Meet the Roamer 320SMART3 - our 3rd generation 320Ah LiFePO4 battery for off-grid vehicles with high energy demands. The integrated Battery Management System (BMS) with Bluetooth provides remote monitoring via the Roamer BMS app and a market-leading discharge rate of 250A (500A peak) lets you run any domestic appliance up to 3200W via an inverter.
Buy the Roamer 320SMART3 and get a FREE electrical system design consultation worth £120.
FREE Roamercare with every battery – includes 15 minute kick off call to support installation.
Easy 14 day returns
Not entirely satisfied? Send it back within 14 days for a money-back guarantee.
10 year warranty
That’s how much we believe in our product. A decade of powered adventures.
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2.5 X the power of any other lithium battery brand
Our premium LiFePO4 cells provide an exceptional amount of power for their size, delivering a continuous charge/discharge rate of 250A. The state-of-the-art cells also ensure stable voltage throughout the charge and discharge curve and a long lifespan of up to 3500 cycles at 80% depth of discharge.
The upgraded BMS will actively balance all internal cells and supports installation of up to four 320SMART3 batteries in series or parallel - with auto balancing for parallel connected batteries. It provides a complete range of protections including low temperature charging.
High quality power for high-powered adventures
The Roamer 320SMART3 uses the highest quality Grade A+ matched cells and comes assembled with precision-engineered brackets, laser-welded cell connections, flexible copper busbars and an IP65 waterproof case.
Maintaining excellent balance throughout its 15 year life expectancy, your Roamer will deliver stable, high power with every cycle. Our additional factory and warehouse testing processes ensure the highest possible quality and because we believe in our product, we back everything with a 10 year warranty.
To ensure maximum lifespan, every 320SMART3 comes with a state-of-the-art internal Battery Management System (BMS) with Active Balancing - developed specifically for Roamer to support high power off-grid living.
Discover more about our powerful 3rd Generation SMART Batteries.
Your adventure starts with your setup. And with Roamer, it’s quick and easy. Simply choose your battery location, attach the cables, configure your chargers, and download our Roamer BMS app for real-time monitoring. Uninterrupted power = uninterrupted adventure.
We understand the prospect can be quite overwhelming so if you'd like some support, we offer an off grid electrical system design service. You will spend time with one of our experts who will give you all the tools and advice you need to install your own electrical system, even if you've got no idea where to start. From choosing chargers to cable sizing and configuring settings, we've got you covered.
The power of the Roamer 320SMART3
5/5 average rating
“Fantastic service from start to finish and the post sale backup is second to none.”
Here at Roamer, we take safety extremely seriously and strive to make the safest LiFePO4 batteries possible. It is no secret that Lithium can be dangerous and whilst LiFePo4 is without doubt, the safest option, it is still not without risk. And that’s why we go above and beyond on both compulsory and voluntary extensive safety tests and processes. We choose to test every single battery before it leaves the factory by cycling to 100% and 0% and applying a high charge and discharge load to identify potentially faulty cells and connections, test BMS performance and verify cell balance at the top and bottom of the voltage-charge cycle. Our SMART3 batteries use only traceable branded cells from reputable manufacturers with lab test reports to verify battery safety as part of the EN 61619 certification. Finally, our product and fulfilment services also meet the courier requirements to ship Dangerous Goods under the UN3480 certification. Find out more about the steps we have taken to ensure maximum safety here.
Know your power with the all-new Roamer BMS App - the ultimate wingman for uninterrupted adventure. It’s easy to use, connects via Bluetooth, and lets you track and monitor the status of your battery from the comfort of your van, boat, or home. Real-time feedback at your fingertips.