@Kfirrer - sorry to hear, damn, bad things happening to good people. If I'm not mistaken, you're the genius behind the grasshopper feeder. If I'm correct, it's an additional drag for you, being in IsraelGot a new hopper last week, same blinking lights problem with new(gh2+gh3) battery's as well.
Cleaned all contacts but no change.
I opened a complaint a hopper labs and got a reply that i need to change the battery's....
i replied that it didn't help-no answer...
I think they have a problem with the LVC(low voltage cutoff) on the new hoppers.
Wish I could teleport you a new GB3 for testing. Or, better yet, Max's AC adapter, which would be a perfect fault/variable isolation tool
Hope a new battery is a solution for you, and thanks again for your hopper feeder contribution