Battery type: Lithium ion batteryInput/output parameters: 10.8-12VDimensions: 59X52X23mmPrecautions:This product is only used as an output, and cannot be used as an input to charge the battery! ! ! ! ! !This product does not contain batteries! ! ! !Colour:yellowMaterial:plasticPackage Contents:3 x Battery ConverterOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.