Getting a quick re-charge allows me to make more use of my battery powered lawn tools. The standard charger requires about 240 minutes to recharge, while the rapid charger only requires 90 minutes. I purchased as a spare so I can use my edger while my wife is using the lawnmower.WorksWe use it to charge batteries for a blower we use every day in our barnWell I have had it only for a month but it seems more rugged that the original charger that I bought with the saw a couple of years ago. (it died). The saw also died, but I was very pleased with the quick, hassle free, no charge replacement of the motor and controller.This charger performs as advertised. In ½ hour my Oregon chain saw battery is back to full charge. Furthermore, the C750 cools the depleted battery by cooling fan, while charging it thus removing the heat created by rapid charging.At the end of charge the battery case is cool to the touch.This charger is worth every penny invested in it.For when you don't have 2 hours plus to charge the 4.0AH battery. I carry this and a small generator out in the woods along with 3 batteries and the chainsaw. I can cut all day and I have power to do whatever I want while I'm there.Why get the slow chargerI have only used this charger, a few times, but it is very fast and have no problems. I would definitely recommend it to anyone using the chainsaw or trimmer for an extended amount of time and needing to charge batteries, quickly.