SKU: 72552658510

52V 20.25AH (14S) Trailblazer Extreme Performance Battery System (IR-7U)

Sale price$710.55 Regular price$789.50
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Ships within 48 hours · Estimated delivery Aug 30 - Sep 4

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Description

52V 20.25AH (14S) Trailblazer Extreme Performance Battery System (IR-7U)If you want the most energy dense, highest performing battery on THE PLANET for your Trailblazer, look no further. This is designed for our new 2000W motor system and features the new 50A BMS and thicker pure nickel for better current caring capability to limit voltage sag. Unreal 1054wh capacity maintains the same weight as the 17. 5ah battery yet increases overall range by over 15%! We proudly design and manufacture all of our e bike batteries here

If you want the most energy dense, highest performing battery on THE PLANET for your Trailblazer, look no further.  This is designed for our new 2000W motor system and features the new 50A BMS and thicker pure nickel for better current caring capability to limit voltage sag.  Unreal 1054wh capacity maintains the same weight as the 17.5ah battery yet increases overall range by over 15%!

We proudly design and manufacture all of our e-bike batteries here in the USA to the most stringent quality guidelines and highest quality materials.  We use only name brand, matched cells to ensure more performance, better safety, and most importantly, better reliability. 

52V 20.25AH Battery Specifications

Configuration: 14S 5P

BMS: 50A discharge, 8A charge capability, cell balancing, reverse polarity protection, overcharge protection, over discharge protection

Case: Reention IR-7U

Charger: Optional

Weight : 8.9lb

Charge Cycles: 500 (80% capacity)

Max Discharge: 50A (2300W)

Max Charge: 4.5A (limited by DC5.5 charge port)

*Battery lead-time is currently 2-3 weeks for manufacturing

What makes our batteries better than the competition?

  • Warranty: 3 Year Limited Warranty backed by a USA company (see terms and conditions for more details)
  • Quality BMS: Custom made BMS (battery management system) to ensure the protection and longevity of your pack
  • Performance: Higher amp capability (thicker nickel, more powerful BMS, thicker wires, higher quality cells)
  • Built in the USA: Built here in the USA and fully tested in multiple steps to ensure safety and performance
  • Matched Cells: Matched battery cells ensure less resistance, less voltage sag, and a longer lasting battery
  • Cell Holders: Custom made (on select packs) cell holders are designed to minimize footprint and create a stronger battery
  • Genuine Cells: We source only name brand, cutting edge cell technology. Name brand cells offer better performance, reliability and safety. We test each and every cell batch to ensure authenticity
  • Built to Order: Your pack is made fresh as soon as you order. This ensures you get the freshest battery possible! 
  • Experience: Our builders have over 12 years of experience building thousands of e-bike batteries. There isn't a more experienced team!
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: 72552658510

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kelley lane
Bozeman, US
★★★★★ 5
Keeps great time
This is actually prettier than I thought it would be and I am tough on everything I wear. Never know what the day will entail, so when I clean it at the end of the day, it’s pretty shine comes right back. I’m pleased with it.
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Reviewed in the United States on May 19, 2024
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godsgirl
Waukegan, US
★★★★★ 3
Very hard to see the HANDS, but pretty
Very pretty and I didn't have to remove links. Hard to see the hands unless you angle it in the light. I'm not sure if I'll keep it. I'll give it some time ..lol and see how it goes before Amazon's 30 day policy.
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Reviewed in the United States on July 12, 2025
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debba
Cuba, US
★★★★★ 3
just makes it around my large wrist - but very pretty
If you also have a large wrist like I do, well ... try it out. Bought it to look delicate and pretty at my son's wedding, to match color of gown. Which it does. Side note: the hands are cobalt blue, for some reason! But you'd have to look up close to discover that. It doesn't take away from the overall look I wanted. Edit: !@#$@! - it BROKE halfway through the wedding! During the dancing, I discovered it on the floor. Downgrading this to one star, of course.
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Reviewed in the United States on July 8, 2023
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Verified Purchase
Amy Miller
Phoenix, US
★★★★★ 2
DIdn't Work
When I got the watch, it wasn't running, so I took it to a local jewelry store and had the battery replaced, which cost another $20+ and it still wouldn't run.
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Reviewed in the United States on September 18, 2023
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Betty
Pawtucket, US
★★★★★ 5
Stunning automatic watch — looks way more expensive than it is
Color: All Gold, Color: All Gold
I bought this OLEVS automatic as a gift for my husband and he was thrilled. The gold-tone finish is rich and consistent, the open-heart dial showing the movement is a beautiful touch, and the day/week sub-dials work smoothly. The caseback shows the automatic movement clearly — you can see the rotor spinning with every wrist movement. It feels comfortable and the bracelet is solid. For the price, this is an outstanding piece. He gets compliments every time he wears it.​​​​​​​​​​​​​​​​
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Reviewed in the United States on April 9, 2026

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