My car, GS300 MK3 2007. Current battery is a Halfords HB030 and when my local garage serviced the car this week they reported that the battery had failed their Battery Test. In their opinion Halfords batteries are rubbish! They recommend Yuasa and Varta. Just checked prices etc, Halfords offer Yuasa HB030 (same number as their own Halfords battery) £166.49 inc. fitting. The Yuasa website quotes YBX3030 72Ah and 630 amps, whereas the Yuasa HB030 at Halfords says 75Ah and 650 amps, you'd think they would be the same. My local garage can supply and fit the Varta E23 (570412063) at £156. A company local to me in Stockport, advancedbatterysupplies.co.uk can supply the Varta at £165. They can also supply their own branded Advanced 068XD Type, 5 year warranty at £145 with mobile fitting. Anyone on here got a preference for Halfords, Yuasa or Varta or Advanced branded batteries?