Being completely honest, when iseen this pack and the price i thought it was a right old con, given i'd been quoted over 3 times the price for less capacity from someone else. But after ringing and speaking to Ernest I thought it was worth the gamble and paid with paypal. We live in outback SA and have lived off-grid with some AGM's and mostly a generator for the past 3 years, so to say that we are happy is an understatement. Haven't started the Genny once since i installed these 1 month ago.