["Features:\r\nPower is more intuitive, more beautiful\r\nStatic no current, no power consumption\r\nWider Use range:1-5 string lithium battery pack, 3-15 string of nickel-metal hydride batteries both can be used\r\nSpecifications: \r\nVoltage：3.3-4.2V\r\nWide application fields:lithium battery\r\nUsing Method:connect display board positive and negative port with tested battery positive and negative port,digital tube will display real-time battery electricity quantity\r\nDisplay Electricity Quantity Parameter:\r\n1.When battery voltage is over N*3.3V,it will illuminate 1 block electricity quantity (note:N represents battery quantity)\r\n2.When battery voltage is over N*3.5V,it will illuminate 2 blocks electricity quantity\r\n3.When battery voltage is over N*3.7V,it will illuminate 3 blocks electricity quantity\r\n4.When battery voltage is over N*3.9V,it will illuminate 4 blocks electricity quantity\r\n5.When battery voltage is less than N*3.3V,4 blocks display will be off;it represents battery is less than 3.3V,and you can charge the battery\r\nProduct size:about 4.1*2*0.7cm/1.65*0.79*0.28inch\r\nQuantity:1Pc\r\n\r\nNote:\r\nSize for manual measurement, there may be a 0 to 2 for cm error, belongs to the normal phenomenon.\r\nAnd due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage include:\r\n1Pc X module"]