The Bafang BT F040.B360.C is a battery pack with a 36 V nominal pack, 21700 cells and an expected life of 600 cycles with 70% capacity remaining.
Last updated: 6 September 2026
Battery and charging
- Voltage
- 36 V nominal
- Rated capacity
9.5 Ah
BF-UM-C-BT F040-EN.pdf · retrieved by us 4 September 2026
“Model:BT F040.B360.C Capacity:9.5Ah Energy:342Wh”
Source: bafang-e.com/uploaded/manual/BF-UM-C-BT F040-EN.pdf
BT F040.B360.C.pdf · retrieved by us 4 September 2026
“Ratings: 36V,9.5Ah,360W”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
10 Ah
BAFANG_Workbook_OEM_2027_EN.pdf · retrieved by us 4 September 2026
“Rated Capacity (Ah) 10”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
- Battery energy
342 Wh — or 360, depending which document
BF-UM-C-BT F040-EN.pdf · retrieved by us 4 September 2026
“Model:BT F040.B360.C Capacity:9.5Ah Energy:342Wh”
Source: bafang-e.com/uploaded/manual/BF-UM-C-BT F040-EN.pdf
360 Wh
BAFANG_Workbook_OEM_2027_EN.pdf · retrieved by us 4 September 2026
“Energy (Wh) 360”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
- Cell format
- 21700 cells
- Charger current
- 2A
- Expected cycle life
- 600 cycles with 70% capacity remaining
- Least capacity declared
- At least 9.5 Ah
- Power when nearly empty and nearly full
- 70 W at 20% SOC, 280 W at 80% SOC
- Internal resistance
- No more than 160 mΩ
- Charges to
- 42V, cutting off at 200 mA
- Treated as empty at
- 27 V
- Power to energy ratio
- 175%
“Nominal Voltage (Vdc) 36”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
The maker’s own documents give different figures
The maker’s own documents give different figures
“CELL 21700”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Charger 2A”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“Expected life-time in cycle-life 600 cycles or above 2.5 years using The remaining capacity is above 70% to rated capacity after 600 times charge-discharge cycles is conducted. Test method:20 cycles every month ,2.5 years.”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“Rated capacity(Ah) 9.5 Ah or above”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“Power(W) 70 W at 20% SOC, 280 W at 80% SOC”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“Internal resistance (mΩ) ≤160 mΩ”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“Charge:Constant Current Constant Voltage mode, 42V,2 A, Cut off at 200 mA”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“Discharged: Constant Current mode, 2 A, Cutoff at 27 V”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“280 W at 80% SOC. 175%”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
Size and fit
- Length
- Either 516 or 448.5 mm — Bafang do not say which
- Width
- 48.5 mm
- Height
- 48.5 mm
Unconfirmed
“L (mm) 516 / 448.5”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“W (mm) 48.5”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
“H (mm) 48.5”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Compatibility
- Removing type
- Bottom
“Removing Type Bottom”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Certification claims
- EU battery declaration
- Declared under the EU Batteries Regulation
- Certification claimed by the manufacturer
- IP X6 / UN38.3 / MSDS / CE / ISO13849 / EN50604
“Technical Documentation for Performance and Durability Requirements Light Means of Transport Battery According to Article 10 of (EU) 2023/1542”
Source: bafang-e.com/Uploaded/Labels/BT F040.B360.C.pdf
“Tests & Certifications IP X6 / UN38.3 / MSDS / CE / ISO13849 / EN50604”
Source: bafang-e.com/Uploaded/Labels/BAFANG_Workbook_OEM_2027_EN.pdf
Product identifiers
The codes printed on the product and its packaging.
- Model code
- BT F040.B360.C
Source: bafang-e.com/en/oem-area/components/component/battery/bt-f040b360c
BT F040.B360.C Specifications Dimensions / Size Specifications Nominal Voltage (Vdc) 36 Energy (Wh) 360 Rated Capacity (Ah) 10 Cell 21700 Charger 2A Matching Parameter Removing type Bottom Tests & CerThe manufacturer's own designation for this model, usually printed on the frame or in the manual. It does not change between colours.
Bikes — none listed
No sourced compatibility evidence is on file for this battery yet.