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  1. J

    power box / off grid office

    Both: I charge some USBdevices via 12V - 5V DC-DC adapters and have connected other things to a 300 Watt inverter. I couldswitch the entire office to DC, eliminate the 300 Watt inverter and increase efficiency. This however would require to change wiring, buy additional DC-DC converters, ...
  2. J

    power box

    I have build a small circuit with 3 voltage dividers to measure individual series voltages with an Arduino Nano. The Arduino Nano is connected to a Raspberry PI 3 (in addition to the EpEver Tracer 2210A). Both inputs (series voltage measurements + Tracer 2210A statistics (via 'gotracer'...
  3. J

    power box

    Yes, the battery makes upthe first layer. The second layer contains: Fuses, on/off swiches, solar charge controller, solar charge controllermonitor display, inverter, additional 12Vusb adapters. The only connections between the first and second layer are: a) balance leads (JST-XH 3S) b) main...
  4. J

    power box

    I have build a small prototype system entirely contained in an Ikea box (12x16x10 inch). This system is in production since May 2017 and provides all of the power for my home office. Pictures: https://goo.gl/photos/ASZPmW9Ww5wAQVjX6 Source code: 1) 18650 Cell discharger...
  5. J

    power box / off grid office

    I have build a small prototype system (3S26P)entirely contained in an Ikea box (12x16x\ 10 inch). This system is in production since May 2017 and provides all of the power for my home office. Next up is a battery to extend the range of the Torqeedo 1003 electrical outboard motor on our sailboat.
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