40G
WayneBruce, or others with a 2001 to mid-2003 Prius:
If you have not had this done, I suggest you do so. Having the potassium hydroxide solution out of the battery cells and inside the battery case is not good, but the point is to avoid having your battery pack's internal resistance increase. That would reduce performance, mpg, and eventually trigger a DTC.
Contact your Toyota servicer first, to insure that they have the required parts on hand.
DAS