Don"t get caught without power, have a spare, rechargeable NiMH battery on hand. This helps reduce downtime due to a depleted battery. The battery is easy to carry, easy to change.Compatible with: EM, FV500, FV600, FV800, MC, MD, MJ, MR, MS, T4800, T4900, T5000, T5320, T5400, T5500, T5600, T5700, T5800, T5900, T6500, T8500, T9500, T9680 Series.Does not work with the 7000 or SX700 series.