BP-900A
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Rechargeable Lithium-Ion Battery
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Lithium-ion battery shall be rechargeable and supply DC power to a TOA's infrared wireless conference unit.
 
Nominal voltage:  7.2 V
Capacity:   2100 mAh
Dimensions (W x H x D):  71.6 x 20.5 x 37.5 mm (2.82" x 0.81" x 1.48")
Weight:   95 g (0.21 lb.)

The infrared wireless conference unit shall be the TOA model TS-821, TS-822, TS-921 or TS-922.
Associated Product: BC-900 battery charger manufactured by TOA Corporation

Manufacturer: TOA
Model:  BP-900A