Benchmark of USB Power Supply
e-usbps

<h1>Benchmark of USB Power Supply</h1>
I bought many USB power supplies, but they don't have rated performance.<br>
So I measured their output voltage and current.<br>
This page is Benchmark result of USB power supplies.<br>
(Because of this site is for Japanese, Japanese sentence are discribed with.)<br>
<h2>USB電源の測定</h2>
今まで数々のUSB電源を購入してきましたが、その多くは表記された性能を満たしていません。<br>
そこで、USB電源の出力電圧・電流を測定してみました。<br>
このページはその測定結果を記したものです。<br>
※海外通販での購入品が多いため、英語での表記をしています。<br>

<hr><p>

<h2>1.Measuring Environment 　測定環境</h2>
<table border="1">
 <tr><td>Primary Power <br>一次電力</td><td>AC 100V 60Hz (AC Adapter)<br>DC 12V (Car Adapter)</td></tr>
 <tr><td>Load <br>負荷</td><td>Original Electric Load (Max 1.1A) <br>自作電子負荷 最大1.1A</td></tr>
 <tr><td>Instrument <br>測定器</td><td>Digital Multi Meter METEX P-16</td></tr>
</table>
<table><tr valign="bottom" align="center">
 <td><img src="/ele/usbps/load.jpg" alt="Load" width="320" height="240"><br>Electric Load 電子負荷</td></td>
 <td><img src="/ele/usbps/p-16.jpg" alt="P-16" width="320" height="240"><br>Digital Multi Meter</td></td>
</table>
<hr><p>

<h2>2.Result 　測定結果</h2>
<b>Color Legend 　色凡例</b>
<table border="1">
 <tr><th>Color 　文字色</th><th>Meaning 　意味</th><th>Voltage 　電圧</th><th>Current 　電流</th></tr>
 <tr><td><font color="blue">Blue 　　 青</font></td><td>Good 　　　良</td><td>+/- 5%</td><td>100% or above (以上)</td></tr>
 <tr><td><font color="green">Green 　 緑</font></td><td>Not good 　可</td><td>+/- 10%</td><td>80 - 99%</td></tr>
 <tr><td><font color="orange">Orange 　橙</font></td><td>Bad 　　 不可</td><td>+/- 20%</td><td>50 - 79%</td></tr>
 <tr><td><font color="red">Red 　　　赤</font></td><td>Worst 　 論外</td><td>Other 上記以外</td><td>Other 上記以外</td></tr>
</table>
<p><b>USB AC Adapter 　USB ACアダプタ</b>
<table border="1">
 <tr><td rowspan="2">Photo<br>写真</td><td rowspan="2">Name<br>商品名</td><td colspan="2">Output Voltage 　出力電圧</td><td colspan="3">Output Current 　出力電流</td></tr>
 <tr><td>Rated 定格</td><td>Open 開放</td><td>Rated 定格</td><td>@ 4.75V<br></td><td>@ 4.50V</td></tr>
 <tr><td><img src="/ele/usbps/tc-e250.jpg" alt="" width="140" height="140"></td><td>HTC AC ADAPTER TC E250<br>(HTC Desire Genuine @EU)<br>JPY \1180<br>D+/D- : Short</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.17V</font></td><td><font size="+2">1A</font></td><td><font size="+2" color="blue">1.1A+</font></td><td><font size="+2" color="blue">1.1A+</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_43028_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.43028~r.47067804" target="_blank">USB/AC Battery Charging <br>Dock Cradle for HTC G7</a><br>USD $12.9<br>D+/D- : Open</td><td><font size="+2">5.2V</font></td><td><font size="+2" color="blue">5.37V</font></td><td><font size="+2">800mA</font></td><td><font size="+2" color="red">364mA</font></td><td><font size="+2" color="red">374mA</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_34633_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.34633~r.47067804" target="_blank">2-Port USB Power Adapter</a><br>USD $3.84<br>D+/D- : Short</td><td><font size="+2">5.0V</font></td><td><font size="+2" color="green">5.27V</font></td><td><font size="+2">1000mA</font></td><td><font size="+2" color="red">328mA</font></td><td><font size="+2" color="red">388mA</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_25372_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.25372~r.47067804" target="_blank">Ultra-Mini 1000mA <br>USB Power Adapter/Charger</a><br>USD $2.76<br>D+/D- : Short</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.18V</font></td><td><font size="+2">1A</font></td><td><font size="+2" color="orange">574mA</font></td><td><font size="+2" color="orange">578mA</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_43487_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.43487~r.47067804" target="_blank">Ultra-Mini 1000mA <br>USB Power Adapter/Charger <br>for iPhone 3G/3GS/4</a><br>USD $3.30<br>D+/D- : Open</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.1V</font><br>(Approx.)</td><td><font size="+2">1000mA</font></td><td><font size="+2" color="red">262mA</font></td><td><font size="+2" color="red">284mA</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_27524_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.27524~r.47067804" target="_blank">1000mA USB Power Adapter/Charger </a><br>USD $2.91<br>D+/D- : Short</td><td><font size="+2">5V</font></td><td><font size="+2" color="green">5.26V</font></td><td><font size="+2">1000mA</font></td><td><font size="+2" color="red">224mA</font></td><td><font size="+2" color="red">246mA</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_26446_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.26446~r.47067804" target="_blank">Ultra-Mini USB Power Adapter/Charger </a><br>USD $2.76<br>D+/D- : Open</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.18V</font></td><td><font size="+2">1000mA</font></td><td><font size="+2" color="red">400mA</font></td><td><font size="+2" color="red">418mA</font></td></tr>
 <tr><td><img src="/ele/usbps/sku_47417_1_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.47417~r.47067804" target="_blank">Designer's Ultra-Mini USB Power Adapter/Charger </a><br>USD $1.90<br>D+/D- : Short</td><td><font size="+2">5V</font></td><td><font size="+2" color="green">5.30V</font></td><td><font size="+2">1000mA</font></td><td><font size="+2" color="red">260mA</font></td><td><font size="+2" color="red">272mA</font></td></tr>
 <tr><td><img src="/ele/usbps/planex_01.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/am.png" alt="amazon" width="16" height="16">Amazon.co.jp<br><a href="http://www.amazon.co.jp/gp/product/B002SW2ZN8?ie=UTF8&tag=product-id-22&linkCode=as2&camp=247&creative=7399&creativeASIN=B002SW2ZN8">Planex 2Port AC Adapter <br>PL-WUCHG01-B</a><img src="http://www.assoc-amazon.jp/e/ir?t=product-id-22&l=as2&o=9&a=B002SW2ZN8" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /><br>JPY \880<br>D+/D- : Short</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.22V</font></td><td><font size="+2">1A</font></td><td><font size="+2" color="blue">1.1A+</font></td><td><font size="+2" color="blue">1.1A+</font></td></tr>
 <tr><td><img src="/ele/usbps/ge-usbac.jpg" alt="" width="140" height="140"></td><td>GENO<br>GE-USBAC<br>JPY \499<br>D+/D- : Open</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.22V</font></td><td><font size="+2">1A</font></td><td><font size="+2" color="green">868mA</font></td><td><font size="+2" color="green">892mA</font></td></tr>
 <tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
</table>

<p><b>USB Battery 　USB バッテリー</b>
<table border="1">
 <tr><td rowspan="2">Photo<br>写真</td><td rowspan="2">Name<br>商品名</td><td colspan="2">Output Voltage 　出力電圧</td><td colspan="3">Output Current 　出力電流</td></tr>
 <tr><td>Rated 定格</td><td>Open 開放</td><td>Rated 定格</td><td>@ 4.75V<br></td><td>@ 4.50V</td></tr>
 <tr><td><img src="/ele/usbps/sku_18883_4_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.18883~r.47067804" target="_blank">Emergency USB Charger</a><br>USD $19.4<br>D+/D- : Open</td><td><font size="+2">5V?</font></td><td><font size="+2" color="green">5.50V</font></td><td><font size="+2">500mA?</font></td><td><font size="+2" color="blue">504mA</font></td><td><font size="+2" color="blue">804mA</font></td></tr>
 <tr><td><img src="/ele/usbps/specchio.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/am.png" alt="amazon" width="16" height="16">Amazon.co.jp<br><a href="http://www.amazon.co.jp/gp/product/B000WN4O7K?ie=UTF8&tag=product-id-22&linkCode=as2&camp=247&creative=7399&creativeASIN=B000WN4O7K">RIX Specchio for FOMA<br>RX-JUK664FWH</a><img src="http://www.assoc-amazon.jp/e/ir?t=product-id-22&l=as2&o=9&a=B000WN4O7K" width="1" height="1" border="0" alt="" style="border:none !important; margin:0px !important;" /><br>Discontinued. 　売切<br>D+/D- : Open</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.00V</font></td><td><font size="+2">0.5A</font></td><td><font size="+2" color="red">160mA</font></td><td><font size="+2" color="orange">300mA</font></td></tr>
 <tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
</table>

<p><b>USB Car Adapter 　USB 車載アダプタ</b>
<table border="1">
 <tr><td rowspan="2">Photo<br>写真</td><td rowspan="2">Name<br>商品名</td><td colspan="2">Output Voltage 　出力電圧</td><td colspan="3">Output Current 　出力電流</td></tr>
 <tr><td>Rated 定格</td><td>Open 開放</td><td>Rated 定格</td><td>@ 4.75V<br></td><td>@ 4.50V</td></tr>
 <tr><td><img src="/ele/usbps/sku_40470_2_small.jpg" alt="" width="140" height="140"></td><td><img src="/ele/usbps/dx.png" alt="DX" width="16" height="16">DealExtreme<br><a href="http://www.dealextreme.com/details.dx/sku.40470~r.47067804" target="_blank">Car Cigarette Powered 1000mA <br>USB Adapter/Charger</a><br>USD $2.59<br>D+/D- : Open</td><td><font size="+2">5V</font></td><td><font size="+2" color="blue">5.10V</font></td><td><font size="+2">1A</font></td><td><font size="+2" color="blue">1.1A+</font></td><td><font size="+2" color="blue">1.1A+</font></td></tr>
 <tr><td></td><td></td><td></td><td></td><td></td><td></td><td></td></tr>
</table>