http://www.siriuselectronics.com/ind...=index&cPath=1

I have the Sirius charger and Battery Test. I like the tester but the charger in my opinion charges too harshly for smaller batteries like 600mah. With regular batteries it false peaks. I think fast charge cells would not have this problem. With larger mah batteries it works great.

NiMH battteries have about double the rating of nicads ,so AA size batteries can have 1200 or more mah so more battery for same size(peace of mind), or with scale getting a 600mah NiMH you can have a battery 1/2 the size to get in small spaces.

Never leave the factory charger on the battery after it is charged; trying to keep it topped off this way will ruin it.