Motorola Original HNN9003AR: 7.5V/1500mAh NiMH Rapid Rate Battery. You MUST use this battery to fit with HLN3156 Blue Tooth wireless remote microphone system. Battery is formed so adapter can nest to battery. There are exposed contacts for adapter to gain power from battery.
Fits: HT750, HT1250, HT1250 LS, HT1250 LS+, MTX8250, MTX8250 LS, MTX850, MTX850 LS, MTX9250, MTX950, PR860 NOTE: To avoid confusion, for ordering purposes, the suffix letter after the stock number is not listed.