- Mon Aug 23, 2010 12:56 am
#107982
I've build a small project and have been powering it with a regulated USB rechargable, lithum ion battery pack:
https://www.shopfsp.com/ion-universal-m ... p/549.html
Sadly, part of my device has been reseting it self periodically and I believe I've traced the problem to the battery. If I supply 5V with a regulated plug in power supply, I have no problems (and also worked well with the sparkfun 5V VPack). I have very little hardware experience, does ripple or other problem with the 5V supply sound like a reasonable cause for this problem? Any suggestions for fixing it with the FSP battery?
Or what would sparkfun forum readers suggest as an alternative supply? My device draws about 150ma and I need about 4 hours operating time. I've looked at the NiMH 2-AA battery packs with VPack to get to 5V--but couldn't find a pre-built NiMH AA charging circuit that will fit in my very small case and don't have time to build sufficient quantity of custom charging circuits. I would prefer to charge in the device.
Also considering the LiPoly charger with my existing battery out of the FSP pack. Again, concerned about fitting the LiPoly in the case.
Any plus/minuses of these two options or other recommendations appreciated!
https://www.shopfsp.com/ion-universal-m ... p/549.html
Sadly, part of my device has been reseting it self periodically and I believe I've traced the problem to the battery. If I supply 5V with a regulated plug in power supply, I have no problems (and also worked well with the sparkfun 5V VPack). I have very little hardware experience, does ripple or other problem with the 5V supply sound like a reasonable cause for this problem? Any suggestions for fixing it with the FSP battery?
Or what would sparkfun forum readers suggest as an alternative supply? My device draws about 150ma and I need about 4 hours operating time. I've looked at the NiMH 2-AA battery packs with VPack to get to 5V--but couldn't find a pre-built NiMH AA charging circuit that will fit in my very small case and don't have time to build sufficient quantity of custom charging circuits. I would prefer to charge in the device.
Also considering the LiPoly charger with my existing battery out of the FSP pack. Again, concerned about fitting the LiPoly in the case.
Any plus/minuses of these two options or other recommendations appreciated!