from Xing at NuElectronics

Dear Nerds,

I am sending two battery packs (including charge circuit & DC-DC step up to 5.5V) to you today, one has 650mAh 3.7V capacity, the other one has 400mAh, 3.7V capacity. These li-poly batteries are the ones I bought for prototype. For my project in production, I will use 1500mAh 3.7V li-poly battery, which is a little bit bigger - 60mm x 50mm x 5mm .

You can plug in USB mini cable to the USB socket to charge the battery from the PC (the LED will turn on). The data lines are available on the USB socket, you need to be a bit careful of soldering wires onto it. For power up your PIC/eeprom, I'd think you better use a proper LDO regulator - like the AMS1117 - step down 5V to 3V3; because the battery outputs anywhere between 3.6V to 4.2V directly.

Regards,
Xing

Any day now, we should have a conclusion to the debate "lipos - good, bad or ugly?"