Portable Jumper Packs

Anyone here tried any of these portable jumper packs that are on the market? http://www.2wheelpros.com/antigravity-batteries-xp3-microstart-power-supply-2504368.html?gclid=CJ_f5Pb0nckCFQkxaQod7SgIEw


Cranking over the Rocket isn't like cranking your average bike but the claimed 400 amps sounds like it should work...better experiences with other products? :?:

I have a "Jump and Go" jumper box, never used it on Rocket but have started several cars and trucks. It started 2 F150s in a row so it should have no trouble starting a R3

I bought THIS ONE about 18 months ago. Fully charged it, put it in my Sissy Bar Bag and forgot about it. A couple of weeks ago, I took the bike out and when I got back, shut it off with the kickstand (as per) but forgot to shut the ignition off. Some time later I noticed, but it was way too late. I dragged out my regular booster but for some reason it didn't work. Then I remembered the little red box in my bag. Oh well I thought, I'll give it a try, fully expecting nothing. I connected the cables, turned on the ignition and pushed the starter. It fired up as if there were ten batteries connected! This is on a bike that I've been known to have cold starting issues with.
All I can say is, I was, and am., thoroughly impressed.

Thanks! Glad to hear they do work as advertised - gonna add one to my road kit! :Tip-Hat: