The Powacycle Salisbury is powered from a Lithium polymer (Li Pol) battery and 200W hub motor which gives it a range of up to 37 miles.
Gearing is a 6 speed Shimano derailleur and the wheels are 26 inch mountain bike. The bike comes complete with front suspension, a stand and rear rack for about £700.
The battery (at £250 for a spare) is good for 500 recharge-discharge cycles and therefore represents quite and annual cost compared with plain pedalling.
As illustrated the bike weighs 22KG (including the 2.6KG battery) which sounded really good to me, I've owned 19KG pedal only cycles before now.
Looking closely at the pictures it appears that the rear end should take most trailers and the front end most racks so this could be a really solid base for a work bike project especially considering powacycles 2 year guarantee.
The Salisbury can be pedalled, pedalled with motor assistance, or used just with electric power.