That's a very good response. However the 85 lumens for 55 hours is certainly impossible, even with modern LED technology which members of this forum are very well aware of. I am assuming this was measured using ANSI methods down to 10% of actual brightness and therefore is due to the light being unregulated and giving most of it's output at a much lower level than the claimed 85 lumens?
If this is the case, it would be great for you to provide a 'runtime graph' showing the output curve from the start of runtime measurement to the 10% cut-off point. On this forum most accepted measurements of runtime are taken when the output drops below 50% of the starting or claimed value, so that would be another good piece of information to provide if the graph is to much trouble.