Using battery power to go off the City's power grid


I'm using a Bluetti AC200MAX 2,200 watt expandable power station to take my system off the city's power grid.  It runs off a lithium ion phosphate battery with a 4,800 watt pure sine wave inverter. My total system only takes about 450 watts so I have never heard the fan kick on - it is totally silent. The music comes from a completely black background, with a huge soundstage that sounds very natural. I know that Ric Schultz has talked about these types of setups and there is a very expensive Stromtank battery system that is marketed to audiophiles. Anyone else tried this type of setup in their audio system?

Here is a link to a review:

 

128x128sbayne

Thanks.  How do you apply and then remove the 25 watt resistor when connecting the battery with the Giandel?  Which smart plug do you use for recharging the battery, and how?

Giandel actually recommends 500 Ah of batteries for the 5000.  However, your system is only 220W, the present 200 Ah battery at 12.6V should last about 10 hours for continuous full power music at maximum output.  For most music, the average power requirement would be much less, so you would get probably 40+ hours of continuous music.  If you listen 1-2 hours/day, I would think that the single 200Ah battery should be enough for several weeks without needing a recharge.

How to use resistor: https://youtu.be/ZlrtmJRfSP8

I use a TP Link HS105 Smart Plug to turn on/off power to the charger. I use the Kasa app on my iPhone to schedule the power on/off.  I leave the power switch on the charger to on.

Ease of use is very important to me because it's not just me that uses the system. So part of making it easy, I leave the inverter on 24/7 and this drains the battery quickly. Last night while watching a movie with the family, the charge went down to zero.  So I'm getting a bigger battery and I may also start charging midday for an hour to mitigate losing power during late music listening or movie watching. 

If one doesn't plan to leave the inverter on 24/7, then a 200Ah battery is plenty and the 40A charger would be more than enough. 

One datapoint.

Clean power matters based on use of NBS power cords which prompted even my audio hating x to ask What did you do? 

Things that made no difference either way in The. System. That. Time. Forgot. They did not make things worse. They did not make things better. They simply made no difference to the sound quality in my system.

Your. Mileage. Will. Vary.

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Tice

Listening at night compared to listening during the day

You know what will improve the sound quality of your system? A 1/2" A80 + 468 = live. I make this bald faced subjective statement of fact having never heard your system. 

You're prolly right.

chowkwan,

"A 1/2" A80 + 468 = live."  I'm guessing you mean the Studer A80.  What's the 468?  Of course the source is the most important factor in achieving live high fidelity.  Aside from that, how do you achieve clean power?  Which NBS power cords? 

I'm still enjoying the Giandel 5000 and the Amperetime Battery.  I'm also happy with the Progressive Dynamics 80A charger.  The fan noise on this charger is lower than the Amperetime charger I had before. The Leviton 20A smart outlet is also doing a great job of charging the battery twice a day.

My previous power conditioner can detect the THD of the AC.  On the Giandel, THD is 2%.  On the Bluetti AC300, THD was 4%.  Both are Pure Sine Wave inverters but the Giandel 5000 is obviously at a different level.

I currently use a cable adapter on the high current terminal block on the Giandel which is not ideal because it may limit transient current delivery.  Tomorrow, the 1m Furutech DPS 4.1 power cable, Furutech FI 52 NCF 20A connector, and Furutech FP-209R spade connectors are arriving.  I plan to put this cable together and use it to power my conditioner from the terminal block of the Giandel.