A Best-Use Guide for Choosing the Right Battery for Your Build

When it comes to off-grid power, one size doesn’t fit all. Whether you're converting a van, building out an overland rig, or outfitting your full-time RV or off-grid cabin, the battery you choose is the heart of your power system. At Expion360, we offer a range of lithium battery solutions—each designed with different adventures in mind. Here’s how to choose the right one for your setup.

 

---

 

Group 24 – Compact, Light & Ready to Roll

Best For: Small rigs, vans, compact RVs, and builds where space is at a premium.

Our Group 24 batteries pack serious punch in a lightweight, compact size. Available in 60Ah, 80Ah, and 95Ah, these lithium batteries are perfect for van lifers, weekend warriors, and anyone who needs portable power without sacrificing performance.

• Lightweight and compact design
  

• Ideal for tight battery bays or mobile installs
  

• Expandable for more capacity
  

• Reliable power for lights, fridges, fans, and more
  
  

---

 

Group 27 – Mid-Size, Multi-Purpose Muscle

Best For: Weekend warriors, mid-size RVs, trailers, and solar setups.

Offering more capacity than Group 24s while maintaining a manageable size, Group 27 batteries are a great middle ground for versatile power needs. They’re perfect for overlanding setups, solar charging systems, or upgrading from lead-acid batteries.

• More amp hours for longer run time
  

• Great fit for inverter and solar combo systems
  

• Plug-and-play upgrade from traditional batteries
  

• Expandable for even more juice on the trail
  
  

---

 

GC2 – Classic Size, Lithium Performance

Best For: Overlanders, RVs, off-grid homes, and golf cart conversions.

Need big power in a familiar footprint? The GC2 lithium battery fits most standard battery bays and delivers 162Ah at 12V or 36Ah at 48V. This is your go-to battery for energy-hungry builds that need dependable performance and easy installation.

• Drop-in replacement for GC2 lead-acid formats
  

• Great for golf cart conversions and RV systems
  

• High capacity, lithium efficiency
  

• Expandable and durable for remote power setups
  
  

---

 

EX1 Series – Serious Power for Demanding Builds

Best For: Full-time RVers, off-grid living, marine applications, and high-demand systems.

The EX1 Series is built to go the distance. Available in 368Ah or 450Ah, it uses ultra-dense 26650 lithium cells for maximum energy in a compact, rugged housing. Whether you're running appliances, HVAC, or heavy-duty inverters, the EX1 is your reliable powerhouse.

• IP55 weather-resistant design
  

• Built-in Smart BMS for optimal battery health
  

• Modular and expandable for future upgrades
  

• Ideal for tight installs and mobile off-grid systems
  
  

---

 

EX2 – Stackable Lithium Power for Off-Grid Pros

Best For: Off-grid homes, large RVs, overlanders, and pros who need serious capacity.

The EX2 is a game-changer—offering 240Ah per unit and stackable for up to 960Ah+ systems. With SmartTalk™ Bluetooth app monitoring, you can keep tabs on your power system from anywhere. Perfect for full-time living, large solar arrays, and mission-critical gear.

• Run large inverters, appliances, and AC
  

• Bluetooth monitoring and smart integration
  

• Stackable for massive energy systems
  

• Built for serious off-grid performance
  
  

---

 

Final Thoughts

Whether you're just getting started or upgrading to the ultimate off-grid system, Expion360 lithium batteries are built to power your pursuit. Use this guide to match your adventure to the battery that fits your rig, your lifestyle, and your power needs.

 

---

 

Need help designing your power system?
Contact our team for expert recommendations tailored to your build.