I've had loads of backpack over the years and they never last 2 mins.I've had the water genie, big boy, gardienrs and a couple of ebay specials. They ate all the same..I wouldn't get another I'd just get a trolley with a shurflo pump they are way better made
I really don't know why you guys want to pay so much for a backpackive got 4 or 5 of these https://pay.ebay.co.uk/rxo?action=view&sessionid=1768621294011all slightly different styles - they range from 5 to 3 years old - they have been as good as my gardiners one I brought donkeys years ago - that lasted about 4 yearsDarran
Think it’s this one. There’s a panel that comes off and the battery is removable https://www.ebay.co.uk/itm/Pump-sprayer-Shoulder-Backpack-Battery-16-LT-for-treatments-weeding-29282-/274628238252?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=724-127637-2357-0