Who ever set up the parametric search for lead acid batteries doesn’t understand capacity, they can’t shift the decimal point so the order is 2.2 Ah, 2300 mAh, 2.5 Ah. The capacity of some batteries (Yuasa Yucel) is 12V! There is (apparently) a difference between 12V and 12 V when selecting the voltage. Shame about the carried they use, UKMail. I ordered 2 batteries on Tuesday and they were dispatched the same day, messed around all day Wednesday so I didn’t miss the delivery, phoned UKMail after 18:00 and was assured the goods would be delivered even if it was in the evening - they weren’t. Thursday morning ‘phoned UKMail’s customer services, they didn’t know if the goods would be delivered Thursday or maybe Friday afternoon or evening. Rapid may have been cheaper for the batteries I wanted, but the price difference doesn’t make up for days hanging around waiting for delivery.