Aside from this being a VERY WASTEFUL PRODUCT, I found a list of models that it works with, from cellboost.com
Mini-USB MUSB1
Motorola Models: RAZR models (V3, V3c, V3m, V3r, V3t, V3x, V3xx), SLVR models (L6, L7, L7c, V8), RIZR models (Z3), models A668, L2, L6, MPx200, PEBL U6, Q, V190, V195s, V235, V323, V325, V325i, V360, W315 and more...
BlackBerry Models: 6200, 6210, 6220, 6230, 6280, 6500, 6510, 7100, 7100g, 7100i, 7100r, 7100t, 7100v, 7100x, 7130c, 7130e, 7130g, 7130i, 7150t, 7200, 7210, 7230, 7250, 7280, 7290, 7500, 7510, 7520, 8700c, 8700g, 8700r, 8703e, 8705g, 8707g, 8800, Pearl and more…