On 17 Mar 2019 at 16:39, ken via EV wrote: > I like to see some kind of a charger timer that could control the input > to the charger as on/off
This is pretty much what a cycle dropping charge controller does. It's a relatively simple (crude) method. The charger is designed to produce a voltage higher than the battery's fully charged (on charge) voltage. The controller monitors the voltage, and shuts off the charger when it rises above some threshold (typically 2.35 to 2.45 volts per cell). With the charger off, the battery voltage then falls until it crosses some lower threshold (hysteresis), and the charger turns on again. This cycle repeats, usually for hours. As the battery works its way through its absorption phase, gradually the on time becomes shorter and the off time longer. This effectively tapers the average current as the battery reaches full. Normally the switching is done at the charger output, but I've seen one oddball charger where the charger INPUT (tansformer primary) was switched on and off. David Roden - Akron, Ohio, USA EVDL Administrator = = = = = = = = = = = = = = = = = = = = = = = = = = = = = EVDL Information: http://www.evdl.org/help/ = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Note: mail sent to "evpost" and "etpost" addresses will not reach me. To send a private message, please obtain my email address from the webpage http://www.evdl.org/help/ . = = = = = = = = = = = = = = = = = = = = = = = = = = = = = _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
