web web

Sondors E-bike Battery Replacement

Posted on September 08 2023

Sondors triangle battery

Are you ready to upgrade or replace your Sondors e-bike battery? Let EMP set you up with a higher power battery pack so you can have more fun on your ride! We can rebuild and repair your old battery pack and have it running better than new.

Sondors Bullet Battery Replacement Spare

We can upgrade the bullet-style, water bottle mounted batteries up to 36V 14Ah. The triangle batteries have even more room for up to 65 cells, meaning we can potentially get those up to 36V 18Ah!

From the original Sondors fat e-bike, Thin, or Fold models, including 7 and X variants, we can make sure your battery has fresh, grade A cells for a longer, more powerful ride and longer life overall. We have options to fit any budget, with various lithium ion cylindrical or polymer pouch cells.

Sondors thin, fat triangle battery

Just fill our our Battery Intake Form or give us a call at 1-888-456-9410 and we'll make sure you get what you need. We warranty our batteries for 12 months. We'll even recycle your old battery for you!


Enhance Your E-Bike Experience with Sondors Battery Replacements

Investing in a Sondors e-bike was a choice for exhilarating rides and eco-friendly commuting. However, over time, even the best batteries may start to lose their vigor. This is where EMP steps in to reinvigorate your e-bike experience.
Unleashing the Power: Our Sondors battery replacements are designed to elevate your ride. Whether you own a classic fat tire model, a sleek Thin, or the versatile Fold version, we have the right battery solution for you. Our expertise extends to all Sondors models, including the 7 and X variants.
Options to Suit Every Rider: At EMP, we understand that riders have different preferences and budgets. That is why we offer a range of replacement options. From lithium-ion cylindrical cells to polymer pouch cells, we ensure that each battery pack meets our stringent standards of quality and performance.
Triangle or Bullet: The Choice is Yours: For those with triangle-style batteries, we have the capacity to house up to 65 cells, potentially boosting your e-bike to an impressive 36V 18Ah. Meanwhile, the bullet-style batteries can also be upgraded to 36V 14Ah, providing a significant power boost.
Reliability Assured: We take pride in our work, which is why we provide a 12-month warranty on our battery replacements. This gives you peace of mind knowing that you are not only investing in a more powerful ride but also in a product backed by our commitment to quality.


  • EBike Marketplace: September 09, 2020

    @Dennis – Our current rebuild price can be found here:


  • Dennis Dahler: September 09, 2020

    How much to rebuild the round battery and make it stronger ?

  • EBike Marketplace: September 08, 2020

    @Dennis – We don’t stock replacement Sondors batteries, but we’d be happy to diagnose and repair it for you.

  • dennis george roshay: September 08, 2020

    I have a new (10 days) mxs e-bike from Sonders and I have only charged the battery once, according to proper protocol (charger connection to battery, and THEN plug into AC) It will not charge a second time around with only green light on charger lighting up. Charger shows 54.5 volts. Anyway, this is Sunday Sept.6 and haven’t been able to contact Sondors. They have been really lax in answering my other questions so I’m wondering if you have a triangle battery I can buy while you see whats wrong with my current (new) one. I’m quessing something with that battery pin connector. Anyway I’m writing you in case Sondors doesn’t reply to my e-mails and phone calls in a timely manner..Do you have one of these 48volt triangle batteries instock…?? Thought I’d better start to inquire…thanks for your help and your reply…Dennis Roshay

  • EBike Marketplace: July 21, 2020

    @Phil – We’d be happy to rebuild and upgrade your battery for you:


  • EBike Marketplace: July 21, 2020

    @Brian – It’s best to send your battery in so we can build you a new one inside your case and be sure that it will fit.


  • Phil: July 21, 2020

    I have 2 Sondors Original batteries that have gone dormant on account of their lack of use. I am looking to get them repaired/upgraded and was wondering what the cost and turn around time would be.

  • Brian Park: July 21, 2020

    I have a sondors electric thin bike w/ 350 motor, 36 volt 10 amp controller.

    What is your best battery and price I can buy.

    And how much can I improve the controller?

  • EBike Marketplace: July 07, 2020

    @Emmanuel – You can try contacting Sondors directly or drill the lock out yourself.

  • Emmanuel: July 07, 2020

    Please i leave here in europe and i have a sondors xl electric fat bike, my son have lost the key to the battery and it is almost impossible to get a lock smith here in europe and the battery is geting weak and i need a new battery but get the weak battery out and replace it with a new one is the problem i am facing. please is there any way out?

  • EBike Marketplace: January 15, 2020

    @Vincent – We can rebuild your existing battery if you send it in to us, but we do not stock replacement Sondors batteries.

  • Vincent Ferrara: January 15, 2020

    Have a sondors fold 36v ..630wh… 17.5ah…looking for a replacement battery….not sure how their sold..cells or whole case…please send me info and cost….Thank you

  • EBike Marketplace: October 21, 2019

    @Roger – Yes, you can convert the bikes to be either bullet or triangle as long as there is enough room. You just need to wire the + and – leads from the battery bracket to the controller. You can also charge the triangle battery when it’s not hooked up to the e-bike.

  • ROGER GEHRING: October 21, 2019

    Is it okay to charge the triange type battery
    when it is not hooked up to the bike? The charger will still tell me when it is almost charged.

  • Roger Gehring: October 21, 2019

    Have 2 SONDORS ebikes. 1 hastriangle batteryand 1 has the bullet type.I travel and wonder if 1 bike can be changed so both are either bullet or triangle. Have an extra bullet cradle if thaat make a difference.
    Thank you

  • EBike Marketplace: October 16, 2019

    @Quynh – Yes, we can rebuild your battery. Please send it in along with our Battery Intake Form.


  • Quynh Vuong: October 16, 2019

    I have a sondor mini fold with the long rectangular battery that no longer charges, the charger light stays green. is this something you can repair ? how can I start the process

  • EBike Marketplace: October 09, 2019

    @Steven – Send us some pictures of what you need and we’ll be glad to help you out.

  • Steven Castillo : October 09, 2019

    Need a charging Inlet for the battery or charging post adapter my charging post adapter is missing I have a sondors thin.
    8.7 ah battery

  • EBike Marketplace: September 24, 2019

    @James – Our current pricing for Sondors rebuild and upgrades can be found here:


Leave a comment

All blog comments are checked prior to publishing

Recent Posts