Hign-concerned Chemical: None Package: Yes Model Number: KK Name: dawupine : DCB612 Lithium Battery PCBA For 20V 60V Battery DCB609 DIY (semi-manufactured goods) Advance notification(Very Important): (1). To use this product, you need to have some professional knowledge and experience. We do not that you can use it well. (2). You must have 21700 POWER li-ion batteries and the tools such as spot welding machines, soldering irons, multimeters, and suitable chargers, etc. (3). This product has no after-sales service. After placing an order, it not be returned! No refund! No after-sales! No refund! No return! Please purchase with caution! (4). The size and color in the picture are for reference only. The actual received goods shall prevail. If you raise any objections based on "color and size differences", please do not purchase! (5). The PCBA label may not be exactly the same as shown in the following picture and may change with the batch. Please do not mind! Do not purchase if you mind. No Original, 100% New, No Battery Cell !!!!!! Color: As Shown Material: PCB Package Contents: 1*Lithium Battery Case Only the above package content, other products are not included. Note: Light reflection 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.