It can fit 6 pcs of 18650 Li- battery.. This is only a shell, there is no battery inside.DIY The capacity for your Machine battery .High quality for professional . High compatibility with device and more durable.Help to repair and assemble batteries pack.Battery protection board with single cell protection detection.For : 214730-01For V8 AbsoluteFor V8 AnimalFor V8 Animal ExclusiveThis product is component without battery core.It is used to repair and assemble batteries pack, only for people who are familiar with battery performance and have practical experience in battery assembly.Very important: the voltage of each 18650 cell is the before welding PCB.Please the voltage of each 18650 cell is the .The voltage of the cell should be above 4.1VPreparation before assembly:1. If a new core is used, please note:(1). Please 18650 lithium battery and small internal resistance, and parameters,Do not ordinary lithium battery for energy (2). please test the voltage of a single ,and charge the single battery so the voltage of each is the .The voltage of the cell should be above 4.1V2. If the old battery is repaired, please test the voltage at both ends of each cell. If the voltage is different, please charge each cell to the voltage value.Colour: Black Material: Plastic+Metal+PCBPackage Contents:1 set * 18650 Li Battery Plastic Case (The color of the protective plate is random, 't accept the specified color) (without battery)Only the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.