If you are using an OpenBCI board with a headset, easiest is to just order a LiPo cell and charger. Cheap on Adafruit and other sites. See "recommended battery / charger" section,

the ganglion came with an external battery pack not a LiPo... where do you suggest mounting it?

(apologize in advance if there's already a thread on this -- please merge if so)

Since you mention your charger or LiPo cell may be suspect from the reverse polarity hookup -- have you tried a simple test with the default 4 AA alkaline cells? What voltage are you measuring at the

6 volts max. So for example if you had used a LiPo 2S cell (~8 volts) or a 9v alkaline battery, that could potentially have fried components such as the ADS1299. Later 32 bit boards were shipped with

I don't have the current consumption figures handy for all configurations, but when I once measured the 8 bit board, it was 50 milliamps. There is no battery voltage readout, unfortunately. Knowing th

diode was by plugging a 3.5V / 400mAh lipoly battery on the openbci

headset-charged lipo battery

Thanks @wjcroft ! I didn't include onboard charging, because I felt the space, time and components requiered for a safe isolated system wouldn't be worth it. I will use an external LiPo charger and ch

It looks like you have some onboard LiPo battery charging built in as well. Is the component at U11 some type of CANbus isolator? Which PC board fab and CAD program are you using? Will you use a reflo

Regarding ease of recharging the LiPo cell and reducing wear on the housing screw threads & connectors,

http://openbci.com/forum/index.php?p=/discussion/175/run-openbci-on-lipo-battery/p1

The Ultracortex instructions use the single LiPo cell.

This graph is the typical  way the voltage of a 1000mAh Lipo, decreases with the capacity used. At 80% (800mAh used) any lipo shows this "cutoff" as you say.

A 2S lipo is good only if you want to heat yourself.

It'd seem that 3.7V is TOO restrictive with LiPo discharging, wires, temperature, etc.

3.7 Volts lipo should work...  

For the 32b board, can I work directly off the 3.7V LiPo?Thx,

I also used paper tags to label each electrode. My only piece of feedback would be to modify/enhance the charging method for the LiPoly battery from Adafruit. I'm a little worried that the plastic wil

This is my Ultracortex Mark 2. It works perfectly. I used a USB Lilon/LiPoly charger - v1.2 and Lithium Ion Polymer Battery - 3.7v 500mAh. Those are very convenient.