I am looking to find out what later model years had NIMH Batteries that would be compatible with 2008 Prius batteries. Two years ago I replaced my 2008 batteries with ones from a 2012 year prius they worked fine until now .also how can they be identified. Thanks for any help
Everything up to a 2015 NIMH pack are compatible ... Here's chart for deciphering serial number to know date of manufacture: