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It definitely seems to be working fine from what I can see.
Just in case though, what would you recommend instead? Optimate 3?
I've had Optimates, Oximisers and many others over the years, and as far as "recovering" batteries is concerned, after a lot of reading, research and real-world experience, I've come to the conclusion that once you've damaged a lead acid by deep discharge or sulfation, it's basically going to die whatever you do. It's just a matter of time. These days I just use my trusty old Gunson automatic charger when I need a top up, and at the first hint of issues I just buy a cheap replacement. Expensive "Premium" replacements seem to behave identically to cheap Chinese ones. Not very enviro-friendly, but what are you gonna do?
It does seem to me that batteries are way more consumable these days than they once were though. In the 90s I used to leave bikes for months, chuck them on a charger overnight and ride away.