Using ptr-10401 LiPo Charger on a 24.8 Whr battery
LiPo chargers have 3 stages and is completely safe on bigger batteries of same cell voltage.

The CC stage  is 1st will limit current and just be a much longer duration. Safe.

The CV stage is 2nd and stay there until current drops below expected leakage thresholds. Safe.

Shutdown or charge-completed is the 3rd stage.  Safe.

CC means constant current and some fast chargers will be designed for say C/10 or C/20 meaning Ah capacity /10 or /20, for example. There is no universal current value for all LiPo batteries.

Just be sure the cell string voltage is the same before stage 2.