I plan to use a 6V Voltaic solar panel to keep my electron battery charged.
But I am a bit confused about the possible options and the advantages / disadvantages of each.
Connect the battery to USB Battery connection and the solar panel directly to the USB port.
i.e. Use the built in charger of the electron
Use a separate USB / DC / Solar Lithium Ion/Polymer charger - (e.g. from Adafruit PRODUCT ID: 390).
Connect using LiPo/Vin pins.With without capacitor?
Any guidance would be welcome