$3.83 Buy It Now or Best Offer
free,30-Day Returns

Seller Store injoys1
(204) 98.6%,

Location: Shenzhen
Ships to: US,
Item: 315512557117

Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money back or replacement (buyer’s choice)
Unbranded:Unbranded
MPN:Does Not Apply
Type:USB voltmeter

Product Description If you have any questions, please contact customer service first, do not open disputes easily, thank you!Features: 1. Voltage and current measurement: plug 5V charger into the USB male, and plug mobile phone into the female seat to directly read the voltage and current parameters. 2. Measure the battery capacity: use TP4056 and other linear charging circuits to charge the completely dead battery to full through this capacity meter, and the capacity reading is the battery capacity. This method can also measure the mobile phone charging capacity, and even calculate the mobile phone charging efficiency. 3. Measure the output capacity and efficiency of the mobile power supply: first connect the mobile power supply to the mobile power supply, turn on the mobile power supply, press and hold the key until the capacity data is zero, insert the mobile phone for several times until the mobile power supply is powered off automatically. The next time the machine is turned on, the display capacity is the mAH of mobile power output. Note that this mAH is far smaller than the nominal mAH, output mAH * output voltage 5V/battery mAH * battery voltage 3.7V=mobile power efficiency. 4. Data reset: press the reset key for 3 seconds and the screen will display reset. 5. The explosion of rechargeable mobile phones is on the hot search list. Research analysis shows that when the mobile phone is charged, too high voltage or current input for a long time may lead to the explosion of mobile phone batteries. Let this product protect your safety. Specifications: Product name: KWS-V20 Size: 59mm (with USB73mm) * 23mm * 13.5mm Input/output voltage: 3-9V Voltage resolution: 0.01V Input/output current: 0-3A Current resolution: 0.01A Accuracy: ± 1% Line loss: about 0.1 Ω Weight: 20g Package includes: 1 * USB voltmeter Note: 1. Due to manual measurement, please allow an error of 1-3 mm. Please confirm that you dont mind before ordering. 2. Please allow 1-3 g weight error. Please make sure you dont mind before ordering. 3. Due to the difference of light and display in the picture, the picture may not reflect the actual color of the object. Please make sure you dont mind before ordering, thank you! Payment Shipping Contact Us We accept paypal payments and all payments authorized by eBay. 1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. 2.Items will be shipped within 1-2 business day when we received payment. 3.Delivery time depends on destination and other factors We strive for 100% customer satisfaction! Postive Feedback is very important to us. If you have any questions, please feel free to contact us via “Ask seller a question” , we will reply your email within 24 Working hours. Payment We accept paypal payments and all payments authorized by eBay. Shipping 1.We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. 2.Items will be shipped within 1-2 business day when we received payment. 3.Delivery time depends on destination and other factors Contact Us We strive for 100% customer satisfaction! Postive Feedback is very important to us. If you have any questions, please feel free to contact us via “Ask seller a question” , we will reply your email within 24 Working hours. powered by

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