Today I did take apart (once more time) my UNIROSS UCU004.I did take several close-up photographs (Macro lens) from the PCB, for my private collection.
By checking the photographs I did a web search of PCB codes, and I find traces that
Sanyo (Panasonic), this has also use
this OEM factory, at 2010-2011 for the manufacturing of
Sanyo NC-MQN06U.
UNIROSS UCU004 this is product of 2022, even so this OEM he is very familiar with Eneloop chargers, for a decade at least.
By taking apart my UNIROSS UCU004, I did notice that
5V USB mini & USB Type-C 5V input, both not using any pins related to Data.
(There is no special negotiation with the external 5V PSU.)
This information
inspired me so to add an third round barrel connector.
So to be able to use my generic 5V 2A PSU instead.
This pair of white connectors, they were removed from a damaged LED panel.
And today, this
5V DC add-on connection, it is also color coded
