Battery failure - Hex Hex Wasp Micro Red Dot Sight

I installed the Wasp on my Hellcat and was very happy with the optic as I improved my target accuracy. That said, I have replaced the battery three times within three months. Not SA’s battery life claim of about two years. I emailed SA and did not get a response within three days so I called. The support associate emailed me a set of return instructions and FedEx sent me a mailing label. I was instructed to return the Wasp for replacement so I sent it out today. ‘Repairs will take 2-4 weeks’. I’m looking forward to reinstalling the Wasp and not having this problem in the future. SA did not admit to having a battery life issue or explain why the Wasp failed.