I am currently repackaging my nvna and would like to include a (much) bigger battery.
What is the biggest battery capacity (Amp-Hours) I could use with the IP5303 charging circuit? Looks to me like there is no limit since the IP5303 will limit the charging current so the initial constant current phase of charging will simply take longer.
Why does the 450mAh battery supplied with the device include a built in circuit for over drain protection etc? The IP5303 already has "Input over-voltage, over-current, battery over-charge, over-drain, over-current protection" built in.
I'm thinking a fat cell phone Lithium Ion battery should be fine as reported by Larry Rothman here...
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(I was at a flea market a couple of months ago and there was a seller who had a lot of new cylindrical LiIon cells about 3Ah as I recall. They were very cheap, but I did not have a nvna then. I wish now that I had bought a few.)
