We study generic Einstein-Maxwell-Kalb-Ramond-dilaton actions, and derive
conditions under which they give rise to static, spherically symmetric black hole solutions.
We obtain new asymptotically flat and non-flat black hole solutions which are in general
electrically and magnetically charged. They have positive definite and finite quasi-local
masses. Existing non-rotating black hole solutions (including those appearing in low energy
string theory) are recovered in special limits.