NEW 4th Generation SMART
The ultimate lithium leisure batteries
Supercharged to help you go off grid for longer
NEW The power of SMART4 is here!
Gear you can trust with your life
Venturing into the wilderness requires total confidence in your gear. Whether rock climbing, paragliding, or sailing, your equipment must keep you safe and perform consistently under pressure. The same goes for off-grid adventuring and the reason we created SMART4. Just look inside and you’ll immediately see the difference. For unparalleled power, safety and reliability — choose Roamer.
Your blueprint for adventure
Our 4th generation SMART batteries are in a league of their own - expertly designed to fuel and sustain the ultimate off-grid lifestyle.
Matched and traceable grade A LiFePO4 cells with steel compression brackets and double-bolted busbars. Only the best cells go into a Roamer battery.
Our new 300A BMS features voltage, temperature, short circuit, and overcurrent protection, plus active cell balancing, all monitored via Bluetooth and CANbus.
Consistent high power requires more than the BMS; steel brackets, M10 terminals, and flexi copper busbars ensure durability and stability under heavy loads.
Waterproof screw cases and modular construction allow easy disassembly for servicing, repairs, upgrades, and recycling. You can even fix on the go.
Easy monitoring via the Roamer SMART app, while RS485 and CANbus ports enable firmware updates and connection to other batteries and Victron GX devices.
Every Roamer battery now includes a precharge resistor to protect your BMS from the surge currents that can occur when connecting a high power inverter.
Bluetooth-enabled Roamer SMART App
Battery Management. Simple
The new Roamer Battery Management System (BMS) and Roamer SMART Bluetooth app build on all of our experiences to date and add several highly-requested features from our customers.
With a full suite of protections including low temperature charging and a pre-charge resistor to prevent inverter surge currents, this is our most resilient and powerful BMS to date. We’ve also extended the Bluetooth range, tightened security, and added a sleep mode for power conservation and an emergency mode that allows you to override BMS protections temporarily.
Smarter than the rest
Plug & play with Victron
New CANbus ports allow for seamless communication with Victron GX monitoring devices, NMEA2000 and inverters.
Roamer repairs on the go
Roamer SMART4 batteries are modular and serviceable allowing for easy repairs and upgrades on the go, wherever you end up.
Precision active balancing
The Roamer BMS has a 2A Active Balancer for perfect cell balance even with irregular charging, enabling a true drop-in upgrade.
Customer stories
Hannah Whiteley & Chewie take Scotland
Roamer caught up with world champion kitesurfer Hannah Whiteley for a few days in Scotland as she took our beloved campervan - Chewie - and its 460SMART battery through its paces. Hannah was awarded Worlds Best Female Kitesurfer four years running, and knows a thing or two about travelling and living off grid. Witness her action-packed adventure in the short film below.
Shop Smart Series
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.
Ongoing support
We’re all about community. Reach out to us any time - we’re here to help.