29 Nov '15, 3am

Keeping the LiPo Smoke Where It Belongs

Keeping the LiPo Smoke Where It Belongs

Nothing brings joy to a hacker’s heart like taking a cheap gizmo and making it useful. Over at Hackaday.io [AndyHull] popped open some cheap LiPo battery power packs to see if he could power a Canon Powershot camera. The entire shebang would be left in the wilderness for photography so keeping it inexpensive was a big goal since it might be destroyed or lost. The power packs [Andy] looked at have a TP4221 controlling the charge cycle for up to four 18650 LiPo cells connected in parallel. The controller also boosts the voltage to 5 volts for one or two USB ports while providing automatic shutdown if the LiPo cell voltage drops below 3.2v. Below that voltage the cells can be damaged and might possibly cause a fire. The packs [Andy] used also had a torch output to drive an LED almost directly from the cells. That output is a nominally 3.8 V at 100 mA which is just what he nee...

Full article: http://hackaday.com/2015/11/28/keeping-the-lipo-smoke-whe...

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