I have that light, and the regular solo.
I got pretty tired of the 14 hour per light to charge, plus I regularly was under or over charging it.
It is not the cheapest solution, but since I have two light and motion lights, I contacted Light and Motion. They sold me a "turbo charger for 125.00 shipped.
I know it sounds like a lot, but both lamps are really good, and I now can charge them in a total of 5 hours, and I don't have to pay attention, because they will not over charge. They get fully charged everytime, and now both batteries last a little more that 2 hours and forty five minutes