Enduralast charging system - does it work?

[cjleroux]

I have a 1981 BMW R65. I mostly make short trips so the battery often needs charging.

Has anybody bought and installed this: http://www.euromotoelectrics.com/product_p/edl450-altkit.htm ?

It claims to boost charging power output by 80%.

It's quite expensive, around US$500, so i'd like to hear from anyone that bought it.