I used one of Eric's bags on a Mongoose Dolomite conversion. This product is well constructed, roomy (fit a 36V, 15 ah LiFePO4 battery with plenty of room to spare), good material, outside storage area, inexpensive, really sticky Velcro flaps, hidden (and probably weatherproof) cable entry/exit ports and attractive; what more could you ask for (if I forgot something, the bag probably has it and I forgot)?