Ultralast Battery

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This replacement 3.7 volt 140 mAh Lithium Polymer battery fits the Plantronics CS540 Headset and meets or exceeds original manufacturer specifications. 140 mAh capacity ensures sec ure power flow to your headset Can be used multiple times, hence saving your money A light-weight battery with improved safety 3.7 V DC battery - Powers your headset safely Show more