On Mon, 24 Sep 2007 01:09:09 -0400, "Ed Huntress"
wrote:



Now -- if you added a diode in series with each series string
before paralleling them, you should be fine -- but how much would the
eight diodes add to the cost of the battery? :-)

Not to mention the voltage drop of four diodes in series -- something like
2.8 V? Add more cells... d8-)


The diodes would be in parallel, not series. One diode for each 4 cell 6V
string, Eight diodes in all. If they were Schottky diodes, the voltage drop
might be acceptable. But the cost just keeps going up. Unless the production
rate of F cells has dropped to the point where they are uneconomic.


Be much more fun to have two proper sized Lithium cells. IED anyone?



Mark Rand
RTFM