Why you should choose LiFePo4 leisure batteries for your campervan build.
This post is sponsored by our brand partner Ultramax. You can save 10% on the Ultramax range of batteries at The Battery Masters when you use the code T4UMX10 at the checkout.
Reliable power is essential when it comes to van life and off-grid adventures. Traditional lead-acid batteries, like Sealed Lead Acid (SLA) and Absorbent Glass Mat (AGM), have served their purpose, but it's time to explore a superior alternative: Lithium Iron Phosphate (LiFePo4) batteries. In this post, we'll explain the key benefits of LiFePo4 batteries and compare them to AGM and other lead-acid technologies, helping you make an informed choice for your leisure system.
Lower Weight, More Space
One of the standout features of LiFePo4 batteries is their significantly lower weight. Compared to traditional lead-acid batteries, which can be bulky and heavy, LiFePo4 batteries are up to 70% lighter. For instance, while a typical 100Ah AGM battery can weigh around 30kg, a 100Ah LiFePo4 battery weighs approximately 10kg.
Why does battery weight matter?
Fuel Efficiency: Less weight means improved fuel efficiency, which is crucial for long trips.
Ease of Installation: Lighter batteries are easier to handle and install, reducing the risk of injury and simplifying the setup process.
Payload Management: For campervans and caravans, weight management is vital. A lighter battery allows more room for other essential items without overloading the vehicle.
More Available Capacity
LiFePo4 batteries offer significantly more usable capacity compared to AGM and SLA batteries. Traditional lead-acid batteries typically allow you to use about 50% of their capacity to avoid damage, this is known as Depth of Discharge (DoD) and is measured as the percentage of the total battery capacity. In contrast, LiFePo4 batteries let you use 90% to 100% of their rated capacity without significantly compromising lifespan.
Worked Example: A 100Ah AGM battery effectively gives you about 50Ah of usable power. Meanwhile, a 100Ah LiFePo4 battery provides up to 100Ah of usable capacity. As a result, Lithium batteries can give you 100% more usable energy compared to an AGM battery of the same capacity.
Why is battery capacity important for my leisure battery?
Extended Off-Grid Time: More usable capacity means your lights, fridge, and other electronics can run longer, perfect for off-grid adventures.
More power for the same physical space: If space is limited in your build, a Lithium battery will hold significantly more capacity than an AGM battery of the same dimensions.
Lower Lifetime Costs
While LiFePo4 batteries might have a higher upfront cost, they offer significantly lower lifetime costs due to their durability and longevity. These batteries typically last up to 10 years or more, compared to 3-5 years for AGM batteries. Coupled with the increased capacity and higher depth of discharge, LiFePo4 batteries have the lowest lifetime cost per Ah than any other leisure battery technology.
What makes LiFePo4 batteries cheaper than AGM?
Cycle Life: LiFePo4 batteries can be discharged and recharged over 2000 times and still retain 80% of their capacity. In comparison, AGM batteries generally last for 500-800 cycles.
Fewer Replacements: The extended lifespan means fewer replacements, reducing overall costs and hassle.
Consistent Performance: LiFePo4 batteries maintain consistent performance over their lifetime, whereas lead-acid batteries gradually lose capacity.
Drop-In Replacement
In most cases, LiFePo4 batteries are a drop-in replacement for existing leisure batteries. They are compatible with most solar and mains chargers, making the switch seamless. One point to mention, LiFePo4 batteries are not suitable for split charge or voltage-sensing relay charging from the vehicle alternator. If you plan to charge your leisure battery while you drive, you should invest in a good quality battery-to-battery (B2B) charger.
Comparison to AGM Batteries
To summarise, the key differences between LiFePo4 and AGM batteries are:
Weight: AGM batteries are heavier and bulkier compared to LiFePo4 batteries of the same rated capacity.
Capacity: AGM batteries typically have a depth-of-discharge rating of 50% of their total capacity, while LiFePo4 batteries offer 90% to 100% DoD.
Lifespan: AGM batteries typically last 3-5 years, whereas LiFePo4 batteries can last up to 10 years or more.
Cost: While AGM batteries are cheaper upfront, LiFePo4 batteries are more cost-effective in the long run due to fewer replacements and lower maintenance.
Why should I upgrade to LiFePo4 leisure batteries?
Switching to LiFePo4 batteries isn’t just a battery upgrade; it’s a lifestyle upgrade. With benefits like lower weight, more available capacity, and lower lifetime costs, LiFePo4 batteries are the smart choice for any serious adventurer. Whether you’re a weekend warrior or a full-time van lifer, making the switch will power your adventures like never before.
So, what are you waiting for? Upgrade your leisure system today and experience the future of off-grid power. Don’t forget to check out the Ultramax range and use code T4UMX10 for an exclusive 10% discount at The Battery Masters.