Description Set is ready to use, all you need is just a water source and you are ready to go. All connections and fittings are included, also your preferred size water-fed pole comes complete. Imppressor “GS” Glass fiber water fed pole includes the items below:Brush (with pencil jets) (sill or square – according to our stock)Angle Adaptor,Push-Fit Y slitter,Hozelock connection,Standard hose.Handheld Digital TDS Meter With Carrying Case (To check your water quality).DI Pressure Vessel 11 Litre includes the items below:11 Litre. 8 x 17″.Hozelock connectors included.Comes full of resin. Our new improved stock backpack sprayer, pumping unit for Water Fed Pole Window Cleaning.Please see below all the specs.Full charge is enough for 4 hours of non-stop use on full power. The charging time is 4-5 hours.If you want to top up in the car/van you may want to buy an INVERTER.Which will convert DC 12 v to AC 240 v from the cigarette lighter, this way you can charge the backpack inside the car. It has a standard LEAD ACID. Please choose your connection carefully.The backpack comes with a battery installed within.We do not stock spare batteries. BATTERY which can be found from e bay easily.If you do not know which one you need please ask before the purchase.Backpack pumping unit : 1 – 20 Litre capacity 2 – 12 v 70 psi, 2.9 L/min pump 3 – Step-less variable pump controller. You can switch on the unit direct from the controller. 4 – Full power switch. When you switch on from the ON/OFF button it works full power and bypass the variable controller 5 – External Fuse holder, you can change and check the fuse externally without opening the unit. 6 – Led battery level indicator. We advise you to charge it after each full day of use without relying on the LED indicator. 7 – Our warranty is on INDUSTRIAL BACK TO BASE WARRANTY terms.