Features: PCB Board (No Cells) for 12V Lithium-ion Battery – Quality double side fiberglass construction designs for repairing and rebuilding 12V lithium-ion battery packs with enhances safety and durability. Flame resistant fiberglass substrates ensures reliable thermals management and long use performances in high demands power tool applications. Ideal for professional technicians and DIYer enthusiasts with advanced knowledge of lithium-ion battery maintenance and assembly processes. Perfect for restoring malfunctioning batteries for 12V lithium-ion battery or creating powering solution for drills, sawing, and outdoor equipment. Precisions engineered circuit layouts maintains voltages stability and compatibility with original battery specifications for 12V lithium-ion battery. Specifications: Material: Double-side fiberglass board Color: As pictures shown. Length:Approx.5.0cm/1.97in Suitable for: 12V lithium-ion battery Package Includes: 1pc Circuit Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color the item.