As an aside, the battery pack front and rear are the object of derision and mockery at times but the lights never wavered and we had several lighting failures this evening. In cold weather, twice the battery capacity one thinks one needs might be just enough. Get more than you need. Cheap blinkies don't cut it when it's 30ºF and you've been out for a couple hours.
Sounds like you are ready to make the leap to DYNAMO!