Well if you go here:
http://www.circuitcentral.com.au/sony-psp-slim-lite-battery-1200mah.html
You can see what I mean. The product title "Sony PSP Slim Lite Battery - 1200mAh" is H1 and so is the heading "Sony PSP Slim/Lite Battery Features" (also H1) but you can see how the 2nd title "Sony PSP Slim/Lite Battery Features" is too big.