this post was submitted on 18 Mar 2024
799 points (96.1% liked)
Technology
59217 readers
2764 users here now
This is a most excellent place for technology news and articles.
Our Rules
- Follow the lemmy.world rules.
- Only tech related content.
- Be excellent to each another!
- Mod approved content bots can post up to 10 articles per day.
- Threads asking for personal tech support may be deleted.
- Politics threads may be removed.
- No memes allowed as posts, OK to post as comments.
- Only approved bots from the list below, to ask if your bot can be added please contact us.
- Check for duplicates before posting, duplicates may be removed
Approved Bots
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
So just slap a power inverter in there somewhere and you're good to go
To answer the original question, a fridge requires quite a lot of power to operate. Could be 500W. There's also power loss from the voltage conversion, so you need a battery and an inverter that are able to provide more than that - let's say 600W. Car batteries are typically 12V lead-acid batteries. 600W means 50 amps from the battery. That's a huge current. Lead-acid batteries can handle high currents for a short period of time, but high currents have a negative effect on the battery capacity. So my guess is that the fridge could work for a very short period of time.
^^THIS^^
Plus to add that modern kitchen stuff like that will throw on the compressor to cool the unit down with up to a surge of 1200w. Usually for 2-3 minutes as it engages the cooling pumps and moves the refrigerant.
I've run fridge freezer units off battery a few times (deep cycle lead acid, lithium/LFP)
Probably lost about 10% or more to heat.
10% worse efficiency > no refrigerator
Maybe refrigerator until the battery catches on fire!
Inverters have gotten pretty efficient. I have one for my house that's 97.1% efficient.