One thing to be aware of. Yuasa are manufactured all over, including China and Taiwan as well as Japan. The Japanese made batteries are always good but some of the Taiwanese were a bit suspect I found, but I am not sure if they were forgeries. As a wholesaler I sold lots of batteries and generally the ones that were returned as faulty were usually suffering buckled plates from being overcharged on a car charger. Rule of thumb is not to exceed 10% of the battery rating when charging ie 10ah battery @ 1.0 amp.

Very good advice dogsbody.