SKU: 57594689420

1,144 KWh (1 MWh) Industrial Battery Backup And Energy Storage Systems (ESS) (277/480Y Three Phase)

Sale price$667180.80 Regular price$741312.00
Save 10%

Pay in installments of $185328.00 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 19 - Aug 24

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

1,144 KWh (1 MWh) Industrial Battery Backup And Energy Storage Systems (ESS) (277/480Y Three Phase)The industrial battery backup and energy storage system for generator replacement can typically power a 500 KVA 480 VAC load for over 2 hours. Backup time increases as the load drops with minor energy consumption adjustments like selectively running HVAC, turning off all unnecessary lights, and powering down and unplugging all non critical appliances. Need more backup time? Just add another unit. The only limit is the number of circuits available on

The industrial battery backup and energy storage system for generator replacement can typically power a 500 KVA 480 VAC load for over 2 hours. Backup time increases as the load drops with minor energy consumption adjustments like selectively running HVAC, turning off all unnecessary lights, and powering down and unplugging all non-critical appliances. 

Need more backup time? Just add another unit. The only limit is the number of circuits available on your electrical panel. One unit takes up one breaker space.

The system is UL and CE listed, made in the USA (California), and made up of LiFePO4 (lithium iron phosphate) batteries. LiFePO4 batteries are much, much safer than standard lithium batteries and have a 10 year minimum approximate useful life. 

Besides acting as a battery backup system, it also allows for demand charge reduction (lower electric bill), peak shaving (lower electric bill), and integrates with solar panels (micro inverter systems), wind power, or other energy sources.  

  • Voltage/Connection: 277/480 Three Phase
    • Uses 350 Amp Three Pole Breaker Minimum
  • Power Rating: 500 KVA Minimum
  • Battery Capacity: 1,144 KWh (1 MWh)
    • Typically Runs A 500 KVA Load For ~2 Hours
    • Typically Runs A 250 KVA Load For ~4 Hours
    • Typically Runs A 100 KVA Load For ~ 10 Hours
    • Typically Runs A 50 KVA Load For ~ 20 Hours
  • DC Bus Voltage: 666 Volts
  • DC Amp Hours: 1,728 Ah
  • Dimensions (D x W x H): 20' x 8' x 8'
  • Weight: 15.7 tons
  • Container: NEMA 3R / IP 54
  • Compliance: CE, UL
    • Batteries Are UL 1973
    • Inverter Is UL 1741
  • Standard Warranty: 10 Years
  • Operation Mode: On Grid or Off Grid
  • Part Number: BBP-EP-500KVA-1144KWH-277480SP

For more information, please contact Battery Backup Power, Inc. at by phone at (855) 330-7799, by chat (lower right hand corner of this screen), or by email at [email protected]

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57594689420

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.2 ★★★★★
Based on 9 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
H
Verified Purchase
HelaReads
Natrona Heights, US
★★★★★ 4
An excellent strapless option
Size: XX-Large, Color: Nude
Extremely comfortable! It didn’t slip down like some do, so I don’t feel the need to tug it up. Felt like I wasn’t wearing anything at all. I also like that it comes with optional straps. Great coverage. The two things to watch for is the top seam is a little thick, so it won’t work under thin tops, and the pads will move around, but they are easy to adjust or remove. On the whole I find this a great fit and easy to wear, at an excellent price point.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
T
Verified Purchase
Tammy
Alexandria, US
★★★★★ 5
Great!
Size: XX-Large, Color: Nude
REVIEW FROM A REAL PERSON WITH NO FINANCIAL INCENTIVES This is my first time ever wearing a strapless bra and I really like this one! It's very comfy and feels like wearing any other sports bra just, well, without the straps (though they do include straps in the box that you could attach if you wanted). I'm somewhere around a 40DDD and got a 2x and it fits well, though I did wear it to work one day and by the end of the day, it did feel like it was digging/squeezing into my side a bit too much (however it had been 10hrs by then). The bra IS stretchy but if I were really any bigger, I think I'd want to go to a 3x. Only very minor issues with it slipping, nothing even close to where I was worried anything was going to pop out or anything, even after being out in 90F heat.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
L
Verified Purchase
Lagina Sparks
Natrona Heights, US
★★★★★ 3
Stays in place
Size: Medium, Color: White
I’d give the Letts Jolli Push-Up Strapless Bra a solid 3 stars. The fabric quality is actually really nice—it feels soft, smooth, and comfortable against the skin, which is a big plus for something strapless. It also does a great job staying in place. I didn’t have to constantly adjust or worry about it slipping down throughout the day, which is usually my biggest concern with strapless bras. That said, the “push-up” aspect was a bit disappointing. It didn’t really provide much lift or enhancement like I expected, so if you’re looking for noticeable cleavage, this might fall short. Overall, it’s comfortable and reliable for staying put, but it doesn’t quite deliver on the push-up promise.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 1, 2026
K
Verified Purchase
Kim Davidson
Omaha, US
★★★★★ 5
It holds the girls up!
Size: Large, Color: Nude
This is absolutely the best strapless bra I have ever owned! It stays put, doesn’t ride up or ride down & I don’t have to adjust it. It fits true to size. Worth the money! It’s also not the sexiest bra, but when you just want a strapless bra that holds the girls up, I promise it will do that!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
D
Verified Purchase
Dee
Cuba, US
★★★★★ 5
Will be my go to strapless for sleeveless everything
Size: Medium, Color: Nude
Ok so, this did not disappoint. Supportive and has cups/padding so there's no show through. Stays in place. Sturdy will not roll on you or stretch out half way through your day/ evening. Straps are included but not necessary. Do not try to put on right out of the shower. You also need to step into it to pull up. Do not try to pull it over your head. Perfect for under spaghetti string tops/tube tops. I am 135 lbs, 34DD or a 36D depends on bra. I bought a medium and it holds everything tight. I believe I could also go with a large at this weight to have a little less compression.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026

recommand products