HCH3 = 2012+ with Lithium batteries. I have no specific reliability information, but I would expect them to be better than all previous Civics or the G1 Insight. Probably on par with the G2 Insight and CR-Z.
HCH2 is 06-11, but they changed the battery in 09:
2006-2008 battery failed about 16% after 7-8 years
2009-2011 battery failed about 30% after 3-4 years
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