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Start w/ Nanotech 450mah 3S
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Cut them open
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Peelllll
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Without wrap
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Next start peeling off tape
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expose soldered wires to the cells
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Do the same the 2nd pack
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Start to separate out one cell
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I use prop to pry them apart (glued)
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Remove one wire from the balance lead
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Cut the cell free, note to cut so that there's solder left on BOTH side of the tab so you can solder to it.
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Desolder the wires
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Look at polarity and plan which way to sandwich
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look at wire placements
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double sided tape to secure new cel in
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Solder the + tab of the new cell to the - tab of the last cell
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Looking good
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measure and cut / extend balance lead
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Test to make sure you got the polarity right
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Solder on
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Move one wire from balance connector over to new balance connector one at a time
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Moving...
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once done, tripple check to make sure everything is A-OK
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New 4s batt weight 51g
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3s stock weight 40.63g
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