I have also had low/bad performance from my Panasonics ... as did my
partner .
I think much of that has to do with the charger you use. The best one I've
found is configured by the factory to the specific charging requirements of
your battery model. Check out:
http://www.xenotronix.com/products/leadacid/hpx-10.htm
Jim Vincent
N483SZ
illspam