Features:
<br />100% brand new and high quality!
<br />This is a mini USB meter. It can measure voltage, current, power and capacity.
<br />Power-down storage function: when power off, the accumulated mah will be automatically saved.
<br />Stored mah flashing displayed after boot.
<br />When new mah up to 1 mAh, stored mah will be discussed, and the values will be restarted.
<br />Calculating the capacity and efficiency of mobile phone battery power bank:
<br />Ah Data x voltage output voltage ÷ ÷ battery efficiency = ah phone battery power bank (typically 5 V output voltage, battery voltage is generally based on 3.7 v, typically by 85-90% efficiency)
<br />Over-voltage and under-voltage reminder: when a voltage of more than 5.3 V (less than 4.7 V), the arrow blinks
<br />
<br />Product Specifications:
<br />Mode display: 0.91 '' OLED screen
<br />Voltage measurement range: DC 4-20V
<br />Voltage accuracy: ± (0.3% + 1 word)
<br />Current measurement ranges: DC0.00-3.00A
<br />Current accuracy: ± (0.5% + 2 words)
<br />Power measurement range: 0-30.00 w
<br />Capacity measurement range: 0-99999 mAh
<br />Main color: blue
<br />Size: approx. 57 * 20 * 10mm (l * w * h)
<br />Weight: 9g
<br />
<br />Package includes:
<br />1 x USB power voltage current detector<p> <b><b><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-1-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-2-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-3-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-4-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-5-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-6-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-7-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-8-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-11-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-12-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-13-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-14-large.jpg" noproxy><img src="https://contestimg.wish.com/api/webimage/58f055e8d887980efe40ced2-15-large.jpg></b></b></p>