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Description
Koolux BK6S & Koolux BK6S PRO eBike Battery - 48V48V 13Ah Silverfish Lithium Battery Pack for Koolux BK6S 4. 0 & Koolux BK6S PRO Upgrade your Koolux BK6S 4. 0 Folding E Bike or BK6S PRO with this high performance 48V 13Ah Silverfish lithium battery designed to deliver stronger torque, smoother acceleration, and excellent long distance capability. Built with 2600mAh A+ Grade cells and an intelligent 30A BMS, this battery ensures stable voltage output, reliable power delivery, and long term durability
48V 13Ah Silverfish Lithium Battery Pack for Koolux BK6S 4.0 & Koolux BK6S PRO
Upgrade your Koolux BK6S 4.0 Folding E-Bike or BK6S PRO with this high-performance 48V 13Ah Silverfish lithium battery designed to deliver stronger torque, smoother acceleration, and excellent long-distance capability. Built with 2600mAh A+ Grade cells and an intelligent 30A BMS, this battery ensures stable voltage output, reliable power delivery, and long-term durability for both commuting and extended riding.
Key Features
- Optimised for Koolux BK6S Models: Fully compatible with BK6S 4.0 and BK6S PRO, ensuring improved torque and stable output.
- High-Power Performance (48V 13Ah): Delivers smooth acceleration, reliable torque, and steady voltage.
- A+ Grade 2600mAh Cells: Provides long lifespan, stable performance, and high efficiency.
- 30A Intelligent BMS: Protects against overcharge, discharge, overcurrent, overheating, and short-circuit faults.
- 4-Pin Charging Port: Safe and stable charging interface for Koolux Silverfish systems.
- Durable Aluminium Silverfish Case: Offers excellent heat dissipation, strength, and long-term durability.
- Secure Locking System: Comes with 2 keys to lock the battery to the mounting rail to prevent theft.
- On/Off Switch: Allows safe shutdown when not in use to preserve battery life.
Technical Specifications
- Voltage: 48V
- Capacity: 13Ah
- Battery Type: Lithium-Ion (Li-Ion)
- Cell Specification: 2600mAh A+ Grade
- Configuration: 13S5P
- BMS Rating: 30A Intelligent Protection
- Suitable Motor Power: 200W – 1000W
- Charging Pins: 4-Pin Interface
- Charger: 54.6V 3A Fast Charger Included
- Default Connector: XT60 Female
- Dimensions: 390mm × 110mm × 75mm
- Weight: 4.8 kg
- Colour: Silver
- Material: Aluminium Housing
- Certifications: UKCA, CE, UN38.3, MSDS
What's Included
- 1 × 48V 13Ah Silverfish Battery
- 1 × 54.6V 3A Charger
- 2 × Keys
- 1 × 4-Pin Discharge Cable (XT60 Female)
- 1 × Mounting Rail
- 1 × Instruction Manual
Compatible With
This battery is fully compatible with:
- Koolux BK6S 4.0 Folding E-Bike
- Koolux BK6S PRO
It also works with various 48V Silverfish-style e-bikes including folding bikes, city bikes, trekking bikes, e-MTBs, and 48V electric bike conversion kits.
Quality & Reliability
Each battery undergoes strict testing to ensure capacity accuracy, voltage stability, and long-term durability. Designed for hundreds of charge cycles, this replacement battery restores your Koolux e-bike to peak performance with dependable power for daily commuting or long-distance riding.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Secrets, Seduction, and Rockstars!
Format: Kindle
Rockstars, secrets, and off-the-charts chemistry? Sign me up!
Cinder Blaze takes us on a rollercoaster of passion and peril with Knot Their Omega. Blair Vesper, a secret Omega masquerading as an Alpha, strikes a risky deal to tour with Blooming Salvation, a band teetering on the edge of chaos. Enter Icarus Morrigan, the enigmatic manager, and his three complicated and irresistibly sexy rockstars: wild Kenji, icy Kaiser, and fiery Nathaniel.
This book delivers steamy Omegaverse drama, sizzling slow-burn romance, and just the right dash of angst. The tension between Blair and the band crackles like electricity onstage, while the societal stakes add depth to the spicy dynamics.
Short, sharp, and oh-so-sinful Knot Their Omega will have you hooked from the first note!
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Reviewed in the United States on December 9, 2024
★★★★★ 5
ABSOLUTELY A MUST for Omegaverse Girls!!!
I ABSOLUTELY LOVE Jillian West and her books!!! I’m so happy I already bought book two and now I have to buy the others for the Assurance Security series!!
Not gonna lie Val kind of annoyed me at the beginning but she grew on me!! Her men are chef’s kisses!!! Holt annoys me some but I can let it slide. I already bought part two so I’m going to be reading that in between work phone calls!!!! DON’T TELL MY BOSS 😂😂😂😂
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Reviewed in the United States on September 30, 2025
★★★★★ 4
Baby bumps and bodyguards
Format: Kindle
Dark, emotional, and unexpectedly tender, Not Ready is an omegaverse romance that delivers found family feels, fierce protectiveness, and a very pregnant heroine who refuses to break. Vale’s on the run from a stalker, but lands in the arms of three private security alphas, cue the swoony tension, fake marriage twist, and slow-burn heat.
It’s a little gritty, a little soft, and a whole lot addictive. If you love protective alphas, high stakes, and heroines with quiet strength, this one’s a must-read.
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Strong Omegaverse Comfort and a Attention Grabbing Plot
Format: Kindle
Jillian West never misses when it comes to Omegaverse, and Not Ready is no exception. This story was the perfect blend of cozy comfort and emotional depth while still delivering a strong plot.
Vale is such a powerful heroine, she is strong, capable, and determined but I love that she still allows her pack to love and take care of her. It’s that balance of independence and vulnerability that makes her so relatable.
The relationship dynamics were amazing: Bishop is steadfast and completely head over heels, Mercy is skeptical but protective in his own way, and Holt is the hesitant one whose slow fall is so satisfying to watch unfold.
The romance hits that sweet spot between insta-love and cautious build, keeping me hooked the entire way through. And that ending. Oh my god, the cliffhanger! I need the next book in this duet immediately.
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Reviewed in the United States on August 28, 2025
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
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Reviewed in the United States on November 11, 2024