5pcs Blue LM3914 Battery Capacity indicator Module LED Power Level Tester Display Board
$23.36
Shipping:Standard Shipping about 10-25 business days
Secure Payment:Paypal,VISA,MasterCard
Features
– This is a DIY kits,need buyer to assemble it.
– Power display is to take some voltage, perform simulations show the percentage of segments, such as 3.7V lithium battery, take the lower voltage 3V, the upper limit of 4.2V, 4.2-3 = 1.2V, the voltage difference between the lower limit of 1.2V, is the battery Analog power up
– LM3914 can accurately detect an analog voltage, and 10 LED display, display dot mode LED is lit 10 one, or in a stripe pattern individually lit LED
– Display Description:Displays the battery voltage between the lower limit of 10 files showed that representatives of each of the lights 10% charge displays, on behalf of 10 lights display charge 0% -100% range; you can also change the single light display, is displayed only a light, more power, single-light power 4mA, all bright 42mA.
– Suitable for lithium batteries, lead-acid batteries and other power batteries need to be displayed
– Power adjustable display range for the battery discharge curve of a scientific setting, direct support:single lithium 1S (4.2V) ~ 4S (16.8V), lead acid 6V ~ 12V, NiMH 3.6V ~ 18V, nickel-cadmium batteries 3.6V ~ 18V
Parameter
Power:bar display full brightness 42ma, single light shows 4ma
Measuring range:the battery inside the common 2.4-20v
Color:blue
Display:Multi-light bar display or a single light dot display
pcb board size:45 x 14 mm
Display Mode A / P:full brightness linear / single lamp lattice mode switch, the default is a linear model, the board set aside a switch pad, even with soldering pads can be turned into full light linear mode, no welding is the point like single light display
A variety of high and low voltage battery display range adjustment
1. Lithium battery
After the completion of a single lithium battery discharge voltage is 3V, when fully charged 4.2V;
1S correspond to 3V (first light) to 4.2V (tenth lights);
2S corresponds to 6V (first light) to 8.4V (tenth lights);
3S correspond to 9V (first light) to 12.6V (tenth lights);
4S correspond to 12V (first light) to 16.8V (tenth lights);
Other series voltage and so on.
2. Lead Acid Batteries
6V or 12V lead-acid battery is generally
6V corresponds to 4.8V (first red light) to 6.75V (tenth lights);
12V corresponds to 9.6V (first red light) to 13.5V (tenth lights);
The module according to the above standard battery discharge range design, can accurately reflect the battery, so that users can readily observe the status of the battery.
Adjustment methods
Equipment needed:an adjustable power supply, precision accuracy of the decisions of the panel display. Watches word screwdriver.
Case in single 3.7V lithium, 3V is less low-end power, 4.2V for the full power of high-end.
1. the adjustable power supply voltage to the desired voltage display high 4.2v, connect this board, this time there are two results:one is not bright, one is all bright or light a few. This time slow adjustment plate 503 (50k) potentiometer until the LED strip just lit up the whole. Several light does not shine or counterclockwise to adjust, when full light clockwise.
2. the adjustable power supply voltage to the low end of the desired 3V. Adjustment board 502 (5K) potentiometer to just light a LED, does not light clockwise adjustment, several or all bright light counterclockwise.
3. patiently repeating the first step two. Usually 2 times to adjust to the desired display range.
Note
To adjust their voltage, according to the method of adjusting the order, to emphasize high-end, then adjust the low end.Red then positive, then negative black, must not be reversed, this module is the maximum limit voltage DC 20V, please use anti-static welding or soldering station pull electric heat welding.
Package Included
5 x LM3914 Battery Capacity Tester Display Board
Weight | 0.04 kg |
---|
Customers Also Viewed
Geekwrom HD 3.5 inch TFT Display Shield 800×480 for Raspberry Pi 3B 2B + Acrylic Matching Case Kit
$121.30Raspberry Pi & Orange PiAdd to cartGeekwrom HD 3.5 Inch TFT Display Shield 800×480 For Raspberry Pi 3B 2B + Acrylic Matching Case KitHD 3.5 Inch TFT Display Shield 800×480 For Raspberry Pi 3B 2BFeatures– Demensions:85mm*56.5mm;– Resolution:800 x 480, 3.5 inch;– 267ppi High PPI display screen;– 11ms High Response Time(more than 60 fps);– 160° Wide Viewing Angle;– 900:1 High Contrast Ratio;– …
intelligent Screen Solar Pure Sine Wave Power inverter 1200W-6000W DC To AC 110V 120V Converter
$121.49InvertersAdd to cartWatt 1200W Voltage 12V Type Single digital display / Watt 2200W Voltage 12V Type Single digital display / Watt 3000W Voltage 12V Type Single digital display / Watt 3000W Voltage 24V Type Single digital display / Watt 3000W Voltage 48V Type Single digital displ
500W Aquarium Submersible Stainless Steel Heating Rod Adjustable Heater
$48.59Solar CollectorsAdd to cartDescriptionMaterial:Stainless SteelColor:SilverPlug:US PlugVoltage:220-240V 50HzWattage:500WTemperature range:16-32°CCable Length:120cm/47.24inch(appr.)Heating Rod Length:41cm/16.14inch(appr.)FeaturesMade of stainless steel material, anti-rust, useful and durable.Double insulation & waterproof.Keep the water temperature steady.Suitable for aquarium:500L (for reference only).Simple adjustment and easy to read temperature indicator.Easy to install with 2 strong suckers (mounting distance of 2 suckers is about 9.5cm).Adjustment knob allows you to adjust the …
500W Aquarium Submersible Stainless Steel Heating Rod Adjustable HeaterRead More
5pcs JoyStick Module Shield 2.54mm 5 pin Biaxial Buttons Rocker for PS2 Joystick Game Controller Sensor
$14.30Other Module BoardAdd to cartFeaturejoystick joysticks standard interface module electronic building blocks and 2.54mm pin interface leads.Phillips is a two-way rocker 10K resistor, with the joystick in a different direction, tap the resistance vary. This module uses a 5V supply, the original state X, Y readout voltage of 2.5V or so, when pressed with the direction of the arrow, …
4Pcs Geekcreit Ultrasonic Module HC-SR04 Distance Measuring Ranging Transducers Sensor DC 5V 2-450cm
$9.83Sensor & Detector ModuleAdd to cartDescriptionWorking Voltage:5V(DC)Static Current:Less than 2mA.Output Signal:Electric frequency signal, high level 5V, low level 0V.Sensor Angle:Not more than 15 degrees.Detection Distance:2cm-450cm.High Precision:Up to 0.3cmInput Trigger Signal:10us TTL impulseSignal:output TTL PWL signalMode of connectionVCCtrig(T)ech0(R)GNDUse MethodSupply module with 5V, the output will be 5V while obstacle in range, or 0V if not.The out pin of this module is …
1MHz-700MHZ 3.2W HF VHF UHF FM Transmitter RF Power Amplifier for Ham Radio
$50.29RF amplifierAdd to cartApplicationBroadband RF power amplifier for all types of wireless applications, FM shortwave radios remote control toys, digital radio, etc., enter 1 milliwatt (0DBM) maximum output of 3 watts, 15V voltage supply, broadband work 1MHZ to 700MHZ can be work. As a result of well-designed, low end that can reach 35DBM (3W), at 500M, the output …
1MHz-700MHZ 3.2W HF VHF UHF FM Transmitter RF Power Amplifier for Ham RadioRead More
Reviews
There are no reviews yet.