Very happy with the service from The Battery Guys! Delivered the next day. Brilliant price too for a Dynavolt DTZ10S-C Motorcycle battery. Same battery was £20 dearer on other sites! Had a Yuasa battery on my bike, (CB1000R 2018) which let me down. As any bike battery only comes with a 1 year warranty, why spend too much, especially as I will be looking after this one, and keeping it an optimiser charger. I did the same with the Yuasa battery, but the previous owner may not have done the same. I chose this brand as they sponsor Moto 2 teams. All the reviews rate the batteries. Only time will tell, I guess............