[T-Mobile myTouch 4G Slide] MT4GS:
Yeah, on a second thought I don't think it is good idea to use LEDs for testing. I already like my MT4GS (it's a keeper despite little bit of lacking in RAM size) and I would cry if break it ;)

I'm on same Chrome and yesterday the buttons were here... maybe google again updated it silently and some settings went back to defaults again, I hate this "cat and mouse" game :(

Yes, the single-cell Li-Pos are the same as Li-Ions (just higher capacity) in the terms of charging, they won't do any harm.

The 2-cell batteries are the ones that I would be worry (i.e. I am almost certain the "3800 mAh $20 battery" is just 2x1900mAh single-cell batteries put together in one larger case, and charging it in the phone may burn something - port or diode - because it will requrie twice the Amperes than single cell)

Overclocking moderately should be OK... once I root my phone and flash with ICS I will o/c my phone. There was great Windows Mobile utility (forgot the name) for X-Scale ARM CPUs in the days of iPAQs, I always had it overclocked my 312MHz in the range of 64-384MHz and it was fine for as long as I had it (more than a year). But I remember someone burning it at 512MHz or so (obviously it was crazy idea to o/c by 160%)

Great! I love pics. Everyone love pics ;)

Your RC model's battery case may not have breathing holes because it is much larger than phone battery. There is probably additional room/space inside the battery case, because trust me - Li-Po batts ALWAYS EXPAND when charged, and shrink when drained. That's their design and nature, nothing to worry.

edit:

Sweet! Thanks for pics :D

I still have somewhere 3 RC cars me and my sonny used to play with few years ago. They are just toys, but one was very cool - it can flip and do crazy stuff. Other 2 are just trucks.

edit again:

HERE is something to read about Li-Po batts to qualm your worries ;)

and edited once more (for the last time, I promise ;) ):

Advantages and Limitations of Li-Ion (Lithium-Ion) Batteries

Advantages

High energy density — potential for yet higher capacities.

Relatively low self-discharge — self-discharge is less than half that of NiCd and NiMH.

Low Maintenance — no periodic discharge is needed; no memory.

Limitations

Requires protection circuit — protection circuit limits voltage and current. Battery is safe if not provoked.

Subject to aging, even if not in use — storing the battery in a cool place and at 40 percent state-of-charge reduces the aging effect.

Moderate discharge current.

Subject to transportation regulations — shipment of larger quantities of Li-ion batteries may be subject to regulatory control. This restriction does not apply to personal carry-on batteries.

Expensive to manufacture — about 40 percent higher in cost than NiCd. Better manufacturing techniques and replacement of rare metals with lower cost alternatives will likely reduce the price.

Not fully mature — changes in metal and chemical combinations affect battery test results, especially with some quick test methods.

Advantages and Limitations of Li-Po (Li-ion Polymer) Batteries

Advantages

Very low profile — batteries that resemble the profile of a credit card are feasible.

Flexible form factor — manufacturers are not bound by standard cell formats. With high volume, any reasonable size can be produced economically.

Light weight – gelled rather than liquid electrolytes enable simplified packaging, in some cases eliminating the metal shell.

Improved safety — more resistant to overcharge; less chance for electrolyte leakage.

Limitations

Lower energy density and decreased cycle count compared to Li-ion — potential for improvements exist.

Expensive to manufacture — once mass-produced, the Li-ion polymer has the potential for lower cost. Reduced control circuit offsets higher manufacturing costs.