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Plantronics CS540 Spare Battery
Polymer Battery for Plantronics CS540 CS540A 84693-01 84693-11 84479-01 3.7V 140mAh - China Plantronics CS540, CS540A | Made-in-China.com
AKKU 30086: Battery for Plantronics CS540, Li-Po, 140 mAh at reichelt elektronik