Motorola Original HNN9018AR: 7.5V/1200mAh NiCD Rapid Rate Battery.
Fits Radio: SP50 standard model. Note Size 3-3/8" high x 2" wide. This battery is for the SP50 standard model. If you have the SP50+ compact, use battery# HNN9044.
NOTE: To avoid confusion, for ordering purposes, the suffix letter after the stock number is not listed. This battery has also been known as the HNN9018A and HNN9018AR