Faraday Owner
New here
Hi everyone,
I have a Faraday Porteur e-bike with what appears to be an aged-out original battery. It powers the bike briefly, but assist only works for about 30 seconds before cutting out, so I’m looking for someone who can properly diagnose and repair/rebuild/replace the battery system.
This is not a standard modern plug-and-play e-bike battery. From the Faraday documentation and teardown info I’ve found, the original battery is an in-downtube lithium pack, approximately 44V nominal / 12S2P / 306Wh / 6.9Ah, with battery-control electronics/BMS inside the pack. The battery sits inside the downtube and requires some bike disassembly to access.
I’m open to a few possible solutions:
1. Rebuilding the original Faraday battery with new quality cells, if the original BMS/control electronics can be retained or repaired.
2. Replacing it with a compatible same-voltage battery solution, if it can be done safely and cleanly.
3. Building a custom battery solution that preserves the bike as much as possible and does not create a fire/safety risk.
4. Diagnosing whether the failure is definitely the battery versus controller/BMS/communication issue.
Useful references:
- Faraday hardware teardown / battery notes: Open Sourcing Faraday Hardware: Dane Kouttron
- Similar Faraday repair thread: SOLVED! Faraday Help Please
I’m located in Ottawa but would consider someone in Ottawa, Montreal, Toronto, or nearby if they have the right experience.
I’m specifically looking for someone who has real experience with lithium e-bike battery packs, 18650/21700 cell rebuilds, BMS diagnosis, spot-welding, and legacy/proprietary e-bike systems. I’m not looking for a quick unsafe hack.
Please message me if you can do this work, or if you know a shop, electronics tech, battery rebuilder, or experienced hobbyist who has handled similar custom e-bike battery repairs.
Thanks.
I have a Faraday Porteur e-bike with what appears to be an aged-out original battery. It powers the bike briefly, but assist only works for about 30 seconds before cutting out, so I’m looking for someone who can properly diagnose and repair/rebuild/replace the battery system.
This is not a standard modern plug-and-play e-bike battery. From the Faraday documentation and teardown info I’ve found, the original battery is an in-downtube lithium pack, approximately 44V nominal / 12S2P / 306Wh / 6.9Ah, with battery-control electronics/BMS inside the pack. The battery sits inside the downtube and requires some bike disassembly to access.
I’m open to a few possible solutions:
1. Rebuilding the original Faraday battery with new quality cells, if the original BMS/control electronics can be retained or repaired.
2. Replacing it with a compatible same-voltage battery solution, if it can be done safely and cleanly.
3. Building a custom battery solution that preserves the bike as much as possible and does not create a fire/safety risk.
4. Diagnosing whether the failure is definitely the battery versus controller/BMS/communication issue.
Useful references:
- Faraday hardware teardown / battery notes: Open Sourcing Faraday Hardware: Dane Kouttron
- Similar Faraday repair thread: SOLVED! Faraday Help Please
I’m located in Ottawa but would consider someone in Ottawa, Montreal, Toronto, or nearby if they have the right experience.
I’m specifically looking for someone who has real experience with lithium e-bike battery packs, 18650/21700 cell rebuilds, BMS diagnosis, spot-welding, and legacy/proprietary e-bike systems. I’m not looking for a quick unsafe hack.
Please message me if you can do this work, or if you know a shop, electronics tech, battery rebuilder, or experienced hobbyist who has handled similar custom e-bike battery repairs.
Thanks.
