Keith Green schrieb: > > Don wrote: > > > > I don't know electronics, but if I understand correctly from my > brother's > > > explanation, they are fine. As long as the circuit is designed to > handle the > > > voltage (1.2 volts per cell) the capacity has no bearing. (1200, 1600, > 1800, > > > doesn't matter.) > > Bob Sull wrote: > > Uhhhhh, the capacity does have a bearing. The higher the capacity, the > longer > > they last. The 1600mAH cells will last, in theory, a third longer than > the > > 1200mAH cells. > > The other thing to consider is the internal resistance of the cell. > I don't know any figures, over to the technical guys, but different types of > cells can can supply different max currents. > If the cell has a high internal resistance then it will supply a lower > current, i.e. less amps, which will slow operation. > Could a cell with low internal resistance supply a current high enough to > damage the electronics?
Yes, it could. If the circuit is designed poorly without any means of protection against too high current. Anyway, EOS flashes are designed to take NiCd batteries, which tend to have even lower internal resistance than NiMH batteries. So the use of NiMH batteries with the same voltage and higher internal resistance should be save. One thing that I found out though is, the flash doesn't seem to get fully charged with my freshly recharged NiCds. Maybe it's the lower voltage? I did some testing with a flash meter and a set of fresh 1.5V AA batteries made a stronger flash output than the NiCd set. But even with the 1.V batteries, the output became less after a few cycles. Thomas Bantel Thomas Bantel * **** ******* *********************************************************** * For list instructions, including unsubscribe, see: * http://www.a1.nl/phomepag/markerink/eos_list.htm ***********************************************************
