Li-ion 4S 16.8V 4 Blocks Lithium Power Module Battery Capacity Display Tester Indicator

Size:20*45mm - These modules provide a quick visual reference of the charge status (capacity) of 18650 Lithium-ion batteries, as well as other lithium batteries with a maximum voltage of 4.2 volts per cell - This battery capacity display module is perfect for DIY power supplies, battery chargers, RC and electric vehicles, to provide quick and easy-to-read voltage status of the battery - Simply connect the module to the positive and negative connections of your battery or battery pack, and the charge status of the battery is displayed in real time using a visual bar display Display Amount of Electricity Parameter: 1. When the battery voltage is more than N * 3.3V, it will illuminate block 1 amount of electricity (Note: N represents the amount of battery). 2. When the battery voltage is more than N * 3.5V, it will light up blocks 2 amount of electricity. 3. When the battery voltage is more than N * 3.7V, it will illuminate blocks 3 amount of electricity. 4. When the battery voltage is