Usefullness of a mobile device diminishes greatly when its batteries cross the River Styx; passing from the land of the living into the realm of lost socks.
Add a battery case?
Sounds like a great idea, but you might have to give-up wireless charging (if your phone has it). Charging receivers need to be coaxially aligned and in close proximity to a power transmitter – a battery case will rain on your phones charging parade.
Here’s an idea, why don’t we integrate a universal Qi wireless receiver into the battery case.
Now we’re talking!
If you don’t want to void your warranty or risk letting the magic smoke of out of your phone or battery case… I would recommend using the Qi charging stickers that terminate in Micro / Mini USB connectors.
For this guide, we will use the Qi Universal Charging Module and integrate it into a Nexus 5 Limefuel battery case.
Modifying devices with high-capacity batteries can be very dangerous; please be careful!
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.