I-Power Battery Kit A follow up

On RAMPS there have been many conflicting reports and statements regarding how effective the Ipower Batteries are. I have owned 12 batteries and 2 chargers since June of 2007 and have nothing but positive things to still report about them. All of them have preformed perfectly with no issues except occasionally suffering a sudden drop in voltage and dying quickly and have allowed me to cut down on Lithium 9v usage by 80% I only use them on a P.A feeds or in other situations where I will not be able to get to the tx if the I-Power takes a dump suddenly. Overall though they are a great product and I hope they will produce a more professional charger in the near future