LM3914 10 Segment 3.7V Lithium 12V Battery Capacity Indicator Module Power Level Tester LED Display Electronic DIY Kits

Quantity : 1 High-concerned chemical : none Package : SMD is_d : Yes Dissipation Power : LM3914 10 bit power indicator Supply Voltage : 3.7V Type : Module Brand Name : Gaqqee Operating Temperature : 0-50C Origin : Mainland China Condition : New

features: This is a DIY kit that requires you to assemble it yourself The battery level display takes some voltage and simulates the percentage of the display segment. For example, for a 3.7V lithium battery, the lower voltage is taken as 3V, the upper limit is 4.2V, 4.2-3=1.2V, and the lower limit of the voltage difference is 1.2V, which simulates the battery startup LM3914 can accurately detect analog voltage Easy to use Application scope

Parameters: Display Description: The battery voltage is displayed within the lower limit of 10 files, representing a 10% charging display for each lamp and a charging range of 0% -100% for 10 lamps; You can also change the single light display to only show one light, with a higher power of 4mA for a single light and 42mA for full illumination. Adjustment of display range for various high and low voltage batteries: 1. Lithium battery: The voltage of a single lithium battery is 3V after discharge and 4.2V when fully charged; 1S corresponds to 3V (first lamp) to 4.2V (tenth lamp); 2S corresponds to 6V (first lamp) to 8.4V (tenth lamp); 3S corresponds to 9V (first light) to 12.6V (tenth light); 4S corresponds to 12V (first light) to 16.8V (tenth light); Other series of voltages, etc. 2. Lead acid batteries 6V or 12V lead-acid batteries are generally: 6V corresponds to 4.8V (first red light) to 6.75V (tenth light); 12V corresponds to 9.6V (first red light) to 13.5V (tenth light); This module is designed based on the above standard battery discharge range, which can accurately reflect the battery and allow users to observe the battery status at any time.

Adjust the following methods: Required equipment: Adjustable power supply, precise panel display determines accuracy. Watch screwdriver. In the case of a single 3.7V lithium battery, there are fewer low-end power supplies of 3V, and 4.2V is the high-end power supply with full power. 1. Change the adjustable power supply voltage to the desired voltage, display a high level of 4.2V, connect this board, and there are two results: one is not lit, and the other is fully lit or lit up a few times. At this time, slowly adjust the potentiometer of board 503 (50k) until the LED light bar just lights up completely. When all lights are turned clockwise, multiple lights do not light up or are adjusted counterclockwise. 2. The power supply voltage can be adjusted to the required low end of 3V. The potentiometer of adjustment board 502 (5K) only lights up one LED and does not adjust the light clockwise. It lights up several or all of them counterclockwise. 3. Patiently repeat step two. Usually adjust twice to the desired display range. Display mode A/P: Full brightness linear/single light grid mode switch, default is linear mode, the board reserves a switch pad, even with the use of solder pads, it can also be changed to full light linear mode, without the need for solder joints for single light display

be careful: To adjust their voltage, follow the adjustment sequence, emphasize the high end, and then adjust the low end. The red color should be positive, then negative, and black. Do not reverse it. This module has a maximum limit voltage of DC 20V. Please use anti-static welding or soldering table pull electric welding.

Package List: LED display module components * 1 label:yes

Battery capacity: 43200 Charge indicator: No Number of ports: 1 port Quick charge: No Voltage: 1.5