Just picked up one of these on ebay for $160 free ship...had an 8-cell in my hypermotard that did very well, got the 12-cell for the 14R so I shouldn't have any trouble running my HIDs and power outlet. Gonna use Rook's template with the stock tray and use Home Depot-style clear acrylic instead of 1/4" plywood. Specs are as follows from the manufacturer:
Dimensions (Standard): 4.5" (L) x 3.5" (W) x 4.25" (H)
Weight: 1106 grams (2.44 lb)
Voltage (Charged): 13.6V
Amperage: 20 Pb-eq A/H
Pulse Cranking Amps: 410 CCA
Operating Environment: -18°C (0°F) to 60°C (140°F)
Typical Applications: 1000cc and over multi-cylinder motorcycles, metric cruisers, stock Sportsters, Softails, Dynas, large scooters, side by sides, jetskis and large ATV’s.
Was trying to decide between Shorai and Ballistic, Shorais were just a bit too pricey with less performance (and foreign).