If you’re tired of your Coachmen Freelander’s battery running out too quickly, taking forever to recharge, or just not keeping up with your lifestyle — you’re not alone.
Whether you’re boondocking off-grid or relying on solar to power your essentials, upgrading a Coachmen Freelander battery to a lithium battery is one of the smartest and most transformative changes you can make to your RV setup. But how do you do it the right way, and what should you expect?
Let’s walk through everything you need to know — clearly, honestly, and without the tech jargon.
Why Upgrade to Lithium in Your Coachmen Freelander?
If your RV still uses lead-acid or AGM batteries, you’re missing out. Here’s why lithium (especially LiFePO4) is such a game-changer for RV owners:
- More usable power: Lead-acid batteries give you about 50% of their rated capacity. Lithium? You get 80–90%.
- Faster charging: Lithium batteries charge up to 5x faster than traditional batteries.
- Longer lifespan: A quality lithium battery can last 8–10 years or more with minimal maintenance.
- Lighter weight: Drop as much as 50% of the weight compared to lead-acid — great for fuel savings and performance.
So, upgrading a Coachmen Freelander battery to lithium battery isn’t just about power. It’s about freedom — more time off-grid, fewer headaches, and less maintenance.
Things to Consider Before You Upgrade
Jumping into a lithium upgrade is exciting, but there are a few key details to check before you make the swap.
1. Will the New Battery Fit?
Lithium batteries come in different sizes and shapes. Most Coachmen Freelander models have limited battery bay space, so double-check the dimensions before you order.
Tip: Some RVers use compact lithium batteries that stack vertically or fit in custom mounts.
2. Do You Need a New Converter/Charger?
Lithium batteries need a specific charging profile. If your RV’s converter isn’t compatible, you may need to upgrade it. Look for units like:
- Progressive Dynamics PD4645
- WFCO WF-8955LIS (specifically made for lithium)
These converters ensure your new battery charges correctly and safely.
3. What About Alternator Charging?
Using your alternator to charge a lithium battery can put a strain on your vehicle’s electrical system. Many RVers solve this by installing a DC-to-DC charger. These devices regulate voltage and protect your alternator — a must-have if you drive often between campgrounds.
4. Solar Charging Compatibility
If you’re using solar, great news: most modern MPPT charge controllers (like Victron or Renogy) support lithium profiles. Just make sure your system is updated with the correct voltage settings.
Step-by-Step Guide: How to Upgrade a Coachmen Freelander Battery to Lithium Battery
Step 1: Choose the Right Lithium Battery
Look for an LiFePO₄ battery with built-in BMS (battery management system). Brands like Battle Born, Renogy, and Victron are popular and proven in RV setups.
Check these specs:
- 12V (unless you’re running a 24V system)
- 100Ah minimum for typical use
- Cold-temperature charging protection if you camp in cold climates
Step 2: Replace or Update Your Charger
If your existing converter isn’t lithium-compatible, swap it out. This ensures your battery charges efficiently and safely.
Step 3: Add a DC-to-DC Charger (If Needed)
If you’ll be charging from the engine alternator, a DC-to-DC charger is crucial. It prevents damage to both your alternator and your new lithium battery.
Step 4: Inspect Wiring and Fuses
Lithium batteries can handle higher charge/discharge rates. Make sure your wiring is up to the task:
- Use the correct gauge wire (typically 4 AWG or better)
- Add inline fuses or breakers near battery terminals
- Ensure proper grounding
Step 5: Install and Secure the Battery
Mount your lithium battery securely. Even though they’re lighter, movement during travel can cause wear or damage.
Step 6: Program Charge Controllers and Monitors
Set your solar charge controller to the lithium profile (usually 14.4V bulk, no float or very low float). Install a battery monitor like the Victron BMV-712 to track charge, voltage, and health.
Common Questions About Lithium Upgrades in RVs
“Can I just drop in a lithium battery and go?”
Technically, yes — if your system is lithium-compatible. But for best results, follow the full upgrade process. Skipping things like the converter or charger setup can cause long-term issues.
“Do I need to upgrade the solar controller?”
If your solar setup is older, it might not support lithium voltages. Check the manual or manufacturer’s website. Most MPPT controllers from the past 5 years will have a lithium setting.
“Is a Battery Isolation Manager the same as a DC-to-DC charger?”
Not exactly. A BIM helps isolate and protect charging systems but doesn’t regulate voltage the way a DC-to-DC charger does. For lithium upgrades, DC-to-DC is generally preferred for alternator charging.
Benefits You’ll Notice Right Away
After upgrading a Coachmen Freelander battery to lithium battery, most owners report:
- More days of off-grid camping
- Faster recharges from solar or generator
- Better performance with high-drain devices (like microwaves or induction cooktops)
- Less worry about battery maintenance or failure
Plus, with a proper setup, you won’t have to touch your battery system again for years.
Final Thoughts
Upgrading a Coachmen Freelander battery to a lithium battery isn’t just a tech trend—it’s a serious lifestyle improvement. From more power and faster charging to longer trips without hookups, lithium gives you the independence and reliability every RVer craves.
Yes, there’s a learning curve, and yes, there’s an upfront cost. But the payoff in performance, peace of mind, and long-term savings makes it one of the best upgrades you can make to your RV.
