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Old 10-11-18, 02:51 PM
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fietsbob 
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series adds up the voltage , parallel increases the battery amp hours ,
so series-parallel wired cells .. can be both..



8.4 is 7 1.2 v cells in series..

I made up a 5 D cell series, battery pack to run my 6v head and tail lights
for an hour long commute in ..1990 ni cad, back then..






...

Last edited by fietsbob; 10-27-18 at 03:26 PM.
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