Used to power lights, a TV, and computers during an unforeseen power outage. This inverter cannot run an AC fridge. This is a good starters system to get into off-grid or backup energy systems.
You can run a DC fridge of this system for 6 days. Checkout my Youtube video about the tests on such a fridge here.
You can charge the battery from the grid and use the 1,280Wh in the battery when the grid goes down.
This system can also be interesting for a car to go camping. It’s small and can run essential appliances.
Part List
| Part | Price |
|---|---|
| 600W Giandel Inverter | $90 |
| 12V 20A charger | $110 |
| 12V 100Ah battery | $224 |
| MRBF fuse block | $31 |
| 30A MRBF fuse | $16 |
| 75A MRBF fuse | $17 |
| 6AWG inverter cable | $32 |
| 6AWG M8 ring terminals for inverter | $10 |
| Total | $530 |
Description
A 12V 100Ah battery is connected through an MRBF fuse holder that has a 75A fuse going to the inverter. The other fuse coming from the wall charger is 30A.
The battery charger comes with leads and ring terminals. The positive will fit on the 30A MRBF fuse and the negative goes to the battery negative (which also fits the M8 or 5/16″ ring terminal).
The inverter connects to the MRBF 75A fuse and the negative connects to the main battery negative.
Explanation
This system is meant as a backup to run small appliances like lights, computers, radio’s,…
It is not intended to run an AC fridge, because the inverter power is too small. A DC fridge can be used.
This small system uses a single 12V battery at 100Ah. Thats a total of: 12.8V*100Ah=1,280Wh of stored energy.
Here are some estimated runtimes of a fully charged battery:
- 100W TV: 11.6 hours
- 50W laptop: 21 hours
- 20W AC light: 42.6 hours
- 5W AC aquarium pump: 85 hours
- 25W DC fridge: (1,280Wh/(25W*8h duty cycle))= 6 days
Do you have a different appliance?
Use this formula to calculate how long it will run:
10W inverter idle power consumption + 50W laptop = 60W total load.
1,280Wh/60W load = 21 hours of runtime.
Did you see i added 10W inverter idle power consumption? That’s because the inverter also consumes power even when no loads are attached.
So if you don’t use the inverter, it’s better to turn it off.
If you are running DC devices, like DC led lights, then you don’t have to add the inverter idle power consumption.
Questions? Send me an email here.