Olin, You are correct sir. I got my tongue wrapped around my eye teeth, and couldn't see what I was saying. I stand corrected. But either way, a 5 watt resistor would handle it. Thanks and Regards, Jim >> My suggestion would be to place a small value resistor (resistance) >> in series with the battery pack, and measure the voltage across it. >> Then calculate the current through the resistor (resistance). Since >> the current is the same in the components of a series circuit, that >> will give you the charging current. Say you used a 1 ohm resistor. >> And lets also say you measure 1 volt across that 1 ohm resistor. >> Current then would be 1 Amp. If you measured 40mV across the >> resistor, your current would be 40mA. > > Or better yet use an ammeter. This is exactly how multimeters work in > current mode. > >> This will be pretty accurate even with the voltmeter (DMM) >> connected because the input impedance of the DMM is probably at least >> 1 MEG and more like to be closer to 10 or 20 Megohms. And 1 ohm in > parallel >> with >1Megohm is still 1 ohm. Anyway, it's worth a try. Just make >> sure your resistor can handle the power to be dissipated. ie 2 watts >> should handle any current up to about 2 amps. > > No 2 amps would result in 4 watts using the 1 ohm resistor in your > example. Power = voltage x current = V**2 / R = I**2 * R. > > > ***************************************************************** > Embed Inc, embedded system specialists in Littleton Massachusetts > (978) 742-9014, http://www.embedinc.com > > -- > http://www.piclist.com hint: PICList Posts must start with ONE topic: > [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads