i just use a backpack,fold away trolley and bungee strap for the few jobs a need a trolley on.perfect set up to complement a van mount.cost me about £150 all in.i charge the battery every week or so.i use a gardiners v2 which holds 19L but i think the v3 holds 22L.
I cut my wfp teeth on a loaned backpack and folding trolley so I would never knock it. I totally get why they are a brilliant bit of kit for someone with a van mounted system for those odd awkward access jobs.
However, that combo would be hard to get on with in a lot of areas I work. Many of the pavements are not in good repair and a solid tyred small wheeled trolley is very uncomfortable to operate, so I need something compact but robust. The Freedom trolley fits the bill nicely except for the weight. The trolley itself is very heavy (25kg) the same as a barrel a water. A large part of that is the battery at about one third the total weight of the trolley. I am looking for a way to reduce the overall weight. I've put pneumatic tyres on my trolley because the solid tyres it came with were so heavy and the pneumatic ones make it much more comfortable on the hands when pushing/pulling the trolley on rough pavements. However, the most significant weight reduction seems to be achievable by reducing the size of the battery as the one fitted as standard will give two to three days work on one charge and for me it's not necessary as my trolley goes on charge every night. It weighs 8.3kg (18.29lbs)
I know there are guys that use backpacks all day on one charge so I know it should be achievable.
It seems to me that I should change the battery for a smaller one. If a 7ah one will do the trick it only weighs 1.9kg(4.2lbs)
I know there is a hefty price difference but the 16ah Golf lithium one only weighs 2.2kg (4.8lbs)
Both of these would give a significant saving in weight. So I'm going to have a little play