to give. Read both numbers on the listing and decide which job matters.
03
Group 24 vs 24M sizing
Group 24 and 24M are close but not identical, and 24M is the marine version with different terminals. A battery that is a half inch too long will not fit a tray. Compare the listed length, width and height to your tray.
04
Lithium cold charging
LiFePO4 cells can be damaged if charged below freezing, so many include low temperature cutoffs. The Litime lists such a cutoff. Check the listing for a charge temperature threshold if you winter camp.
05
Charger compatibility
Lithium needs a charger profile around 14.2V to 14.6V, and an old lead acid converter may undercharge. AGM is happy with standard converters. Check your converter's lithium mode before buying.

Our standards

Why You Can Trust RV Gear Lab

At RV Gear Lab, we compare products based on rig fit and power or hookup compatibility, verified specifications, usability, setup requirements, weight, durability, and real-world trade-offs. We do not rank products purely on marketing claims or commission rates.

We have not personally tested every product listed. Where hands-on testing is not available, recommendations are based on verified manufacturer specifications, product documentation, use-case fit, and comparative research.

How we review RV gear →

Detailed reviews

The 5 best group 24 rv battery, explained

Best Overall · 1 of 5

Litime 2 Packs 12V 100Ah LiFePO4 Battery

2 x 12V 100Ah LiFePO4
Bluetooth 5.0 monitoring
100A BMS, low-temp cutoff

Check price on Amazon

Best for: Building a lithium house bank from scratch

Our take

At $612.85 for the pair it is about $306.43 per battery, which is $126.44 more per battery than the SUPER EMPOWER at $179.99.

Why it made the shortlist

This Litime set is two 12V 100Ah Group 24 LiFePO4 batteries with Bluetooth 5.0 monitoring, a built-in 100A BMS and low temperature charge cutoff. Two batteries give 200Ah of lithium capacity at 12V, which is a real house bank rather than a single battery upgrade.

Pick this if you are building a house bank from scratch.

What works

Two 100Ah batteries make a 200Ah house bank
Bluetooth app shows charge state without opening the compartment
Low temperature cutoff protects cells in cold weather

Watch out for

Costs $612.85 even if you only need one battery
Cannot crank an engine like an AGM can

Check price on Amazon

Best Lithium Value · 2 of 5

12V 100Ah LiFePO4 Battery

12.8V 100Ah LiFePO4
21.6 lb
6.49 x 10.24 x 8.98 in

Check price on Amazon

Best for: Cheap lithium upgrade for a house battery

Our take

Pick this if you want the cheapest way into lithium.

Why it made the shortlist

The SUPER EMPOWER is a 12.8V 100Ah LiFePO4 battery with Grade A cells, listed at 21.6 lb and 6.49 x 10.24 x 8.98 inches. It is a drop in replacement for lead acid batteries in a Group 24 slot.

What works

Cheapest 100Ah lithium option in this comparison
Weighs 21.6 lb, far less than lead acid
Fits Group 24 compartments as a drop in swap

Watch out for

Cannot be used as an engine starting battery
Bluetooth and heating features are not listed

Check price on Amazon

Best Dual Purpose Value · 3 of 5

Mighty Max Battery MM-G24M

12V 90Ah AGM
550 CCA, 700 CA
Group 24M dual purpose

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Best for: Rigs that need one battery to start and run

Our take

At $199.99 it is $1.00 less than the Marxon 24M at $200.99 and gives 11Ah more capacity (90Ah versus 79Ah).

Why it made the shortlist

The Mighty Max MM-G24M is a 12V 90Ah group 24M AGM with 550 CCA and 700 CA, built to both start an engine and run loads. It is sealed and maintenance free.

Pick this if you need a battery that cranks and runs a fridge.

What works

Cranks an engine and runs house loads
90Ah capacity beats the Marxon's 79Ah
Sealed AGM design never needs watering or topping up

Watch out for

Only about half the 90Ah is safely usable
Heavier than lithium of similar nominal capacity

Check price on Amazon

Runner-Up Dual Purpose · 4 of 5

Marxon Group 24M Marine Battery Dual Purpose 12V 79Ah 715MCA 550CCA 150RC

12V 79Ah dual purpose
550 CCA, 715 MCA, 150 RC
10.24 x 6.61 x 8.19 in

Check price on Amazon

Best for: Owners with a tight, measured tray

Our take

At $200.99 it costs $1.00 more than the Mighty Max 24M with 11Ah less capacity, so it is rarely the better buy unless you need its exact dimensions.

Why it made the shortlist

The Marxon Group 24M is a 12V 79Ah dual purpose battery rated 550 CCA, 715 MCA and 150 RC, measuring 10.24 x 6.61 x 8.19 inches. The listing states its dimensions clearly, which is helpful for tight trays.

Pick this if the listing size matches your tray.

What works

Dimensions are clearly listed for tray fitting
550 CCA starts most engines in cold weather
Reserve capacity of 150 minutes is listed

Watch out for

Lowest capacity in this group at only 79Ah
Costs $1.00 more than a bigger Mighty Max

Check price on Amazon

Best for Cranking Power · 5 of 5

Interstate Batteries Marine/RV Battery 12V 70Ah 750CCA Group 24 AGM

12V 70Ah AGM
750 CCA
Pure lead AGM

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Best for: Cold climate starting plus light house loads

Our take

Pick this if cold starting is the priority.

Why it made the shortlist

The Interstate Marine/RV battery is a 12V 70Ah Group 24 AGM with 750 CCA, a pure non alloy lead design the maker says lasts two to three times longer. It is dual purpose for cranking and deep cycling.

What works

750 CCA is the highest cranking power here
Pure lead design aims for longer life
Sealed AGM design is maintenance free for owners

Watch out for

Costs $59.96 more than the Mighty Max 24M
Only 70Ah, the smallest house capacity

Check price on Amazon

Methodology

How We Built This Shortlist

Each pick was assessed across 4 criteria weighted for real-world use.

Usable energy

We compared lithium's near full discharge to AGM's roughly 50 percent safe depth of discharge.

Cranking versus deep cycle

We separated CCA and MCA starting figures from amp hour house capacity.

Case fit

We checked listed dimensions against the roughly 10 inch Group 24 footprint.

Cost per usable amp hour

We divided price by realistic usable capacity rather than nominal amp hours.

Decision guide

Match a Group 24 RV Battery to Your RV

By Primary Job

Your situation	Recommended pick	Why
Pure house bank, no engine start	SUPER EMPOWER 100Ah	Cheapest 100Ah lithium
Large house bank from scratch	Litime Group 24 Pair	200Ah in two batteries with app
One battery to crank and run	Mighty Max 24M	90Ah plus 550 CCA
Cold weather engine starting	Interstate 24 AGM	750 CCA

By Budget

Budget	Recommended pick
$170 to $200	SUPER EMPOWER 100Ah or Mighty Max 24M
$200 to $260	Marxon 24M or Interstate 24 AGM
$610 to $620	Litime Group 24 Pair

Lithium vs AGM

Lithium

About 100Ah usable in a 21.6 lb case, but no cranking. The Litime Group 24 Pair and SUPER EMPOWER 100Ah are the picks.

AGM

Cranks and runs loads but only half the nominal capacity is usable. The Mighty Max 24M, Marxon 24M and Interstate 24 AGM are in this group.

Default to lithium for house power and AGM only where one battery must also start an engine.

By Budget Per Battery

Best pick	Recommended pick
Under $200	SUPER EMPOWER 100Ah
Around $200 with cranking	Mighty Max 24M
Around $260 for cold starts	Interstate 24 AGM
Pair for $612.85	Litime Group 24 Pair

For Small Trailer Tongue Boxes Specifically

Look for

Listed dimensions near 10.24 inches long and a weight under 25 lb.

In this comparison

The SUPER EMPOWER 100Ah at 21.6 lb and 10.24 inches wide is easiest to handle, and the Marxon 24M lists 10.24 inch length for tight trays.

When to Spend More

Spend more if

Spend more on the Litime Group 24 Pair if you will install two batteries, since $306.43 each buys Bluetooth monitoring and low temperature protection beyond the SUPER EMPOWER.

Save if

Save with the SUPER EMPOWER 100Ah at $179.99, which is $20.00 under the Mighty Max 24M and gives about twice the usable energy.

FAQ

Before You Bring One Home

Can a lithium Group 24 battery start my engine?

These drop in lithium models are listed for deep cycle use. Use a dual purpose AGM if one battery must also crank.

What is the difference between Group 24 and 24M?

24M is the marine version with different terminals. Check dimensions and terminal layout before buying.

How many Group 24 batteries do I need?

Add up daily amp hours, then divide by usable capacity per battery. A 100Ah lithium covers roughly twice what an AGM of the same rating does.

Is Group 24 big enough for an RV?

For small trailers and van setups, yes. Larger rigs usually use Group 27 or 31 for more capacity.

Bottom line

The short version

Browse more group 24 rv battery on Amazon →

About the author

Bowen Higgins

RV Editor at RV Gear Lab

Bowen covers RV power, water systems, towing and leveling, upkeep and interior comfort, with a focus on matching gear to the rig, the hookups and the way you actually travel.

5 Best Group 24 RV Battery in 2026: A Practical RV Guide

Our top picks

The Rig Fit Check

What Matters Before You Choose a Group 24 RV Battery

Usable versus nominal capacity

CCA versus deep cycle rating

Group 24 vs 24M sizing

Lithium cold charging

Charger compatibility

Why You Can Trust RV Gear Lab

The 5 best group 24 rv battery, explained

Litime 2 Packs 12V 100Ah LiFePO4 Battery

12V 100Ah LiFePO4 Battery

Mighty Max Battery MM-G24M

Marxon Group 24M Marine Battery Dual Purpose 12V 79Ah 715MCA 550CCA 150RC

Interstate Batteries Marine/RV Battery 12V 70Ah 750CCA Group 24 AGM

How We Built This Shortlist

Usable energy

Cranking versus deep cycle

Case fit

Cost per usable amp hour

Match a Group 24 RV Battery to Your RV

By Primary Job

By Budget

Lithium vs AGM

By Budget Per Battery

For Small Trailer Tongue Boxes Specifically

When to Spend More

Before You Bring One Home

Can a lithium Group 24 battery start my engine?

What is the difference between Group 24 and 24M?

How many Group 24 batteries do I need?

Is Group 24 big enough for an RV?

The short version

Bowen Higgins

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