I've had my Eblade since November and have only changed the battery once from the one that came with it. This was probably because the guys in the studio left it on all week when they were taking pictures of it. I believe the battery issue may be due to people using lower-quality cells, but please prove me wrong. If I catch any 'bladers out there skimping by using £2 Happy Shopper batteries in ther £1000+ marker, expect a bitch-slap upside the head. Hard.