How can these be used for my application. Recent purchase of what looks to be a Schwinn Transit model turnkey factory E-bike. 2010??. I am at the infant stage of e-bikes and the currentSLA type 3 X 12volt 9.0AH batts. Are dated and need of replacement. This is a working set up, not without some problems.

I would guess (3 X12v) the bike is set up for 36 volt although the hub indicated markings 24V700C220W28KM (what is 700C?) 220W 28KM (what is 28KM?)

The neighbor tossed out a newer Kobalt weed whip w Li ion 40V 2.0AH 1 batt & 1 non working charger the reason for discarding it. It has been used very little. I have seen other Kobalt batteries the same size/part # online availiable new for $45 for 40v 2.0AH & $58 for 40V 4.0AH.
Could these batteries be useful?