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[Update] Smart Battery Monitor v1.6

There is a new version of the Smart Battery Monitor available. It is only a minor update and adds one additional requested feature.

The app already keeps track of the time when the charger was plugged on or off. Now, it is possible to show either the elapsed time or the exact point in time when the device was taken of charge or put on.


Testing SBM Widget on Gingerbread

Some people told me that the SBM Battery Widget is not working on Gingerbread (Android 2.3). Unfortunately, I don’t have access to devices running Gingerbread. So, the only way to test the widget on Android 2.3 is to find some people who have such a mobile phone and want to try the app.

If you are using Gingerbread and you are interested on a free copy of the SBM Battery Widget, please write me an email! I will send you a weblink where you can download it. In return I would really appreciate if you could tell me if the app is working or not!

Call for custom theme designs

Do you want your own battery status icon in the notification bar and/or on your home screen?? Right now, I offer you the unique chance to send me your images and I will build a theme package for the Smart Battery Monitor app and the SBM Battery Widget! All the images and icons you design will be used only for your theme. I don’t use them for other things without your consent.

Image specifications:

Android supports three different display classes – low density (LDPI), medium density (MDPI) and high density (HDPI) screens. These classes are used to scale the images to look almost equal on all three density classes. The medium density is the reference screen size. On high density screens (e.g. Samsung Galaxy S) your images are upscaled with the factor of 1.5. For low density screens (e.g. Sony Ericsson X10 mini) the images are downsized with a factor of 0.75. For example an image with 48px x 48px on an MDPI screen has 72px x 72px on an HDPI screen and 36px x 36px on a LDPI screen. The scaling could blur the images – mainly small images are concerned. So, it could be better to draw and save the images for all three resolutions. More details about the screen handling of Android can be found in the Android DevGuide.

  1. Large image used for the Smart Battery Monitor main screen and the home screen icon:
    • Width should not exceed 300px (MDPI)
    • Height is basically not limit
  2. Notification bar icon (should be designed for all three screens):
    • 25px width (19px and 38px)
    • 25px height (19px and 38px)
    • If you want to change the icon for different battery levels you have to provide several images (characters have to be part of the image).
  3. Theme icon used for the theme chooser (should be designed for all three screens):
    • 48px width (36px and 72px)
    • 48px height (36px and 72px)

If you are interested and you have an idea for your own personal theme, please contact me by email. Then, we can discuss the details!

Smart Battery Monitor – YouTube Video

Today, I got an email from Japan that they have made a video from my Smart Battery Monitor app. They put it on their website ( and on YouTube. So, have a look at and enjoy it.

SBM Battery Widget – the home screen widget

SBM Widget

Today, I want to introduce the new SBM Widget. It is the desktop/home screen widget for the Smart Battery Monitor. To use the SBM Widget you need to have at least the free Smart Battery Monitor app because the Smart Battery Monitor provides the theme for the SBM Widget. This brings me to one of the greatest features of SBM Widget: It is customizable with the already available Smart Battery Monitor themes. So, if you already have one of them you can select it as widget for the home screen. You can select the widget in two different sizes: (1) 2×1 means that two columns and one row is used (perfect size for the “Default” theme and the “TextTheme”); (2) 2×2 means that two columns and two rows are used for larger themes like the “AndroidTheme” and the “TachoTheme”.

How to add the SBM widget to the home screen:

  1. Tap long on your home screen and choose “Add widget” from the upcoming menu
  2. Select the “SBM Widget (2×1)” or “SBM Widget (2×2)”
  3. Select the text position and the app which should be launched when you tap on the widget
  4. Choose one of the installed themes!
  5. That’s it! There is no step 5.

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SBM TextTheme

I have almost forgotten to announce the new SBM TextTheme. The theme shows a simple text-only icon in the statusbar and a clear looking battery symbol in the main application. Have a look at the images below.

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Smart Battery Monitor – Release 1.4

A new update for the Smart Battery Monitor app has been released the last days. I fixed some minor bugs and also added new features. Release 1.3 already included the feature to show the time since the phone has been unplugged from the battery charger But this feature was sometimes not that stable because e.g. if you switched of your phone it wasn’t possible to display the elapsed time.

Now, the event time (plug in charger, unplug charger) is written to a small database file. So, it is also possible to retrieve the right time duration if the phone has been switched off and on. Additionally, the app shows the charge time.

Furthermore, I implemented some things behind the scenes to support future extensions. Currently, I’m planning to make a power aware desktop widget and a graphical visualization of the battery charging and discharging.

– [FEATURE] Elapsed time since last charge (if discharging)
– [FEATURE] Elapsed time since phone has been plugged in (if charging)
– [BUGFIX] Scaling of images in main activity

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