Although 1S Lithium Battery Capacity Indicator 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.

Although 1S Lithium Battery Indicator is perfect for DIY power supplies, battery chargers, RC.  And electric vehicles to provide quick and also easy-to-read voltage status of the battery. In addition 1S Lithium Battery Capacity Indicator color is red, and the display bars are blue.

Dimensions of 1S Lithium Battery Capacity Indicator 

Indicator Display Range:

1. 1S Lithium Battery  Indicator Module: 3.3V - 4.2V

Battery status display:

1. When the battery voltage is over N * 3.3V, it will illuminate 1 bar (N represents the number of battery cells, e.g. 1, 2, 3 or 4).
2. When the battery voltage is over N * 3.5V, it will illuminate 2 bars
3. When the battery voltage is over N * 3.7V, it will illuminate 3 bars.
4. When the battery voltage is over N * 3.9V, it will illuminate 4 bars. 
5. When the battery voltage is less than N * 3.3V, none of the bars will illuminate, indicating that the battery is less than 3.3V and in need of recharging.

Features of 1S Lithium Battery Indicator:

Package Includes:

• 1 x 1S Lithium Battery Capacity Indicator Voltmeter Module