Sonoff DC uController

Temperature Probe

Small Pure Sine Inverter (300w - size depends on fridge)


Fridge Specifications

Running Power70 w
Amperage @120V0.6 A
Amperage @12V6 *1.2 = 7.2A
Power Using Inverter

50*1.2 = 60w

70*1.2 = 84w


Idle Power 40 w
Amperage @120V0.6A

Lowest Temp3.9 C


Battery 1110Ah1.3 kw
Battery 2110Ah1.3 kw
TOTAL220Ah2.6 kw

Runtime Calculation

Battery Power2600 w

Daily Power Consumption


1600 w

< 2 days

In reality, it should only run 8 hours out of the day which should reduce the daily power consumption to about 500w or 42 Ah.

This would give me a run time of roughly 5 days with no other loads on the system.


There is something wrong with this fridge.... Not sure if this is a result of limited ventilation or not... 

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