4 Best Lithium Batteries for Your RV in 2024 Reviewed

Imagine hitting the open road, knowing you have a reliable and robust energy source to keep your adventures going. The magic ingredient? The right lithium battery for your RV. It’s easy to get overwhelmed by all the options available, so this guide will help you narrow down the options and make the best decision for your RV power needs.

Discover the best lithium batteries available for your RV, focusing on the high-performance options from EcoFlow that are ready to keep you powered up on all your adventures.

EcoFlow’s Top Lithium Batteries for an RV

  1. Best All-Around: EcoFlow Power Kits
  2. Best For Larger Vans or RVs: EcoFlow DELTA Pro
  3. Best For Mid-Range RVs:  EcoFlow DELTA 2 Max
  4. Best For Smaller RVs: EcoFlow DELTA 2

Best All-Around: EcoFlow Power Kits

EcoFlow Power Kits are perfect for those looking for a revolutionary off-grid energy generation and storage system. These highly adaptable kits allow you to integrate them into your existing setup or start from scratch with a new, all-in-one system. 

You’ll never have to worry about being out of energy on the road because EcoFlow Power Kits can recharge via multiple methods, such as solar, shore power, and more. The compact and comprehensive design saves space and simplifies installation and operation by combining several essential elements into one Power Hub.

One of the standout features of the EcoFlow Power Kits is its modern safety standard of 48V, which upgrades any older or outdated system. The built-in BMS system also regulates battery current, voltage, and temperature, providing a double layer of safety in your RV.

It’s a do-it-all system that allows you to generate energy (with solar panels, sold separately), store energy (with a powerful LFP battery available in multiple variations), and use energy (by linking devices to Power Hub directly or linking them with the EcoFlow Smart Distribution Panel).

Power Kits feature five key components in one comprehensive system: an MPPT solar charge controller, battery charger, DC-DC down-step converter, and inverter charger.

Need more battery power as your RV adventures evolve? Your system evolves with you using stackable LFP batteries.

The EcoFlow Power Kits are perfect for RV living. They offer innovative technology that allows real-time control and management via your smartphone when using the EcoFlow app. Customize your setup with various modular combinations to fit any RV.


  • Storage Capacity (Minimum): 2kWh
  • Storage Capacity (Maximum): 15kWh
  • AC Output: 3.6kW continuous output (7.2kW Surge)
  • System Voltage: 48V (Compatible with 12V Systems)
  • Solar Charge Capacity (Maximum): 4800W
  • Weight & Dimensions: Varies Based on Bundle
  • Charging Options/Input Capacity: 4800W Solar/1000W Van Alternator/3000W Shore Power/1800W Smart Generator Dual Fuel
  • Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
  • Cycle Life: 3000 Cycles to +/-80% Capacity
  • Depth of Discharge: 100%
  • Warranty: Five years (no cycle life restrictions)
  • App Monitoring and Control?: Yes


  • Modular and customizable to fit your RV
  • Charge multiple ways
  • Safe and simple to use
  • Control and monitor usage via smartphone


  • Initial setup may require guidance
  • Requires thought to plan the system around your specific RV and energy needs

Best for Larger Vans or RVs: EcoFlow DELTA Pro

The EcoFlow DELTA Pro is ideal for those who need robust power in a small body. It can easily power your whole RV, making it perfect for extended adventures and ensuring you can always use your most crucial heavy-duty home appliances. 

With an expandable capacity of up to 25kWh, you can achieve energy independence on the road without the need to connect to shore power or campground electricity hookups. Are you worried it won’t work well with your unique RV? The EcoFlow DELTA Pro will work seamlessly whether you drive a Class A or B home on wheels.

The long-lasting LFP battery ensures durability and prioritizes safety, which is essential when living in a motor vehicle. LiFeP04 batteries feature upgraded safety from the standard lithium battery, giving the EcoFLow DELTA Pro and all EcoFlow DELTA batteries a leg up.

The ability to recharge quickly with multiple sources, including EV charging stations, adds convenience. The high availability of EV charging stations throughout the US means you’ll always have access to energy wherever your travels take you.

Enjoy your travels and use your favorite appliances without worrying about power shortages when you rely on the EcoFlow DELTA Pro battery.


  • Storage Capacity (Minimum): 3.6kWh
  • Storage Capacity (Maximum): 25kWh
  • AC Output (Maximum): 3.6kW continuous output (7.2kW Surge)
  • AC Output (Maximum): Expandable to 7.2kW continuous output (14.4 kW surge) with 2 x EcoFlow DELTA Pro + Double Voltage Hub
  • Solar Charge Capacity (Maximum): 3.2kW with 2 x EcoFlow DELTA Pro (16 x 400W Rigid Solar Panels)
  • Weight: 99 lbs (45kg)
  • Dimensions: 25 x 11.2 x 16.4 inches (63.5 x 28.4 x 42cm)
  • Operating Noise Level: ~50 decibels
  • Charging Options: Solar/AC/Car Charger/Smart Home Panel/EV Charge Station/Smart Generator (Dual Fuel)
  • Multicharge Options? Yes
  • Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
  • Cycle Life: 3000 Cycles to +/-80% Capacity
  • Depth of Discharge: 100%
  • Warranty: Five years (no cycle life restrictions)
  • App Monitoring and Control?: Yes


  • Power your whole RV with one battery
  • Heavy-duty and durable enough for adventures
  • Expandable to meet your needs


  • Heaviest of all EcoFlow DELTA options

Best for Mid-Range RVs: EcoFlow DELTA 2 Max

The EcoFlow DELTA 2 Max is an excellent option for mid-range RVs who don’t need all the power that the EcoFlow Power Kits or EcoFlow DELTA 2 Pro provide but still need a reliable lithium battery for their RV adventures. This model is compact and won’t take up too much space in your home on wheels, but it still has the capacity and output to power multiple heavy-duty appliances at the same time. 

Enjoy a quick recharge with AC or solar energy, taking advantage of the EcoFlow Solar Panels sold separately or even AC shore power available at most RV campgrounds. If you’re worried you’ll outgrow the EcoFlow DELTA 2 Max, have no fear. You can easily add extra smart batteries to expand its capacity, a great feature of the EcoFlow DELTA series.

If you liked the EcoFlow DELTA 2, you’ll love the added upgrades on this enhanced model. It now features Bluetooth, WiFi connectivity, and an LFP battery to improve efficiency and safety.

It’s a great entry point for RV batteries that will meet all your mid-range power needs.


  • Storage Capacity (Minimum): 2048 Wh
  • Storage Capacity (Maximum): 6kWh
  • AC Output (Maximum): 2.4kW continuous output (3.4kW surge)
  • Solar Charge Capacity (Maximum): 11-60V 15A, single port 500W; dual port 1kW
  • Weight: 50.7 lbs (23 kg)
  • Dimensions: 19.6 × 9.5 × 12 in (49.7 × 24.2 × 30.5 cm)
  • Operating Noise Level: ~50 decibels
  • Charging Options: Solar/AC/Car Charger
  • Multicharge Options? Yes
  • Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
  • Cycle Life: 3000 Cycles to +/-80% Capacity
  • Depth of Discharge: 100%
  • Warranty: Five years (no cycle life restrictions)
  • App Monitoring and Control?: Yes


  • Long-lasting battery of 10+ years
  • Can power several heavy-duty appliances at once
  • Quickly recharge


  • Bulkier than DELTA 2
  • Smaller capacity than DELTA Pro will need more frequent recharging

​​Best for Smaller RVs: EcoFlow DELTA 2

Are you tight on space but still need a reliable lithium battery for your RV? Powerful things come in small packages, like the EcoFlow DELTA 2. It’s perfect for weekend RV trips and can expand as needed, only taking up as much room as necessary. Though it’s not the most powerful option on this list, it can still power 90% of appliances so that you can enjoy the comforts of home while on the road.

Its battery lasts up to six times longer than competitors because it’s an enhanced lithium battery, known as LiFeP04, of LFP. This battery type is also more efficient and safer, which is an important consideration when living in the same small space as the battery.

You’ll love how much use you can get from this deceptively small battery – run a light for 31 continuous hours, use an electric grill for an hour, or charge your phone a whopping 89 times. This compact model packs an energy punch.


  • Storage Capacity (Minimum): 1024Wh
  • Storage Capacity (Maximum): 3kWh
  • AC Output (Maximum): 1.8kW continuous output (2.7kW Surge)
  • Solar Charge Capacity (Maximum): 500W max (11-60V, 15A)
  • Weight: 27 lbs (12 kg)
  • Dimensions: 15.7 x 8.3 x 11.1 in (40 x 21.1 x 28.1 cm)
  • Operating Noise Level: ~50 decibels
  • Charging Options: Solar/AC/Car Charger
  • Multicharge Options? Yes
  • Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
  • Cycle Life: 3000 Cycles to +/-80% Capacity
  • Depth of Discharge: 100%
  • Warranty: Five years (no cycle life restrictions)
  • App Monitoring and Control?: Yes


  • Good power and size at an affordable cost
  • Expand capacity to meet your growing RV needs
  • Power 90% of appliances


  • Solar panels come separately to create a full solar generator
  • You can’t run everything at the same time

Why Should You Consider Lithium Batteries for Your RV?

Lithium batteries are the premium choice for powering the appliances and devices in an RV. Here’s why.

Longer Lifespan

Lithium batteries, specifically lithium iron phosphate (LiFePO4) batteries, will last much longer than lead-acid batteries. They can endure up to 3000 cycles before reaching 80% of their capacity, compared to lead-acid batteries, which typically last only around 200-500 cycles. 

Lightweight and Compact

Size and weight matter on an RV, and lithium batteries take up less of both than lead-acid batteries. Their small and light nature is especially beneficial for RV owners who are conscious about weight distribution and want to save space in a small RV.

Faster Charging

Lithium batteries’ higher charge efficiency means they can fully recharge more quickly than lead-acid batteries. This is particularly useful for RV owners who may only occasionally have access to electricity and need their batteries to charge quickly.

Greater Depth of Discharge

Lithium batteries also offer a higher depth of discharge (DoD), meaning they can be drained to a lower capacity without causing damage. You’ll get more usable energy and longer periods between charges.

Environmentally Conscious

Lead-acid batteries contain toxic chemicals and can harm the environment if not disposed of properly. On the other hand, lithium batteries are much more environmentally friendly because they don’t contain any toxic materials.

How to Choose a Lithium Battery for an RV?

LFP and lithium-ion batteries aren’t the same. LFP batteries are generally a better option than lithium-ions to power an RV. To ensure you make the best choice, consider the following factors when selecting a lithium battery for your RV.

Capacity and Output

Ensure the battery has enough storage and output to meet your energy needs. Larger capacities are ideal for powering multiple appliances and extended trips. To calculate this, add up the outputs of the appliances you’ll need to use multiplied by the hours you will use them to get kWh.


Look for batteries that offer versatile charging options and smart technology for real-time monitoring and control. EcoFlow batteries can be charged using solar or AC power; some can even be charged at EV charging stations.


The best battery for you is one that fits in your RV comfortably without taking up too much space. Compact designs that are still powerful enough to meet your electricity needs are ideal for smaller RVs. EcoFlow excels in this area.


Opt for batteries with long cycle life and durable materials to withstand travel and outdoor adventures. LFP batteries, which power the EcoFlow models listed here, are more durable and last longer than standard lithium-ion batteries.


Safety must be prioritized when choosing a battery you will live alongside in a small RV. Battery features such as built-in battery management systems (BMS) will ensure the battery performs properly and mitigate safety concerns. LFP batteries are much safer than lithium-ion models, so choosing this kind of battery will also provide peace of mind.

Final Thoughts

Choosing the best lithium battery for your RV can make a big difference in your travel experience. From the all-in-one EcoFlow Power Kits to the robust DELTA Pro for larger vans and the compact but mighty DELTA 2 for smaller RVs, there’s a perfect option for every adventurer.

Explore the benefits of lithium batteries and elevate your RV experience with reliable, eco-friendly EcoFlow Portable Power Stations.

EcoFlow is a portable power and renewable energy solutions company. Since its founding in 2017, EcoFlow has provided peace-of-mind power to customers in over 85 markets through its DELTA and RIVER product lines of portable power stations and eco-friendly accessories.


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