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36V 10.4Ah(374Wh)/12.8Ah(473Wh) SF-03 JCEB360-11 QY-03 rear rack e-bike battery. Default with standard BMS. Smart communication BMS customizable for bulk orders. Fits Puch, DHS, Bianchi, Fischer Proline, Chrisson pedelecs.
This SF-03 JCEB360-11 rear carrier battery is a replacement pack for many European city pedelecs. QY-03 is our internal replacement model number for this battery, not the original Joycube factory part number.
Available in two capacity options: 10.4Ah (374Wh) and 12.8Ah (473Wh). Rear rack mount design with integrated rear taillight, same housing dimension as the original pack.
✅ Puch Radius Luxury
✅ DHS Primas Éco
✅ Bianchi E-Bikes
✅ Fischer Proline
✅ Chrisson E-Bikes
Note: This shell model was also used on e-bikes with Ananda-Antriebe drive system, but two different BMS versions exist for this battery shell: standard non-communication BMS and smart communication BMS. Physical matching does not guarantee compatibility.
| Parameter | Value |
|---|---|
| Nominal Voltage | 36V |
| Full Charge Voltage | 42V |
| End Discharge Voltage | 28V |
| Capacity Option 1 | 10.4Ah (374Wh) |
| Capacity Option 2 | 12.8Ah (473Wh) |
| Cell Type | INR-18650-2600mAh / INR-18650-3200mAh |
| Dimensions | 366 × 149 × 63 mm |
| Weight | Approx. 2.5kg |
| Cycle Life | 1000+ cycles |
| Standard Discharge Current | 10A |
| Max Continuous Current | 20A |
| Protection Current | 50A |
| Standard Charge Current | 2A |
| Max Supported Motor | 36V 500W |
| Model | SF-03, JCEB360-11, Internal replacement code: QY-03 |
| Mount Type | Rear Rack Mount |
| Built-in Feature | Integrated rear taillight, power indicator |
| Holder | Not included |
| Charger | Included |
| Default BMS | Standard BMS (No communication handshake) |
1 × SF-03 / QY-03 E-bike Rear Battery
1 × 42V Charger
(Battery holder is NOT included)
✅ Two capacity versions available: 10.4Ah 374Wh and 12.8Ah 473Wh, select according to your original battery.
✅ Original SF-03 shell dimension 366×149×63mm, perfect physical fit for matching rear rack pedelecs, integrated rear taillight for riding safety.
✅ Grade A 18650 lithium cells, service life over 1000 charge cycles, stable and consistent output.
✅ Multi-protection BMS: overcharge, over-discharge, over-current, short-circuit and temperature protection.
✅ Removable design, easy to detach and charge indoors, charger included in package.
✅ Bulk custom service: we can pre-flash matched communication firmware for smart BMS requirement on batch orders.
⚠️ Critical BMS Reminder
This battery is equipped with standard BMS by default, without communication handshake function.
If your original battery is the smart version with communication BMS, please provide full information of your original battery so we can confirm the exact communication protocol. Custom compatible communication firmware is available for bulk orders.
This identical SF-03 shell is used on multiple drive systems. Physically fitting the housing and connector does NOT guarantee normal pedal assist.
It will NOT work for Bosch, Bafang or other unrelated drive systems unless we customize the BMS protocol for you.
Minor color difference may exist due to lighting and screen display. Dimension tolerance ±1~3mm.
We specialize in mid-drive motors and e-bike parts. Strict testing, powerful R&D and flexible OEM service guarantee long-term cooperation.
It used to take me weeks to hunt down hard‑to‑find e‑bike spare parts. Their compatibility‑check technical support saved me countless repair headaches. Reliable supplier I can always count on.
For more FAQs and further details, please get in touch with us
We supply genuine OEM parts and premium compatible aftermarket replacement parts for e-bikes, including motor components, controllers, throttles, PAS sensors, wiring harnesses, connectors and Bosch form-factor batteries.
We serve mainstream drive system manufacturers: Ananda, Bafang, Aikema, Tongsheng, Shengyi, Bosch and more. We also provide repair components for complete e-bike brands including Sur‑Ron, Aventon, Trek and many others.
All items are brand-new and inspected before shipment. We do not supply second-hand or refurbished goods.
Our team verifies compatibility according to your bike model, motor info or original part photos. We confirm available OEM parts or recommend workable alternative solutions.
Yes. Flexible order sizes are supported, ranging from single spare parts to bulk purchases.
Sea freight, air freight and rail transport are optional.
Lead time varies by item and shipping mode. We confirm exact timelines before each order and share tracking updates.
We provide part identification, model matching and full order follow-up support.
