I've been looking for a while for something like this,just to aid starting in the colder months. Well,I came across this recently,and bought one. I've used it on my Super3,and it really makes a difference! Bike cranks and starts much quicker. I've always kept my battery 'topped' up prior to attempting to start the bikes,but you only get so much cranking power out from a battery? This gives 400 amps!! Plus,it's compact and transportable,can power mobile devices,and has a torch. Could save your sprag?
Yeah, I bought something like this but sent it back because one of the uses I wanted it for was to provided longer power to my travel laptop when camping. Unfortunately none of the plugs fitted my Acer so it went back. Never got to try it as a start booster.
My mate has the next one up, didn't work when he came to help me get the Steamer going after my alternator failure. Refused to switch on as the Steamer battery was below 9V, couldn't figure out how to bypass the auto setting so we had to resort jump leads off the car :icon_rolleyes:
I bought one of these , not as high a rating but so far it's done the job when I needed.
Apparently,pressing the 'red' exclamation mark button bypasses the 'safety' features,and sends a charge straight to the battery? Some good clips on YouTube of them in use.
This model has the smaller clamps. But it's not easy getting them to clamp on the small battery terminals! But you can remove them,and connect direct to the battery. Similar to connecting the permanent connectors of an Optimate charger,and the like.