## Lithium Battery

## Lithium Battery

by REC (Rechargeable Energy Components)

Hard Install Battery Systems Model: REC-BMS QnS

About This Part

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:

Installation Information

Installation Difficulty: Hard

Van Compatibility: Universal for lithium battery builds in Sprinter, Transit, ProMaster

Buying Guide

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

  • Lightweight and Compact: Reduces overall vehicle weight and maximizes interior space—critical for custom camper layouts where every inch matters[1][4].
  • High Usable Capacity: Delivers nearly all rated amps (usually 95%) vs. only 50%–60% in typical lead-acid batteries, allowing you to power appliances for longer periods[1][4].
  • Long Service Life: Usually rated for 2000+ cycles—significantly outlasting AGM and lead-acid alternatives, lowering total lifetime costs[1][4].
  • Fast Charging: Recharges much quicker than conventional batteries, so you spend less time plugged in or waiting for your solar/alternator input to top up[1][3][9].

Key Features and Benefits

  • Integrated Battery Management System (BMS): Ensures safe operation, balances cells, and protects against overcharge, deep discharge, and overheating[1][3][4].
  • Maintenance-Free: Requires no water checks or equalizing, reducing your ongoing maintenance tasks[1][3].
  • Bluetooth Monitoring (select models): Lets you monitor battery status via your phone for convenience and peace of mind[4].
  • Wide Temperature Range: Operates reliably in various climates, a must for travel and off-grid camping.
  • Green and Safe: Contains no heavy metals, is sealed, and is environmentally responsible[3].

What to Look for When Buying

  • Capacity (Ah/kWh): Calculate your estimated daily energy consumption and double-check REC’s available sizes (aim for 150–400Ah for most van applications)[1][6].
  • Compatible Charging: Verify your charging sources (solar, alternator, shore) support lithium charging profiles; look for built-in BMS compatibility[1][4].
  • Certifications: Ensure the battery meets safety standards such as AS IEC 62619:2023 for modern RV requirements[2].
  • Physical Size: Will it fit in your intended battery bay or storage compartment?
  • Warranty and Support: Opt for longer warranties and responsive support.

Common Mistakes to Avoid

  • Underestimating Power Needs: Insufficient Ah will curtail off-grid capabilities; always budget for some buffer beyond daily use[1][6].
  • Improper Installation: Not isolating the battery from habitable areas can be dangerous; follow safety codes and vent as needed[2].
  • Mixing Battery Types: Don’t mix lithium with other chemistries in the same bank.
  • Neglecting Charging System Upgrades: Many alternators or chargers need reprogramming/replacement for safe lithium operation[1][4].

Best Use Cases

  • Weekend Warrior: REC lithium batteries are excellent for short trips, allowing for fast recharges between outings and minimal self-discharge during storage[1].
  • Full-Time Living: Provides true deep cycling and robust energy reserves for regular, heavy appliance use (fridges, laptops, induction cooktops)[1][4].

Budget Considerations and Value Analysis

  • Upfront Cost: Higher than AGM/lead-acid, but the cost-per-use is substantially lower due to longer lifespan and greater efficiency[1][4][3].
  • Operating Cost: Nearly zero maintenance, higher reliability, and lower replacement frequency make REC lithium a high-value investment in the long run[3][4].

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].

Product Comparison

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.

Installation Tips

Tools Required

  • Wrenches or socket set (for terminal bolts and mounting hardware)
  • Wire cutters/strippers and crimpers
  • Heavy-duty cable lugs and heat shrink tubing
  • Insulated screwdriver
  • Multimeter (for testing connections)
  • Drill (if new mounting holes are needed)
  • Zip ties or cable organizers
  • Protective gloves and safety glasses

Prerequisites

  • Ensure all electrical loads are turned off and the van is disconnected from any shore power.
  • Remove the old battery safely if upgrading.
  • Review your van’s battery bay for fit, cleanliness, and dryness; clean as required[2].
  • Confirm your wiring, fuses, and bus bars are sized for lithium batteries; upgrade if necessary[1][3][9].
  • Ensure your charging system (DC-DC charger, solar controller, inverter) is lithium-compatible[7].
  • Identify an installation location outside the main habitable area or inside a sealed, vented box per current safety standards[3][4].

Step-by-Step Instructions

  1. Position the battery in the selected location, ensuring it is secure, vibration-free, and protected from moisture and temperature extremes[4].
  2. Fasten the battery using supplied base clamps/straps, preventing any movement[2].
  3. Attach battery terminal clamps or eyelets using supplied bolts; connect positive cable first, then negative[1][2].
    - Install a battery isolator switch and appropriate fuses (close to the battery on the positive line)[1][4].
  4. Double-check tightness (torque to manufacturer specs, typically ~12Nm)[2].
  5. Connect the battery to the positive and negative bus bars, ensuring connections are well-insulated and secure[1].
  6. Ground the system by connecting the negative bus bar or terminal to chassis ground if required[1].
  7. Re-check all wiring with a multimeter for correct voltage, polarity, and secure connections.
  8. Switch on connected devices and test the system operation; inspect for faults, blown fuses, and monitor battery status[2].
  9. Fully charge the battery using a compatible charger before first use[2][7].

Common Mistakes

  • Failing to isolate/disconnect all power sources before install[9].
  • Using existing (incorrect size/spec) bolts or cheap/inadequate cable lugs[2].
  • Installing batteries where they’re exposed to excessive heat, vibration, or humidity[4].
  • Neglecting to fit isolator switches and correct fusing near the battery[1][4].

Pro Tips

  • Label all cables clearly for future troubleshooting.
  • Use heat shrink and cable ties for neat, safe wiring that resists chafing.
  • Always check that your battery management system (BMS) is accessible and checkable after install.
  • Keep documents/diagrams of your final wiring with your vehicle for emergencies.

Time Estimate

  • A typical DIY lithium battery install takes 3–6 hours with preparation and careful wiring[5][7].
  • Complexity may increase if you are rewiring an older system or integrating advanced charging components.

Frequently Asked Questions

Installing a lithium battery in a campervan is straightforward if you have basic electrical skills, but it requires careful attention to safety, using correct gauge wiring, fuses close to the battery, and proper installation of terminal clamps and isolator switches. Ensure that all components are rated for lithium systems and that the installation follows recommended safety guidelines like grounding the negative bus bar and securely mounting the battery to prevent movement during transit[1][6][7].

Yes, lithium batteries are compatible with Mercedes Sprinter, Ford Transit, and Ram ProMaster van conversions. The main concern is ensuring the battery physically fits in your battery compartment and that your charging system is compatible with lithium technology, which may require upgrading certain components such as the charger, DC-DC charger, and wiring[2][4].

Lithium batteries require minimal maintenance compared to lead-acid batteries; no regular water checks or equalization is needed. Simply keep terminals clean and regularly check system connections. They commonly last 2,000–5,000 cycles, which can translate to 10 years or more with typical campervan usage, offering at least double the lifespan of lead-acid batteries[6].

Common issues include incorrect charging (using a charger not suited to lithium chemistry), loose connections, inadequate fusing, or poor ventilation. If the battery doesn't hold a charge, check charger compatibility, wiring connections, and ensure fuses and breakers haven't blown. Always consult the battery’s manual for error codes or troubleshooting LEDs on the Battery Management System (BMS)[6][7].

Calculate your daily power usage in amp-hours (Ah) by listing all appliances and their consumption, then add a safety margin. Choose a battery group size (such as Group 27 for 85–105Ah or Group 31 for 95–125Ah); larger vans with more appliances may require batteries in the 200–300Ah range. Consider available physical space and weight as well as capacity needs[2][4].

Key specs are battery voltage (usually 12V for campervans), capacity in amp-hours (Ah), and maximum continuous discharge and charge currents. Make sure your chargers, solar regulators, and inverters are lithium-compatible, and use wiring rated for the expected current. Install fuses within 7 inches of the battery terminals for safety, and ensure all components comply with lithium battery standards[6][7].

Most reputable lithium battery manufacturers offer warranties ranging from 5 to 10 years, typically covering manufacturing defects and early capacity loss under normal use. Support often includes technical assistance for installation and troubleshooting, and access to repair or replacement if the battery fails within warranty terms. Always check the manufacturer’s policy for specific details[6].

You will need insulated battery terminal clamps, heavy-duty lugs, appropriate gauge copper wire (commonly #4 or #10 gauge), bus bars, a shut-off switch, breakers or fuses, mounting straps or trays, and common hand tools such as screwdrivers, drills, wire cutters, and a multimeter for testing. Heat-shrink terminals and mounting brackets are also recommended for secure and safe connections[1][3][7].
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