If you want 60A continuous definitely go with EM3EV. Probably the safest battery maker in the world. I sell batteries too, and give UK warranty but I have them built from to specification and out sourced. Dont always rely on UK builders, some talk the the talk and then have disastrous effects.Before everyone bemoans China sellers, remember where your: Iphone, Macbook, Specilized bike, TV and etc are made from. The problem with Chinese sellers are there are also or rubbish too, and the skill is the UK buyer knowing who to deal with. That takes time and experience and often a disaster for the individual. We buy our batteries (the 52V) from China, inspect each battery, know it has genuine cells and warranty here in the UK.