Search results

  1. Ravi Kempaiah

    NYT article on ebike battery fires

    You don't need to be charging to get these cells going! Fast discharge, shoddy electronics in the BMS, and complex discharge in cold climates can trigger adverse reactions and this will snowball into thermal runaway if there are no safety measures in place within the pack. We have taken apart...
  2. Ravi Kempaiah

    NYT article on ebike battery fires

    People underestimate the value of properly engineered batteries until something tragic happens. An E-bike battery led to a fire in a Toronto sub-way car and incidents like this should be taken seriously. I hope more OEMs and end users realize how important it is to select high-quality batteries...
  3. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Hi Taylor, It is $2999 (USD) shipped to Palm Springs, CA - customers who pre-order by Jan 31st get this at $2999. The prices are expected to increase after that date.
  4. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    We will walk you through the Photon pro display and how we have implemented the smart charging functionality. This is the default display screen. You enter the settings menu by pressing the + and - button simultaneously. Under Advanced Settings, you see BAT MODE (short form for Battery...
  5. Ravi Kempaiah

    Yamaha charging $2475.00 for a battery

    If there is enough interest in these batteries, we will work on this and make replacement batteries available. There is a growing need for quality batteries that don't cost an arm and leg, and having UL certification should not mean it should cost $1500, either.
  6. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Thanks. We have already updated it. We had to work with several electronic vendors to make it happen - display, controller, BMS supplier etc. and the image shown here is from our design prototype.
  7. Ravi Kempaiah

    2024 - Our Rides in Words, Photos, Maps and Videos

    Thanks for sharing your excellent report and looks like you are an outlier because -20'C is quite cold even for experienced riders.
  8. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    The BMS has smart charging features; without going into boring technical details, we designed the BMS and the battery pack to have several safety features and UL 2271 certification, and built-in charging protocol for two different modes. Long-life mode, where it charges to 80% and balances the...
  9. Ravi Kempaiah

    I pulled the trigger: Zen Photon

    Greatly appreciate your business and support. We will be updating the EBR community on Photon assembly in the next 10 days. Without going into boring technical details, we designed the BMS and the battery pack to have several safety features and UL 2271 certification. This was a lengthy process...
  10. Ravi Kempaiah

    Battery Swapping coming for Emotorcycles

    This is a very nascent industry, and there is no standardization as of yet. There are two schools of thought: One is B2B fleets would much prefer to use swappable batteries, and non-business consumers would not like to share the battery of their new vehicle. Since E-mopeds are taking off in...
  11. Ravi Kempaiah

    Battery Swapping coming for Emotorcycles

    This is already happening in India on a big scale. Most of the food and cargo delivery is switching to electric 2-wheelers and 3-wheelers. Take a look.
  12. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Would it be possible to share some pictures of the fixture you made? We will work on ensuring compatibility with Topeak and MIK racks.
  13. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    This week, our team optimized the packaging to minimize shipping-related damages. Except for the local deliveries, all shipments will have packaging like this. We are track for the frames to ship by the end of the month. The wheels and Enviolo IGH are already built in Canada and ready to be...
  14. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Photon Ultra wheel with Rohloff hub on the assembly line for those who requested the "Ultra" option.
  15. Ravi Kempaiah

    Exploring Zen Electric Bikes' Advanced Battery Technology

    Samurai uses Bosch batteries and Bosch does not allow other batteries to work with their motor. The battery rendering we showed here is not ready for mass production yet. Photon batteries are already designed and have gone through the UL-certification. When we do bring the latest batteries to...
  16. Ravi Kempaiah

    ST7 WREN susp : sag and total travel?

    Very nice! Congratulations on your new bike. How do you like it compared to the ST2 and ST5 bikes you have owned previously?
  17. Ravi Kempaiah

    Exploring Zen Electric Bikes' Advanced Battery Technology

    Thank you very much. Well noted on several points. USB-C charging will be quite beneficial and we will seriously consider it. It's funny you mention about the unique ID and we have been working on that for our work in light electric vehicle batteries in Asia and Africa. This is something we...
  18. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    There is NO California tax because of the Canada - USA free trade agreement. The throttle response is smooth and not too overpowering. We have tuned the pedal assist to be quite powerful, so you may find that much more pleasant compared to the throttle.
  19. Ravi Kempaiah

    Exploring Zen Electric Bikes' Advanced Battery Technology

    We are very interested in hearing from the community about what makes a great E-bike battery. From safety to charging to connectors.... there are several important metrics and we want to hear real perspectives from E-bike riders so we can advance the innovation and safety in E-bike batteries...
  20. Ravi Kempaiah

    Bafang's Proprietary Battery Port?

    In your battery, the third pin is used as ground and the two main pins are rated for 5A charge current. Just the extension cables for your smart charger right? I have asked our service team to reach out to you today.
Back