SparkFun Forums

[mg]

I'm thinking about using these lipoly's with the GPS datalogger; but can someone confirm whether I need to step them up (it looks like from the specs that the datalogger requires min 4v). Has only done this and can recommend a straightforward approach? Thanks!

[ohararp]

I was initially happy with SFE's data logger, but decided to add a bunch of features that were not supported. Check out my blog at: http://sdgpsdatalogger.blogspot.com/

Otherwise, you can run the SFE logger off a fully charged lipo. However you will not be getting the full life of the battery since the regulator will probably brown out at around 3.4-3.5 V.

To save you some trouble check out the link below: I just placed an order for these pcb's that I designed that have built in stepup - stepdown converters, a protection circuit module and usb charger. I am intending to help those out who want to start using lipo's safely for microcontroller apps. PM with your e-mail address and I will add you to my contact list to keep you posted on how things are going.

http://www.sparkfun.com/cgi-bin/phpbb/v ... sc&start=0

CAUTION!!! Do not use lipo's such that you discharge them below 2.5V, overcharge beyond 4.2V, puncture or expose the lipo to temperatures >140F.

[ohararp]

5 Boards have arrived...check blog for details.