===== Ninebot battery SN anatomy =====
[[https://i.imgur.com/mOi3bin.png|Visual diagram]]
Example SN: **4WWEQ20D5C0420**
* **Gray -**Compatible model
* **Purple -**Version/Edition
* **Yellow -**Manufacturing line at the factory
* **Green - **Year of production
* **Black - **Month of production
* **Blue -**Day of production
* **Red - **Product revision
* **Orange -**Unique unit ID
==== Compatible model ====
**4 - **Represents a battery compatible with the Ninebot E/ES series scooters.
**5 - **Represents a battery compatible with the Ninebot Max series scooters.
**6 - **Represents a Ninebot Max battery used in non-foldable rental units.
==== Version ====
If the version ID starts with a **W**, then it's a **external **battery on an ES, or an intenal on a MAX.
If the version ID starts with a **V**, then it's a **internal **battery on the ES.
==== Year of production ====
Represents the year in which a battery was made. 20 - 2020, 19 - 2019 etc.
==== Month of production ====
Represents a month in which a battery was made.
**A**
- January, **B **- February **C **- March **D **- April **E **- May **F **- June
**G **- July **H **- August **I **- September **J**** **- October **K **- November **L **- December
==== Day of production ====
Represents a day in which a battery was made.
^ Day ^ Character in the SN |
| **1** | **1** |
| **2** | **2** |
| **3** | **3** |
| **4** | **4** |
| **5** | **5** |
| **6** | **6** |
| **7** | **7** |
| **8** | **8** |
| **9** | **9** |
| **10** | **A** |
| **11** | **B** |
| **12** | **C** |
| **13** | **D** |
| **14** | **E** |
| **15** | **F** |
| **16** | **G** |
| **17** | **H** |
| **18** | **I** |
| **19** | **J** |
| **20** | **K** |
| **21** | **L** |
| **22** | **M** |
| **23** | **N** |
| **24** | **O** |
| **25** | **P** |
| **26** | **Q** |
| **27** | **R** |
| **28** | **S** |
| **29** | **T** |
| **30** | **U** |
| **31** | **V** |
\\
==== Product revision ====
Represents the battery revision. **A **represents rev. 1, **B **represents rev. 2, **C **rev. 3 etc.
==== Unique unit ID ====
Incremental counter identifying every battery made each day.
For example 123 means the 123rd battery made on a particular day.
\\