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How to build a Standard battery pack for newer Holfuy main boards (above V6.X).

Please follow and do the steps of this guide only, if your Holfuy Standard weather station has a main board with directly soldered batteries (V2.X, V3.X, V4.X, V5.X), and you would replace it to a newer main (V6.X or newer) board which has a battery connector. If you can't do soldering properly please don't do this guide.
Tools required:
  1. Cross/Phillips (+) screwdriver
  2. Mini flat-head (-) screwdriver (maximum 2mm wide head) for the green wire terminal of the main board.
  3. Heat gun
  4. Soldering station, tin (soldering skills required!)
  5. Battery upgrade kit
Steps:
  1. Open the station's enclosure.
  2. Turn off your station.
  3. Disconnect all sensor wires from the screw terminal of the main board.
  4. Take out the main board from the enclosure (4 Philips (+) screws are fixing it at the corners).
    Please take extra care during handling the batteries, if you make a short circuit it can cause serious injuries or fire!
  5. Solder off the tags of batteries from the main board and remove them carefully!
    Please take extra care during handling the batteries, if you make a short circuit it can cause serious injuries or fire!
  6. Solder together the battery cells together paralel next to each other tightly in a row with the soldering strips from the battery upgrade kit.
    Please take extra care during handling the batteries, if you make a short circuit it can cause serious injuries or fire!
  7. Solder the battery connector's wires to the strips between the upper two cells. Negative black, positive red.
    Please take extra care during handling the batteries, if you make a short circuit it can cause serious injuries or fire!
  8. Put the battery pack in the black tube from the battery upgrade kit and shrink it carefully on the batteries with the heat gun.
  9. Place the battery pack in the station's enclosure. And stick the self adhesive tape on its top.
    Please take extra care during handling the batteries, if you make a short circuit it can cause serious injuries or fire!

  10. Stick the foam from the battery upgrade kit with the tape.
  11. Fix the new main board in the enclosure with the four Philips (+) screws at the corners.
    The longest screw fixes the communication module also, and between it and the main board you should place the white plastic 11mm spacer tube.

  12. Connect back all sensor wires to the screw wire terminal in the right order. Pinout in the -manual-
  13. Connect the battery pack with its white connector to the main board.
  14. Turn on your station.
  15. Close the station's enclosure with extra care on the proper sealing.
    Please don't forget to plug in the solar cell's red T-connector into the main board.
  16. IMPORTANT: Please don't mount the wind or any other sensor to the very top of the pole.
    Please follow the other installation guidelines in the -manual-.


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