Wes, Oh, I do understand the UC3906 charge controller. Its bulk charge is a constant current source, which means the voltage is not controlled (except by the battery). Once the voltage reaches the V12 point, it goes into an overvoltage charge until the current drops to a defined rate, then it goes to the float voltage.
The various voltages and current states are determined by the choice of resistors. If the battery has high resistance and does not want to take a charge willingly, the charger will start out with the bulk charge and almost immediately switch to the overcharge voltage, and may never go to the float charge state. So 16 volts is not an improbable situation, it all depends on the battery condition and the resistors chosen by the designer of the charger. 73, Don W3FPR On 5/27/2011 5:03 AM, Wes Stewart wrote: > > It's not unusual to do equalization charges on wet batteries at over 15V. > Bulk charging does NOT apply excessive voltages as one commentator cannot be > made to understand. And the myths go on..... > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
