I've had some problem finding out what Battery is best to fit to my 'new' 2014 Yaris Hybrid  - most Battery suppliers offer a 054 flooded lead acid Battery as a replacement This morning I took out the back seat to get easy access to the top of the battery and have discovered that the original battery is a  Yuasa Auxiliary AGM HJ-S34B20L-A GS Battery It's had a good overnight charge, and is now looking a lot healthier than before!  (SOC 100%  SOH 100%!)  One thing does puzzle me.