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Genuine Motorola BT91 OEM original 1640mAh extended battery.  Have an extra battery ready if your charger isn't handy or if your battery is drained

Compatible with the following Motorola models:

KRZR K1m, Q, Q9c, Q9m, W385, W755, Z6m, Z6tv

Battery requires extended battery door (sold seperately)

Guaranteed new and genuine Motorola OEM original product.  Part # SNN5765A