There are three main methods of propulsion used within the UK:

Rear wheel drive is the most common method and gives the highest speed, although the turning capability is more restricted.  Front wheel drive is not as fast but turning capabiity is much improved.  Mid-wheel drive models are usually the best for turning but not as good when it comes to bumpy ground.

Electric chairs in the UK are powered using rechargeable batteries, of which there are three types.

Wet Batteries – these need to be topped up with water so need maintenance.  They are also more likely to leak.  However, they are also comparably cheap, light and do perform well.

Gel Batteries – these are heavier and more expensive but there is no need to add water so there’s no maintenance to do and they won’t leak.

Absorbent Glass Mat Batteries (AGM) – similarly, these won’t leak and require to maintenance.  They are the most expensive option but they are much more shock resistant than the other two.