I picked one up today and it is amazing.i had a Sony vtc4 in my mech(fully charged) and swapped it out for the EFest and it was a night and day difference.The power this EFest puts out is awesome.i think I will designate the Sony for my VV/VW mods and only use EFests for my mech mods.I don't know why it took me so long to get one of these,worth every penny IMO