I got this charger as part of a package. So far, it has worked great, no problems. The light shows connection, which showed me that I had a bad solder joint on one of my batteries. For the price, it can't be beat.
Easy to use
Is actually an "economy" smart charger. Red LED for low charge; blinking red LED for extremely low charge, does a trickle charge to get started; green LED means fully charged, switches to trickle charge.
Charges very quickly
Not as fancy as more expensive chargers
Only rated for 8.4V and 9.6V
Only has a connector for mini