Dries Buytaert

Solar panel · Boston

99%

Battery

3 min ago

I have a solar-powered website at solar.dri.es (mirror). It runs on a Raspberry Pi with a solar panel on our roof deck.

Every 10 minutes, the Raspberry Pi updates this status page. This page is hosted separately, so if my solar-powered website goes offline due to an extended lack of sunlight, cold preventing the battery from recharging, or a system crash, you should be able to see that here.

Battery
99%
Day or night
Day
Charging
Charging - very slowly
WiFi
Good
Solar system uptime
51 days
Raspberry Pi uptime
5 days
More details
Charge stage
Float charge
Battery voltage
13.57 V
Battery current
0.12 A
Battery cutoff voltage
11.2 V
Battery restart voltage
12 V
Power supply
1.26V (normal)
CPU usage
9%
Memory usage
42%
Disk usage
3%
CPU temperature
52°C (normal)
Outdoor temperature
27°C

Hourly battery charge

Each row is a day and each square is an hour. The deeper the red, the lower the charge; grey means the Raspberry Pi was offline.

LowFullOffline
Battery capacity by hour Jun 16 Jun 15 Jun 14 Jun 13 Jun 12 Jun 11 Jun 10 Jun 9 Jun 8 Jun 7 Jun 6 Jun 5 Jun 4 Jun 3 0 2 4 6 8 10 12 14 16 18 20 22

Daily battery levels

Each day's highest and lowest charge. It helps track trends and the risk of the Raspberry Pi shutting down from insufficient sunlight or extreme cold.

Daily highDaily lowDanger zone
Battery high and low by day 0% 20% 40% 60% 80% 100% Apr 26 May 6 May 16 May 26 Jun 5 Jun 15