Hey everyone! Recently, Portugal and Spain faced some serious power outages, and it's got me thinking about setting up a reliable battery backup system for my home. I want to ensure I can power several devices if something like this happens again.
### Here's What I Need Help With:
- **Devices to Power:**
- A fridge and a separate upright freezer
- An induction hob
- My computer and a monitor
- Modem, router, switch, and ONT
- Ability to charge multiple phones and laptops
### Runtime Needs:
- The fridge and freezer should run for 24+ hours during an outage.
- Short bursts for the induction hob, computer, and monitor (around 1 hour a day).
- Network equipment needs to be always on.
- Charging phones/laptops as required.
### Equipment I Already Have:
- A 48V 100Ah LiFePO4 battery pack
- 2 AWG silicone electrical cable (red and black, each 2.5m)
### Important Considerations:
- Quality gear preferred, looking for reliable brands like Victron or SMA.
- I want low-noise inverters since I'll install them in a living space.
- Budget is under 2000 EUR for everything excluding batteries and cables.
### Specific Questions:
- What additional equipment do I need (inverter, charger, etc.), and what type should I get?
- What type and gauge of cables do I need?
- Is one battery sufficient for this setup?
### Goals:
- To only power these devices during outages (idle otherwise).
- Auto-recharge the system from 50% to 100% and then turn off.
- I plan to make it solar-ready for future expansion.
3 Answers
Honestly, setting up under 2000 EUR for everything is going to be a challenge. If you're looking for something reliable, check out brands like Ecoflow or similar portable power stations. They're user-friendly and could fit your needs well.
You might run into issues with noise if you're hoping for a silent inverter. Combine the wattage of all the devices you'll need running at the same time, and check how long your battery will last under that load. Also, keep in mind how to disconnect from the grid safely—some hybrid inverters handle this automatically, which could save you a lot of hassle!
For the inverter, I’d recommend the Deye 3.3kW hybrid inverter. Just make sure you calculate your total wattage for all your devices to see if they’ll run simultaneously. If you do the installation yourself, you might be able to make it work within your budget!
Thanks for the suggestion! Just to clarify, the 2000 EUR is only for equipment outside of the batteries. If I end up needing an extra battery, that could bump the budget up by about 1000 EUR.