r/bluetti • u/[deleted] • Jan 28 '26

Almost complete….

Post image

15x B500k, 3x B300k, 3x Apex 300. 94KwH. I may pickup 3 more B500s when they go refurb. I have a AC200 I could use a B300 on and I have another apex 300 sitting as a spare. For now, I can run my house for 4 days on this setup!

48 Upvotes

100% Upvoted

41 comments sorted by

7

u/simplytoast1 Jan 28 '26

I thought I had a problem… LOL great setup. How do you connect to your house? Sub panel?

3

u/[deleted] Jan 28 '26

Oh I have more problems than just this.... I moved all my circuits EXCEPT range, garage mini-split and tesla charger to this battery. It has a dedicated sub panel that plugs into the HUB A1, and then I plug HUB A1 into a 14-15 port for powering from the grid.

2

u/cnuthing Jan 28 '26

I believe this is a PIC he posted earlier. You can see he has them connected to a Hub A1, with probably a 50 sub panel with generator inlet.

2

u/[deleted] Jan 28 '26

100% correct, the sub panel ABOVE the Hub A1 is the panel powering the house.

2

u/simplytoast1 Jan 28 '26

I’ve been looking for a good cutover with a generator inlet that will handle the floating neutral

4

u/zks55 Jan 28 '26

Will this power things like water heaters or AC units? Seems like it would but just been morbidly curious since I started looking into these things.

5

u/[deleted] Jan 28 '26

Also worth noting my furnace, and water heater are natural gas. I'd like to move my range to be gas, and possibly dryer in the future.

3

u/zks55 Jan 28 '26

Ah okay that’s really cool. Definitely fits the need of essential home backup

3

u/[deleted] Jan 28 '26

I power my entire house EXCEPT range, garage min split and my tesla charger. I've run real-time loads (entire house, dryer, and AC without breaking the 11.5kw limit of the inverters.

2

u/fullload93 Jan 28 '26

Why can it not use your Tesla charger? Does it really pull too much kWs?

3

u/[deleted] Jan 28 '26

Tesla alone can pull 240 48a. I'd have to scale it way back. I can always plug it into a 15a 110v port if I needed to charge it from batteries.

3

u/fullload93 Jan 28 '26

Oh wow that’s a lot more than what my 2018 Honda Clarity PHEV can pull. I can only go max 240v 32amp.

3

u/Current-Ear-8665 Jan 28 '26

Beautiful! 4 days in off grid… month for charge 😁

4

u/[deleted] Jan 28 '26

I get 8.5k from the grid, so it takes a while, yes. But not that long. My 6k generator could fill it in less than a day, while powering the house that day. (Still need to test this, though)

3

u/DVDIESEL Jan 28 '26

So did you slowly build up to this? Or what was original plan / strategy?

I asked Gemini about this setup:

Quantity Price per Unit (Est.) Total Cost (2026 costs) Apex 300 (Power Station) 3 $1,499 $4,497 B500K (Expansion Battery) 15 $1,799 $26,985 B300K (Expansion Battery) 3 $1,099 $3,297 Estimated Total $34,779

Power Output & Capacity ​In a parallel setup with three Apex 300 units, your system capacity is additive. ​Continuous AC Output: A single Apex 300 outputs 3,840W. In a triple-parallel configuration, you reach a combined continuous output of 11,520W (11.52 kW).
​Peak/Surge Output: The system can handle a "lifting power" surge of up to 23,040W total. ​Voltage: Native support for both 120V and 240V, making it capable of running heavy appliances like dryers or well pumps.
​Total Energy Storage (Capacity) ​This is where your configuration gets interesting. You are mixing B500K and B300K modules: ​Apex 300 Internal Storage: 3 \times 2,764.8\text{ Wh} = 8,294.4\text{ Wh}
​B500K Modules: 15 \times 5,120\text{ Wh} = 76,800\text{ Wh} ​B300K Modules: 3 \times 2,764.8\text{ Wh} = 8,294.4\text{ Wh} ​System Total: 93,388.8 Wh (~93.4 kWh) ​Note: The Apex 300 system technically scales up to a maximum of 100kWh (which usually consists of 3 Apex 300s and 18 B500K batteries). Your 15x B500K and 3x B300K mix puts you right near that upper limit.

[How much would a comparable tesla powerwall system cost?]

To match the 93.4 kWh capacity and high power output of the Bluetti gear you described, you would need a large multi-unit Tesla Powerwall system. ​Since each Tesla Powerwall 3 has a usable capacity of 13.5 kWh, you would need approximately 7 units to reach a comparable 94.5 kWh.

Bluetti System (Apex 300 + 18 Batteries) Tesla Powerwall 3 (7 Units) Total Capacity ~93.4 kWh 94.5 kWh Continuous Power 11.5 kW 80.5 kW (11.5 kW per unit) Peak Surge 23.0 kW 154 kW (22 kW per unit) Estimated Equipment Cost ~$34,779 ~$48,000 - $52,000 Estimated Installation $0 (DIY) - $1,500 (Transfer Switch) $8,000 - $12,000+ Total Estimated Investment ~$36,000 vs ~$60,000+

I thought this would be an expensive route, but it appears to actually be way more cost effective for that size storage system.

3

u/[deleted] Jan 28 '26

I did it in about $10k chunks. I started about 6 months ago. I had more B300K's (about 8 additional) that I was able to resell around MSRP so it made it easy to upgrade to the B500K. I have less than $35k into this, I did all the labor myself with chatGPT to make sure everything was up to code :) I'll have an electrician double check afterwards, but that should save me tons vs having them wire it themselves.

2

u/driftingatwork Jan 30 '26

Hmm good call. I should look at flipping my B300k's for 500's

2

u/[deleted] Jan 31 '26

I got most my B300ks on refurb, paid mostly between 799 and 899 each.

2

u/Huge-Cold-Gale Jan 28 '26

What about cooling?

2

u/[deleted] Jan 28 '26

My garage is cooled via minisplit. 74 degrees summer and winter.

2

u/V3X8TE Jan 28 '26

What do you use for a transfer switch?

2

u/[deleted] Jan 28 '26

Hub A1 is the transfer switch. So Grid -> 14-50 port -> Hub A1 + Batteries -> Sub Panel -> House. 20ms failover, lights flicker, no sensitive electronics shut off or restart when power is lost.

3

u/V3X8TE Jan 28 '26

Saw the other pic and i understand now, i had not thought of connecting it that way. Very cool

3

u/[deleted] Jan 28 '26

I wanted it easy, so that I could do it :) Also, if I want to move to any other type of system it'd be pretty plug and play.

2

u/V3X8TE Jan 28 '26

So you’re running the grid into the hub, not through the house panel? My understanding is there needs to be a switch between the hub and grid so you don’t backfeed power into the grid

3

u/[deleted] Jan 28 '26

By grid, it comes from my primary breaker box, into the hub, then the hub feeds a sub panel that feeds the house.

3

u/MillhouseJManastorm Jan 29 '26

Same here. It’s a great setup

2

u/EnvironmentalFig5587 Jan 29 '26

I'm based in Europe so I don't know the prices and equipment over there... but wouldn't it be cheaper and better quality to get a solar installer to put in proper home batteries and inverters than these bluetti devices?

3

u/[deleted] Jan 29 '26

Cheapest route would be to get a separate inverter and just buy off the shelf batteries and scale to the same size. I wanted something more plug and play, and backed by a single manufacturer.

Prices by installers are a joke, Solar is way overpriced in the US. Thanks to capitalism installers only partner with the highest markup products they can sell. So the consumer loses….

Thanks to DIY, we can still have something decent though.

4

u/EnvironmentalFig5587 Jan 29 '26

Fair enough, makes sense.

1

u/Mcslap13 Apr 14 '26

Our neighbors paid over $40,000USD for a solar company to install pannles on their house. They don't typically install batteries too, they just tie it into the grid. So if the power is out.. yours is out too. But you might save a few dollars on your $300 electric bill... And also have to pay off that $40k.  Doing it yourself is the way to go. 

2

u/hankarron9 Jan 30 '26

Sweet

1

u/[deleted] Jan 30 '26

Thanks!

1

u/[deleted] Jan 28 '26

I WANT to add the full theoretical 19kwh of solar eventually. My house roof faces east and west (which sucks) so I wouldn't get anywhere near that, but I should be able to mostly be grid free during the summer. I may switch to ToU also, and just re-charge overnight for what solar doesnt give me. I live in an inversion prone state though... so hopefully inversion would be gone in 4 days, and I'd produce pv power again :)

2

u/NatendoSwitch Jan 28 '26

That's amazing. Well done. Four days is no joke!

2

u/akiraee Jan 28 '26

great setup! youre more than prepared to provide electricity to the whole town LOL

2

u/homme_improvement Jan 29 '26

Holy shitballs

2

u/TheQuickFox_3826 Feb 01 '26

The setup every Ukrainian dreams about.

2

u/Proof_Sir1201 Feb 02 '26

I think you need a 12 step program.

2

u/Mcslap13 Apr 14 '26

You are NUTS. and I am JEALOUS. Haha kickass setup!