Even at maximum charge, 2 14.4v nominal LiPos won't exceed (or approach) the maximum 40v of a Ragebridge 2. I'm not with the batteries to measure them. However, assuming Colin hadn't fully charged any, and they were at the last measured voltage I did, they'd be around 26 to 31v together.

Exact voltage limits is 8 - 40v absolute, 12 to 30v nominal for the Ragebridge 2.