(I think this count as gear)
Something I made at home, which converts the lipo to 5V output, and allows it to charge many consumer electronics.
The output voltage is abjustable, which also allows it to charge electronics that need other voltages. The build in voltmeter allows reading the output while abjusting.
Charging my kindle.
Charging my kindle with the build in voltmeter on.
Charging my phone. (the orange light means charging)
Charging my cheap Android tablet. (Please don't ask why the screen is cracked.)
Pros:
Highly "modular" compares to most "mobile power sources" on the market. When the lipo is dry, simply get another lipo to achieve very high capacity.
Uses ready available airsoft/RC lipo, designed for airsofters.
Small and compact.
Cons:
Still need external lipo alarm, no integrated over-discharge protection due to the size limit. (will be included in next version)
Current version do not support iPhone/iPad/iTouch. (will be included in next version or added as a iPhone/iPad specific extension cable)