this post was submitted on 15 Aug 2023
31 points (89.7% liked)

Selfhosted

39162 readers
364 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

  1. Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.

  2. No spam posting.

  3. Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.

  4. Don't duplicate the full text of your blog or github here. Just post the link for folks to click.

  5. Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).

  6. No trolling.

Resources:

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago
MODERATORS
 

I'm tired of buying a new 12 V battery every 1-2 years. I have about 4 small (rated ~ 300 W [not VA]) UPSes with 7 Ah, 12 V, maintenance free batteries.

I'm thinking about replacing them with one, powerful unit. But the more powerful the unit, the more it costs - non-linear.

Do you have experience with some DIY solutions? Like 12V DC to 230V AC inverter, battery charger, some UPS controller (simple relay?)?

Or maybe you have some other idea that is cheap(ish)?

you are viewing a single comment's thread
view the rest of the comments
[–] OmltCat@lemmy.world 6 points 1 year ago (1 children)

It’s 12V so I guess you can Frankenstein something with a car battery. But honestly this sounds more like a LTT video than something I would trust not to burn my house down.

[–] QuinceDaPence@kbin.social 2 points 1 year ago* (last edited 1 year ago)

You'd want to use a deep cycle (sometimes labeled "marine") battery, not a car battery. Car batteries can put out a shit ton of power for a very short time but their total capacity is pretty low.

Also you still want AGM, Gel or something else sealed like that. You don't want a Flooded Lead Acid battery charging/being trickle charged inside your house.

Op could also swap to LiFePO4