Replacement battery fits 12 RTI compatible models. Specifications: 1200mAh, 3.7V, Li-ion. Compatible with: PROBAT PRO CONTROL, Pro, Pro24.i, Pro24.r, Pro24.r v2, Pro24.z and 6 more compatible models. Replaces: RTI 41-500012-13, RTI ATB-1100-SANUF, RTI ATB-1100-SY3450. RTI replacement battery designed for Remote Control devices. Simple plug-and-play replacement requiring no modification.