Home > DIY Module > Function DIY > LM3914 Green LED Bar Display Module 10 Segments Battery Power Indicator Battery Capacity Indicating Tester DIY Kits

LM3914 Green LED Bar Display Module 10 Segments Battery Power Indicator Battery Capacity Indicating Tester DIY Kits

5 1
$3.99 $2.79
Contact us for wholesale price
Time Remaining:
- OR - - OR - Add to Wish List

Cheaper Buy Together

$7.58-12%Bundled Price:$6.67

Product Introduction:
1>. Power Consumption: all lamps on 42mA; single lamp on 4mA
2>. Measurement Range: universal 2.4-20V batteries
3>. Color: Green
4>. Display Way: multi-lamp bar display or single lamp dot display
5>. PCB Size: 45*14mm
6>. Adaptive for lithium batteries, lead acid batteries and other batteries which need display electricitiy quantity.
7>. Power display adjustable; support single lithium battery 1S-4S (4.2V-16.8V); lead acid battery 6-12V; Ni-MH 3.6-18V; nickel-cadmuum battery 3.6-18V.
8>. Display Way Introduction: display battery upper/lower limit voltage, and it can be divided into 10 gears; every lamp on represents display 10%; 10 lamps on represents display 0-100%; and it can be also changed into single lamp display,that means only one lamp is on.

Lithium Battery:
After single lithium battery discharges, its voltage is 3V, when fully charged, it is 4.2 V
1S-->3V (the first lamp) to 4.2V (the tenth lamp)
2S-->6V (the first lamp) to 8.4V (the tenth lamp)
3S-->9V (the first lamp) to 12.6V (the tenth lamp)
4S-->12V (the first lamp) to 16.8V (the tenth lamp)
other parallel voltage so on

Lead Acid Battery:
Lead acid battery usually is 6V or 12V battery
6V--> 4.8V (the first lamp) to 6.75V (the tenth lamp)
12V--> 9.6V (the first lamp) to 13.5V (the tenth lamp)

Adjustment Way:
Necessary Equipment: Adjustable stabilivolt power; Screwdriver
Take single lithium battery 3.7V as an example, 3V is undervoltage low port; 4.2V is full power high port
1>. Adjust adjustable power to voltage high port 4.2V, then connect with this board ; and there may be
  2 results: one result is not on, another result is all on or several on; then adjust 503 potentiometer slowly until LED is all on; if it is not on or several on, please counter clockwise adjust; if all on, please clockwise adjust.
2>. Adjust adjustable power to voltage low port 3V, then adjust 502 potentiometer until there is a LED on; if it is not on, please adjust it clockwise; if there is all on or several on, please adjust it counter clockwise.

If there is no high-precise adjustable power, then charge the battery to full power that is high port voltage; when the battery discharges completely that is low port voltage; connect with the board and adjust it again.

1>. Please operate according to above instructions;first adjust high port then adjust low port.
2>. Red wire connects with positive, black wire connects with negative. Please don't connect it reversely; the maximum limit voltage is 20V, please use anti-static bonding pad.

Finished Product Picture:

Tested by ICStation's Outstanding Partner learnelectronics:

Learn More Details in the Video:

(The language in the video is English)



Rating: [5] 5 of 5 Stars! Date Added: 2017-07-10 21:17:42
Fits the description completely. Collected-everything works. Thank you seller.

First we should say that ICStation doesn't accept any form of pay on delivery.Items used to be shipped after receiving the order info and payment.

1) Paypal Payment

PayPal is a secure and trusted payment processing service that allows you to shop online. PayPal can be used at icstation.com to purchase items by Credit Card (Visa, MasterCard, Discover, and American Express), Debit Card , or E-check (i.e. using your regular Bank Account). 

We are PayPal Verified 


2) West Union


We know that some of you do not have the Paypal account. 

But please take it easy. You can use West Union payment method.
Learn more at West Union at www.westernunion.com.
For the receiver info, please contact us at orders@icstation-team.com.
3) Bank Transfer / Wire Transfer / T/T

Bank Transfer / Wire Transfer / T/T payment methods are accepted for orders which the total price is up to US$500. The bank will charge about US$60 for the transfer fee if we do the payment in these ways. 

For other payment method, please contact us at orders@icstation-team.com for more details.

1. Yanwen / YunExpress / 4PX / China Post Airmail Service

(1) Due to the high risk of package lost recently, we have to stop using the free shipping way these days. Hope for your kind understanding! And the $5 is for tracking number and delivery insurance ^0^ Enjoy order from us. 

Free Shipping for all orders over $20 ^0^ (with free tracking number and delivery insurance fee)

(2) Shipping time 
Shipping time is 7-20 business days to most of countries; please view below table for exactly shipping time to your location. 

7-15 working days to: Most of Asia countries
10-16 working days to: USA , Canada , Australia , UK , Most of Europe countries
13-20 working days to: Germany , Russia
18-25 working days to: France , Italy , Spain , South Africa
20-45 working days to: Brazil , Most of South America countries

2. DHL/FedEx Express

(1)Shipping Fee: Free for the order which meet the following requirements
Total price of the order >= 200USD or Total weight of the order >= 2.2KG

When the order meets to one of the above requirement, it will be shipped for FREE via EMS/DHL/UPS Express to below country. 
Asia: Japan , South Korea , Mongolia . Malaysia , Singapore , Thailand , Vietnam , Cambodia , Indonesia , Philippines 
Oceania: Australia , New Zealand , Papua New Guinea 
Europe& America: Belgium, Britain, Denmark, Finland, Greece, Ireland, Italy, Luxembourg, Malta, Norway, Portugal, Switzerland, Germany, Sweden, France, Spain, USA, Austria, Canada
Note: Shipping Fee to other countries, please contact orders@icstation-team.com

(2) Shipping Time & Delivery Time

Shipping time: 1-3 days
Delivery time: 5-10 working days (about 1-2 weeks) to most of countries. 

Because the package would be returned to the sender if it had not been signed by the receiver , please pay attention to the arriving time of the package. 


1) APO and PO Box Addresses

We strongly recommend that you provide a physical address for order delivery. 
Because that DHL and FedEx are unable to deliver items to APO or PO BOX addresses. 
2) Contact Phone Number
Receivers' contact phone number is required by express shipping agency for the package delivery. Please provide us with your latest phone number.

3. Note
1) Delivery Time of mixed orders with items in different Shipping Status should be calculated using the longest estimate times listed. 
2) Chinese Holiday Reminder: During annual Chinese holidays, services from certain suppliers and carriers may be affected, and delivery for orders placed around the following times may be delayed by 3 - 7 days: Chinese New Year; Chinese National Day,etc. 
3) Once your order is shipped, you will receive an email notification from icstation.com
4) Track the order which with tracking number via below links:

YunExpress / Yanwen / China Post: www.17track.net/en
FedEx: www.fedex.com


Customers who bought this product also purchased

500pcs 50 Values Metal Film Resistor Kits 1/2W 1% 1.2ohm 4720ohm 10K 510K 1M Component Kit
TPA3116D2 50W+50W HIFI Bluetooth-compatible Audio Stereo Module BLE5.0 USB/AUX Digital Amplifier Module
200pcs 15 Values Electrolytic Capacitor Kits 0.1uF/0.22uF/0.47uF/1uF/2.2uF/3.3uF/4.7uF/10uF/22uF/33uF/47uF/100uF/220uF 10V/16V/25V/50V
WIFI Network Internet of Things IOT Development Board Module Based ESP8266 Module for Smart Home
DIY Kit Bluetooth Speaker with LED Flashing Light, Home Stero Sound Amplifier Kits for Learning Electronic Soldering
AC-DC Converter AC 110V 220V to 1.25V-31V/5A 18V-33V/6A 180W Dual Power Supply Module Adjustable Buck Step Down Module
10A Lithium Battery Charger Controller Protection Board DC 6-60V LCD Display
Lithium Battery Charge Controller Battery Protection Board XY-CD60L 6V-60V LCD Display Battery Charging Control Board
3 Series Lithium Battery Charger MPPT Controller CN3722 18V Solar Panel
AC/DC 12V Liquid Level Controller Sensor Module Water Level Detection Sensor
Battery Charge Controller OverDischarge Undervoltage Protection Module Automatic Power Charger Module for 12V Battery
5pcs Micro USB Mobile Power Lamp 16pcs LEDs Board Emergency Light SMD 5730 Super Bright White Lamp Light Module

Your Recent History

LM3914 Green LED Bar Display Module 10 Segments Battery Power Indicator Battery Capacity Indicating Tester DIY Kits