hi neil
does the battery get warm at end of charge ? if youre only getting 700 mah in i suspect not and they're false peaking
do you have a "cycle" function on your charger if so cycle a few times (if the batterries have not been used for a while they may be just a bit lazy
if voltage is less than 7.2 v you may have a dead cell
if all 3 packs are playing up it may be the charger at fault can you try another ?
dave
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