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I've been told that different charging sources charge my phone at different rates, and have been told that some car chargers act at a normal USB rate instead of a rate closer to an AC outlet.

When I plug into my car charger, is there a way for me to see at what rate my battery is recharging? My phone is an HTC Evo.

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Related: How can profile (log the charging and discharging current for some time period) my battery? (Disclaimer: includes my answer there.) – Firelord Oct 6 '15 at 20:45

Battery Indicator Pro will tell you or you can go into Settings -> About -> Battery and look there.

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The System Panel app has a nice historical chart of battery usage so you can see how quickly it charges as well as how long it takes to drain.

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If you're looking for the actual current draw of electricity coming in to your device, the app Ampere will display this. Note that it may require some tweaking for certain devices.

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CurrentWidget does the trick for me.

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Which one? There's lots of battery widgets. – Al E. Nov 13 '10 at 14:48
the one called "currentwidget" did the trick for me. – Dan Nov 18 '10 at 2:10
Haha, you should probably edit to clarify as "The app "Current Widget" in the market..." – kcoppock Nov 19 '10 at 18:12

You can check the amount of current(in mA) passing to your device via some applications like:

These apps are available for free on Google play store. They will tell you with what rate is your phone charging.

For example:-

If they show less than 500 mA then the device is charging slowly and may take a lot of time to be charged. But if it shows more than 1200 mA then that's good. For my device I get 1600mA.

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