Makita DVC861LZ 36V (Twin 18V) LXT Hybrid L-Class Dust Extractor - Body. this can runn off the 240v mains or be powered b y 2x makita 18v lithium-ion batteries. this has been used, still in fantastic condition as seen in pics. 
 
MAKITA DVC861LZ IS A TWIN 18V (36V) LI-ION CORDLESS DUST EXTRACTOR WITH AN INCLUDED CABLE THAT COMES IN EITHER 110V OR 240V. THEREFORE IT CAN BE USED AS A MAINS MACHINE OR POWERED BY BATTERIES.
It is the perfect way to keep your worksite (and lungs) clear of dust and debris while remaining fully portable when needed.  As well as general cleaning, this vacuum can also be connected to compatible power tools for instant dust extraction at the point of creation. 
The DVC861LZ is a solid yet portable cleaner thanks to the durable wheels.  Ideal for general cleaning, the Vacuum includes an L-Class* filter which can be cleaned when not in use.  It features a durable 8L dust tank.  It is also equipped with a HEPA Filter, it captures fine dust particles from re-distribution around the worksite with an efficiency rating of 99.75%. 
With the inclusion of a powerful motor, the vacuum is able to provide a constant level of suction power of 2.1 – 3.6 m³/min volume and 90 - 240mbar sealed suction.  The suction level is adjustable in case of needing to conserve battery power while a battery protection system will automatically turn off the cleaner when the battery level is low.
* L-Class Filter: L Class ≤ (less than or equal to) 1.0% Dusts with maximum allowable concentrations (MAC) > 1 mg/m³ for soft woods and solid surface material such as Corian.