For those buying a used (or new for that matter) Kyosho dNaNo portable charger.
I put this video together to explain a quirk they all have. Basically a discharged battery starts easy. An almost fully charged battery won't easily start the charge cycle. My workaround is dropping power to the charger and bringing it back with the lipo already in the charger.
Please see
this youtube video regarding usage quirks of this and all Kyosho dNaNo portable chargers.