yeah, you can do 2 x 1s charging on a pair of saddles to get them up to 4.2V each.
Only issue is unless you get them paired up properly (don't you have a big number 1 on top of one pair and a 2 on the other?) they will have slightly different discharge properties, as i doubt both pairs have seen exactly the same duty since they were bought........... one pair will be slightly more aged.
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