A battery charging system which prevents false switching from a fast charge mode to a trickle charge mode due to low frequency voltage aberration signals. The battery charging system includes a battery voltage analyzer and a plurality of battery charging and conditioning units for charging different...http://www.google.com.au/patents/US5177427?utm_source=gb-gplus-sharePatent US5177427 - Battery charging system and method for preventing false switching from fast charge to trickle charge
