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Das inoffizielle Android-System-Handbuch (Professional Series)Das inoffizielle Android-System-Handbuch (Professional Series)
Buy at Amazon for €2.44
Tablet, Android 14 Tablet 11 Inch, 16 (4+12) GB RAM 128GB ROM 1TB TF Expandable, Widevide L1, Octa-Core Processor, 1280 x 800 IPS HD Touchscreen 6800 mAh Battery WiFi 6 BT 5.3 Dual 5MP + 8MP CameraTablet, Android 14 Tablet 11 Inch, 16 (4+12) GB RAM 128GB ROM 1TB TF Expandable, Widevide L1, Octa-Core Processor, 1280 x 800 IPS HD Touchscreen 6800 mAh Battery WiFi 6 BT 5.3 Dual 5MP + 8MP Camera
Buy at Amazon for €89.99
Magnetic Wireless Power Bank, 26800 mAh Fast Portable Charger, USB C in & Out Phone Battery Pack for iPhone 16/15/4/13/12 Series and Other Android Mobile Phones (Metallic Grey)Magnetic Wireless Power Bank, 26800 mAh Fast Portable Charger, USB C in & Out Phone Battery Pack for iPhone 16/15/4/13/12 Series and Other Android Mobile Phones (Metallic Grey)
Buy at Amazon for €30.59
Power Bank, 22,5W PD3.0 & QC4.0 Schnellladung Powerbank, 10000 mAh mit USB-C Eingang & Ausgang Externer Akku, Tragbares Ladegerät LED-Anzeige, Externe Handyakkus für iPhone 16 15 14 13 Android MehrPower Bank, 22,5W PD3.0 & QC4.0 Schnellladung Powerbank, 10000 mAh mit USB-C Eingang & Ausgang Externer Akku, Tragbares Ladegerät LED-Anzeige, Externe Handyakkus für iPhone 16 15 14 13 Android Mehr
Buy at Amazon for €16.99
INIU Power Bank, 20,000 mAh, Fast Charging, USB-C Input & Output, 22.5 W External Mobile Phone Batteries, PD 3.0 QC 4.0, Small, Strong, for iPhone 15/14/13/12 Pro, Samsung Galaxy S23, etc.INIU Power Bank, 20,000 mAh, Fast Charging, USB-C Input & Output, 22.5 W External Mobile Phone Batteries, PD 3.0 QC 4.0, Small, Strong, for iPhone 15/14/13/12 Pro, Samsung Galaxy S23, etc.
Buy at Amazon for €24.85
NOBIS Power Bank, Powerbank 20000 mAh, 45 W External Mobile Phone Batteries, Quick Charging, External Battery with C to C Cable, Portable Charger with Digital Display for Phone, Android, Laptop, etc.NOBIS Power Bank, Powerbank 20000 mAh, 45 W External Mobile Phone Batteries, Quick Charging, External Battery with C to C Cable, Portable Charger with Digital Display for Phone, Android, Laptop, etc.
Buy at Amazon for €31.99
As of 2025-06-24 04:11
prices & availability might be subject to change.
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Battery Helpers

Battery Calibration

2025-06-12

Probably one of the most persistent Battery Myths: the battery needs to be calibrated every now and then! Rather nonsense (see linked article). You don't need an app to calibrate your device's battery. That rather happens as a side-effect: that is, always when your battery ran low until the evening, and you fully charged it in one uninterrupted run (over night) – so those apps are mostly „snake oil“ to obtain ad revenue (see: What’s it all about those modules apps contain?). But for those who insist, there are some calibration apps available – which all require root (mostly to remove the batterystats.bin which holds the "juice consumed by app" data):

Identify Battery Consumers

2025-06-12

Though Android comes with a built-in tool to show battery usage and consumers, this is often mis-interpreted and not even complete. It gives you raw indicators, true – and if there's an app nibbling at your battery all day long permanently with „greater hunger“, it will certainly show up here. For a deeper analysis, however, one often needs tools revealing more details:

Other Battery Helpers

2025-06-12

Further Readings:

2025-06-23