Hi, Dave > I can't see current out of the battery, we tried it, and even a 0.01 ohm > sense resistor caused problems. > It's a 10A pulsed current, so it's 0.1V droop, in addition to the > unavoidable droop in the rest of the system. > > If I knew how much was spent, that would be one thing, but it might be 20 > all the time, and to make sure I handled it, i'd have to put in 50. > Overcharging by that much is a problem. The printhead is software controlled, right ? Can't you make a rough estimate based on software and reduce the problem without putting the batteries in danger ? It should be possible to have, at least, the magnitude of the power consumption.. best regards, Alexandre Guimaraes -- http://www.piclist.com hint: PICList Posts must start with ONE topic: [PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads