I hate to say, but it kinda is. They sent out these kits, without checking that they would be accepted into the countries to which they were sent. We backed them, sure, we should have expected this, but since they’re the manufacturer and supplier, well, it’s something they should have been aware of, and warned UK backers that what we got would either have to come without a battery, or with the battery pre assembled.
What is their fault also, is not sending out timely emails via Kickstarter, updating on the situation. It’s not fair that backers have to go hunting for the answers in forums, when the lines of communication between backer and supplier are always supposed to be open.