Discharge + solar cycling

Cell Curve

Pack voltage without sun, then battery cycling with a mapped solar array — daylight, sun arc, tilt, azimuth, and cloud cover.

System voltage

System load

Battery bank size

Chemistry

Flat voltage, low sag, ~100% usable

Starting SOC100%

Low battery cutoff20% SOC

Load sheds at this SOC and will not discharge further. LFP typically 10–20%. Lead-acid typically 50%.

System efficiency100%

Presets

Solar array

Click the map, then set facing and tilt

33.869° S, 151.209° E

Date

Panel open-circuit voltage

Voc

Panel short-circuit current

Isc

Panel wattage

Number of panels

Panel configuration

1S2P · 21.6 V Voc · 12.2 A Isc · 200 W STC

Facing0° N

Install angle34°

0° is flat. Equator-facing at ~latitude is a solid starting point.

Use specified solar yieldReplaces cloud cover. Daily kWh is spread over daylight using the sun arc at this site.

Solar yield

kWh/d

Cloud cover

Cloudy block is centered on solar noon. Overcast hours drop beam and keep ~22% diffuse.

Cycling timespan

Custom span

Terminal voltage

Unassisted discharge — no solar, start SOC to low-battery cutoff

LiFePO44S nominal 12.8 VCutoff 20% · 12.98 V

Dark runtime

17h 40m

Current

4.55 A

C-rate

0.05 C

Energy out

1.06 kWh

Sun arc

Solar elevation for the selected date. Shaded region is the cloudy block.

Daylight 11.2 h · sunrise 06:24 · sunset 17:36 · peak sun 46° · harvest 1.10 kWh/d · first cutoff D3 04:30 · LVD 20%

Battery cycling

SOC over 7 days with load and PV. Amber fill is array power.

20–100% SOCCutoff D3 04:30

Harvest / day

1.10 kWh

Daylight

11.2 h

Peak altitude

46°

Discharge points

60 W · 13.54 V start · 12.98 V end

SOC	Time	Voltage
100%	0 min	13.54 V
75%	17h 40m	12.98 V
50%	17h 40m	12.98 V
25%	17h 40m	12.98 V
20%	17h 40m	12.98 V

Clear-sky POA from sun position at the map pin, panel tilt/azimuth, and Meinel air mass. Cloud cover is a noon-centered overcast block. Estimate only — not a substitute for a site survey or manufacturer I–V data.