by REC (Rechargeable Energy Components)
Product Name: Xantrex 12V 240Ah Lithium Battery Amazon: Not listed etrailer.com: Not listed 12V, 240Ah (3,072 Wh) Up to 6,000 cycles 69.4 lbs, compact design Description: Highcapacity, longlife lithium battery ideal for extended offgrid RV and campervan use, with a focus on lightweight, deep cycling, and reliability[1]. ## AGM (Absorbed Glass Mat) Battery Product Name: Odyssey ODPAGM24M Battery etrailer.com: Not listed Camping World: Listed as a top AGM RV battery[1]. 12V, 63Ah (20hour rate) 725 cold cranking amps (CCA) Reserve capacity: 155 minutes at 25A 51.4 lbs Description: Excellent for small to midsized RVs and campervans, offering robust cranking power, deep cycling, and maintenancefree AGM technology[1]. ## Lead Acid Battery Product Name: Group 27 AGM Deep Cycle Battery Amazon: Not listed etrailer.com: Not listed 12V, 92Ah (20hour rate) 580 CCA, 900 MCA Reserve capacity: 175 minutes Dimensions: 12.75" x 6.75" x 9.38" Maintenance free, vibration resistant Description: Affordable, sealed AGM deep cycle battery with reliable starting and cycling power for RVs and campervans, suitable for moderate offgrid use[3]. ## Battery Monitor Product Name: Victron Energy SmartShunt 500A etrailer.com: Not listed 500A continuous current Bluetooth connectivity Measures voltage, current, power, amphours, and more Compatible with all battery types Description: Advanced yet affordable battery monitor for realtime tracking of battery state, essential for lithium, AGM, and lead acid systems in campervans and RVs. ## BMS (Battery Management System) Product Name: RECBMS QnS Amazon: Not listed etrailer.com: Not listed Up to 16 cells (LFP batteries) 300A continuous, 600A peak Bluetooth and CAN communication Internal and external temperature sensors Description: Professionalgrade BMS for lithiumion campervan builds, offering advanced protection, monitoring, and communication features for safe, reliable offgrid power. Note:
Van Compatibility: Universal for lithium battery builds in Sprinter, Transit, ProMaster
The Lithium Battery by REC (Rechargeable Energy Components) is a top-tier choice for campervan and RV conversions, offering superior performance, safety, and longevity compared to traditional battery technologies[1][3][4]. Its design aligns perfectly with the unique needs of both weekend and full-time van lifers.
Why It’s Ideal for Campervan Conversions
Key Features and Benefits
What to Look for When Buying
Common Mistakes to Avoid
Best Use Cases
Budget Considerations and Value Analysis
In summary, the REC lithium battery offers unmatched practicality, safety, and value for campervan and RV electrification—whether you’re a casual camper or living vanlife full-time[1][2][4].
Lithium batteries (specifically LiFePO4) are the premium choice for campervan/RV house batteries, offering longer life, lighter weight, and more usable energy compared to traditional options. Here’s an objective comparison against the main alternatives:
| Product Name | Type | Price Range (USD) | Pros | Cons |
|----------------------------------|--------------|-------------------|--------------------------------------------------------------|---------------------------------------------------------------------|
| Redodo 12V 140Ah Lithium | Lithium | $430–$600 | Long lifespan (4000+ cycles), light (22 lbs), Bluetooth monitoring, 140Ah capacity, 150A BMS, fast (2 hr) charging, very safe | High initial cost, requires specific chargers, less common service network[1] |
| Battle Born 12V 100Ah Lithium| Lithium | $750–$950 | Built-in BMS, peace of mind brand, 100A continuous discharge, lightweight, up to 10-year lifespan, great support | Significantly higher price than many peers, still high upfront investment[2] |
| LiTime 12V 100Ah Self-Heating| Lithium | $400–$600 | Self-heating (for winter), smart BMS, Bluetooth, long cycle life, high surge capability | Lower capacity (100Ah), Group 24 size may not fit all vans[4] |
| AGM (Absorbed Glass Mat) | Lead-Acid | $200–$350 | Lower upfront cost, simple drop-in replacement, proven tech | Half the usable energy, shorter lifespan (~2–3 years), much heavier, slower charging[3] |
Lithium Batteries (LiFePO4) vs. Alternatives
- Performance: Lithium batteries deliver nearly full-rated capacity usable (80–100%), recharge faster (as little as 2–5 hours), and weigh 60–70% less than AGM options, which can only discharge to 50% and are far heavier[1][3][4].
- Cycle Life: LiFePO4’s 4,000+ cycles at 100% depth of discharge far exceed AGM’s 500–800 cycles at 50% DOD, resulting in up to a decade of heavy use versus just a few years for AGM[1][3][4].
- Maintenance & Convenience: Lithium batteries require no watering or periodic maintenance and are safer environmentally. Modern models offer Bluetooth monitoring and smart BMS for ease and safety[1][4].
Price Comparison
- Redodo and similar lithium options: $400–$600 for 100–140Ah.
- Battle Born: $750–$950 for 100Ah.
- LiTime: $400–$600 for 100Ah, including smart features.
- AGM (100Ah): $200–$350, but double the weight and half the usable power.
When to Choose Each Type
- Lithium: For full-time/off-grid van life, where longevity, weight, fast recharge, and deep cycling matter most. Also best when solar power is primary.
- AGM: For sporadic, budget-minded, or moderate power needs, or drop-in replacement in older systems without high initial cost[3].
Performance Differences for Van Life
- Lithium batteries excel in all-weather usability (with self-heating options for cold), handle large appliances (inverters, coffee machines), and support frequent deep discharges, crucial for extended boondocking or off-grid use[1][4].
- AGM batteries are heavier, bulkier, and require more frequent replacements, making them less suited for serious van life, especially if high capacity or daily cycling is needed[3].
For most van life scenarios, lithium batteries—especially high value models like Redodo or LiTime—offer dramatic advantages and total lowest cost over their lifetime, despite higher upfront prices. AGM is viable for light or infrequent use when budgets are tight.
Tools Required
Prerequisites
Step-by-Step Instructions
Common Mistakes
Pro Tips
Time Estimate