EASY UPGRADES
Drop-In Lithium Power
The simplest way to upgrade a motorhome or caravan
NEWFULL COMPATIBILITY
SMART5 is designed to drop straight into your existing setup — no rewiring, no headaches, just smarter power from day one.
We have designed SMART5 to work with existing motorhome electrical systems and chargers. Choose from a range of easy upgrade batteries including the brand NEW 144SMART5, a high power lithium battery in the same low profile ‘lead acid’ case as the most popular motorhome leisure batteries.
SMART5 Makes Upgrading Simple
Use Existing Chargers
Active Balancing helps overcome problems caused by imperfect charge profiles, ensuring perfect cell balance even with existing lead-acid chargers
Run Flat and Recover
SMART5 Emergency Recovery allows you to ‘wake up’ a lithium battery that has dropped into low voltage protection, without needing a lithium charger.
                      
                    Store For Up To 2 Years
Storage mode reduces standby consumption to 2% per month and Active Balancing quickly rebalances cells, allowing you to store your battery for long periods.
                      
                    A Leisure Battery 
For Every Vehicle
Old or new. Big or small. Caravan or overlander. Roamer has a battery to fit the space, and all power you need for any off-grid adventure
        Roamer batteries work with a wide range of motorhome charging systems including Schaudt/Lippert, Sargent, CBE, Nordelletronica and more.
A range of compact batteries that can fit under a standard seat of almost any motorhome including the 230SEATBASE5 and the new 340SMART5.
The new 144SMART5 battery offers all the standard SMART5 features but into a traditional lead acid style case, with standard battery posts and fixing points.
Connect as many SMART5 batteries in parallel as you need, for maximum capacity and flexibility. With SMART5 you can also add batteries at a later date.
Alternator Charging
Older motorhomes (pre 2018) are usually fitted with a split charge relay (VSR) to allow for charging from the alternator. This is a crude solution that connects the vehicle and leisure batteries together when the engine is running, to allow the alternator to charge both batteries while driving. The mandatory fitting of smart alternators for modern vehicles, and the invention of Battery to Battery (DC-DC) chargers has made this solution obsolete although many motorhomes still have a split charge relay system in place.
It is not essential, but when upgrading to lithium, we usually recommend you upgrade to a DC-DC charger. Roamer SMART5 batteries can be charged with either system but a DC-DC charger will give you much faster, more consistent charging, with control over the charge voltage and currents. 
If you would like some extra support upgrading your chargers, we have a range of system specific articles on our Support Hub. Or if you decide you’d rather let a professional handle the installation, we have a network of over 340 installers around Europe who can assist.
“Most of the time we go off grid, we very rarely use campsites now.”
CUSTOMER STORIES
Motorhome upgrade with the Purdeys
Pete and Joan Purdey and their gorgeous pooches from County Durham are enjoying the luxury of travelling off grid in their Monte Carlo since they upgraded their leisure battery to lithium. Their super powerful Monte Carlo now enables them to adventure off grid for longer with 100% peace of mind, whilst enjoying all their home comforts on the road.
System Design
Looking to upgrade the rest of your electrical system? Check out our Electrical System Design service - this includes a 30 minute consultation, custom system specification with wiring diagrams, install support and a fully itemised quote with price-match guarantee.
Professional Installation
We know how overwhelming it can be when you first start converting. If you decide you'd rather hand over the reins to a professional, Roamer can match you up with one of our 340 approval installation partners who can fit your battery, upgrade your electrics or install a completely new system.