Hello,
I have connected a [18650 battery WITHOUT powering the [adjustable LiPo charger (14380) with the selector @500mA and to my surprise I smell something.
I tried to disconnected the battery (I was not too fast, maybe 30 seconds) and I think the resistors where hot.
Can I hook on this charger big capacity batteries to charge? The capacity of battery was 3400mAh
Now the RED led stays open when powerd via USB, but it does not charge.
I made something wrong? I have to power the device and THEN hook the battery? Thank you.](https://www.sparkfun.com/products/14380)](KeepPower 3400mAh li ion protected 18650 battery NCR18650B)