Hi Wes, I could be wrong on this, but I think what you say is correct if considering charging the battery alone, but is thrown off when you consider powering the K2 with the batt via the smart charger.
For example, my K2 receive current is about 400 mA with a bunch of options. Let's assume that my KBT2 battery is fully charged. Let's further assume I built my charger to use a 500 mA bulk charge. When I turn on my K2, the charger thinks the battery needs to be charged, and therefore offers up its 500 mA bulk charge. 400 mA goes to the K2, the excessive 100 mA goes to the battery that is already fully charged, thus the possible overcharge situation (again, correct me if I'm wrong on this). What Don is suggesting is to build the charger with a bulk charge BELOW what the K2's receive current is. In this case, a bulk charge of 250 mA. Therefore, when I turn on the K2, the charger offers up 250 Ma, the battery offers the difference, 150 mA. If it's run this way for hours and hours, eventually the battery will be drawn down, in which case the A&A Engineering Charger has the option of switching to a higher bulk charge (1 amp for example), which can power the K2 AND charge the battery. If I could somehow mod the smart charger to provide EXACTLY the same draw current as the K2, then I think you are right, the chance of overcharging the battery is nil. 73 N5BCN - Brian ----- K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB -- View this message in context: http://elecraft.365791.n2.nabble.com/A-A-Engineering-Charger-KBT2-tp6342835p6468051.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
