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: https://github.com/jens18/li_ion_cell_discharger
2) EPsolar Tracer4215BN and Tracer2210A modbus library (for 'golang'):
https://github.com/jens18/gotracer
Specifications:
Solar panel: Phono Solar 260W, 60 cells, efficiency 16%, Impp = 8.46A, Vmpp = 30.8V
Solar charge controller: EpSolar/EpEver Tracer2210A, 20A rated charge/discharge current, 'custom battery' configuration
Inverter: Microsolar INV-300PS (300W, 12V, 10.5V cutoff, USB)
Battery: 12V nominal, 3S36P (108 18650 cells), 2000 mAh average cell capacity, 72Ah, 864 Wh
Battery voltage sensor: Arduino Nano
Solar charge controller + batterymetric capture: Raspberry PI 3
Cloud monitoring: AWS ECS + Graphite
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: https://github.com/jens18/li_ion_cell_discharger
2) EPsolar Tracer4215BN and Tracer2210A modbus library (for 'golang'):
https://github.com/jens18/gotracer
Specifications:
Solar panel: Phono Solar 260W, 60 cells, efficiency 16%, Impp = 8.46A, Vmpp = 30.8V
Solar charge controller: EpSolar/EpEver Tracer2210A, 20A rated charge/discharge current, 'custom battery' configuration
Inverter: Microsolar INV-300PS (300W, 12V, 10.5V cutoff, USB)
Battery: 12V nominal, 3S36P (108 18650 cells), 2000 mAh average cell capacity, 72Ah, 864 Wh
Battery voltage sensor: Arduino Nano
Solar charge controller + batterymetric capture: Raspberry PI 3
Cloud monitoring: AWS ECS + Graphite