UPS recommendation for the following wattage of usage.

[HavocXphere]

The UPS must be out of sight in the cupboard or drawer.

I think the answer is building this myself

Do give the fire hazard & impact on ability to claim insurance some thought. House burned down cause I DIY'd some 240V contraption is not a strong look

 

[quovadis]

I am taking DoD and Energy density into account, that's the point.

I'm not necessarily looking for the cheapest price per watt.

What’s wrong with the already made solutions such as the Jackery’s?

 

[mister]

I'm not necessarily looking for the cheapest price per watt.

Just the most work?

 

[AlphaJohn]

Yeah thats why I said not taking DOD into account. But even at 50% DOD you'd need 60 18650s to make up the useable capacity of one truck battery

At just R70 he claims to pay per battery, 60 would easily hit R 4200 for 50AH, thats excluding the wrap/tray and charge controllers, wires plates and such.

For that price you can get 2 x 100AH Lead Acid or 1.5 x 105AH Gel or just a quick search if add another R2200 you can get 200AH LiFePO4 without the firehazard and man hour waste.

Still say, if you not getting "new" batteries for free don't even look at this option. Its great for small DIY like Phone charger or simple battery bank... if you wanna make something that is not portable go with tried and tested.

If it was cheaper/easier with 18650's you would find shops selling pre builds all over the place.

 

[Thor]

I don't want 2 deep cycle batteries in my living room.

This is what 50AH looks like in 18650s, use it in the e-bikes, pretty common.

Price per W is more expensive, but there is much more to the equation than price per W

 

[wingnut771]

I don't want 2 deep cycle batteries in my living room.

This is what 50AH looks like in 18650s, use it in the e-bikes, pretty common.

Price per W is more expensive, but there is much more to the equation than price per W

View attachment 1018084

Ok, now you have a battery for R4500. Now what? Are you going to plug your tv into that? Still need an inverter/charger for lithium.

 

[Thor]

Still need an inverter/charger

You would need that with any option you pick.

 

[Slojo37]

Is it possible to use the IVR-1200LBK (top one on the table above) with a lithium battery, with some sort of charger module in-between?

Since it's 12V, I'm thinking it's a bit tricky with 18650s (3s =11.1V & 4s = 14.8V) but not sure what the acceptable voltage input range would be before triggering an overcharge or low-voltage protection.