Recent content by Fire_Safety

Dear @Stefan Mikes To keep it simple KOH was mentioned as an illustrative example of electrolyte, it is a common one used in several battery chemistries. You are correct most electrolyte in lithium ion cells use organic solvents and are highly flammable.

Dear @Urbancowboy There are 5 basic "ingredients" to any lithium cell: Lithium (may be mixed with other elements such as Cobalt and Oxygen, known as LCO chemistry), Separator (made from plastic and commonly coated with ceramic), Electrolyte (Potassium Hydroxide, KOH, is a common one used)...

As I have mentioned in other posts in EBR forums, it's critical that the full electrical system be safety certified to UL 2849 to reduce the risk of fire and explosion. Just having a battery pack to UL 2271 is not sufficient to address the safety of the full electrical system. Often times...

Thank you Dewey for your explanation. Advocating for the American National Standard Institute’s accredited United States safety standards should be clear as to why that would be in USA Citizens best interest. Otherwise why even have national consensus standards that take years to reach...

Dear Dewey, Have you studied the EN and UL standards? If not how would you know what’s actually addressing the product safety of an e-bike or its battery? Many of the fires from e-bikes around USA or globally are from EN compliant e-bikes. EN ebike and related standards are not as robust as...

I can confirm the battery charger is UL Solutions certified and certification record can be found here: https://iq.ulprospector.com/en/profile?e=4787040 (if you are logged into the free system this link will work) or here https://productiq.ulprospector.com/en/profile/4787040/qqjq.e518934 (no...

@Ebiker33 as a safety engineer of UL Solutions for close to 19 years and having been involved with battery safety for 10+years, for the most part I agree with the above "what is involved" for UL 2271. However, keep in mind UL 2271 does a lot more than test battery packs, it assesses the...

@Urbancowboy do you have any pictures of the charger marking label or to link to it for sale online? Is it safety certified? And how about your e-bike is it safety certified as well? Please note poor components and materials within a battery charger, e-bike electrical system, battery pack...

So for the Bafang supplied battery charger I recommend reporting to saferproducts.gov so the consumer product safety commission can look into it directly. For the replacement charger, I can not comment on what to replace, as part of an independent third party certification company I can not...

This is what Bafang gave? Can you take a photo of any other markings on the other side of the charger? All the markings in the photo sent are self-declared and not issued by an independent 3rd party. If there is no safety certification of the charger, recommend that you do not use it.

Unfortunately I was unable to locate a certification record to UL 2849 safety standard for the overall kit and will have a member of UL Solutions reach out to their HQ to discuss since they do have other products that are UL certified. As others earlier stated only use the charger specified by...

Can you send the link of the system your sister purchased? Let us first verify if it’s a safety certified e-bike system.

Please do not mix and match chargers, battery packs, e-motors, or control circuits. If the system has not been designed with safety, it's a recipe for thermal runaway. This infographic may be helpful to EBR users to explain what goes into evaluating, testing, and certifying an e-bike...

Dear @TerryV6 please do not use any e-bike and it's related components that is not safety certified. And if it is safety certified, any field event can be reported to the certification company to investigate the manufacturer. Please ensure the system is certified. Just NYC has had 2 dozen...

Almost one year ago to the day @Art Deco was correct that there were less than a dozen companies who were UL Solutions e-Bike certified. That list is now 40+ companies. It has been a lot of work by the e-bike industry in the past year and very proud of the commitment all have had to ensure safe...