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A project log for Solar Power Bank

Power bank charged via solar uses old batteries

csavageC.Savage 04/05/2017 at 00:370 Comments

First IC on 2nd board went poof. :( Thought I reflowed correctly and checked for shorts. Nope, nothing. Unless pins are shorted on the IC itself, Im getting full 5V on the Vbattery terminal. I may try another IC and I have one more board left.

If it comes down to it and I cant successfully solder a QFN I will have to redesign the board with another IC and add in the load sharing option. There still is the issue of soldering the boost board which is also a QFN package. That doesnt have as many pins so it should be easier..I hope.

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