| ...here, and they list charging times for yours on batteries as high as 2300mAh, so I would think it's unlikely that 2400 would be too big.
Unfortunately, I can't seem find a rated max battery capacity anywhere.
If the phone fails to use them and the charger fails to use them, I'd have to assume that the batteries themselves just became a more likely candidate. The real-slam dunk would be to find a charger that's specifically rated to be used with them and try it. If it still fails, it's the batteries.
Just try another charger of your model if you can find one. If it works, that eliminates the batteries themselves as the culprit. |