As I was waiting for this to arrive. I was researching wich battery it had so I could order a new one. It arrived with the green 8.4 wirh the 9v connector. Texted my buddy and he said that it's a 5v board. So I fixed up a super capacitor. I may solder the cap directly to the wires so I'll have 2 connectors for something else
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You do realize that the charging circuit is going to put around 10 VDC on that capacitor, right? I can't tell what you have with all that sticky electrical tape on it, but it looks like one 5V supercap, that's going to croak within minutes!
Here's what I put into supercaps for the 5V board. The two caps are in series giving me a 10V rating.
My mind was thinking a 5v board 5v cap.
@Ty High posted:My mind was thinking a 5v board 5v cap.
Not quite that simple. 
In all fairness I am trying to learn. The electricians at work avoid me.lol. YouTube has way too many different explanations.
3V and 5V mean what the processor voltage is. The battery circuit is different. 5V boards use 8.4V battery and a battery circuit that drops it down to 5V. The 3V uses a 2.4V battery and a circuit that boost it to 5V. G
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