My brother told me that because of its electrical component it some mechanics don’t want to work on them being that they don’t have the experience with working on hybrid cars.

The lifespan of the high voltage/hybrid battery is not the warranty period, it is in fact the useful life of the vehicle. Remember that hybrids have been on the roads in the USA now for almost 10 years. If the batteries were dying in large numbers, you’d be hearing about it. Instead, it’s just bandied about by poorly researched bloggers. There are a *few* instances of hybrid batteries dying, and in most cases they are doing so under warranty. Folks that have had them go out after warranty (say, after 110k miles) are finding the prices are dropping considerably from the doom and gloom figures quoted in years past. For instance, a Civic Hybrid on a forum I follow is at 109k miles and has a bad battery. Replacement cost INCLUDING labor? $2,500. Not too shabby considering the vehicle had no issues prior and has saved the owner (who bought it used, thus not incurring the drive-off “penalty”/depreciation of a new hybrid) considerably in fuel costs since they bought it.