The BYD FC4680P cell is a Lithium Iron Phosphate chemistry in the Tesla 4680 cell format.
4680 => 46mm in diameter and 80mm high
A small plug in the top is described as an “explosion proof valve”.
Independently measured values shown in bold
Key features
- LFP
- Gravimetric energy density = 129Wh/kg (measured at 147 Wh/kg)
- Volumetric energy density = 350Wh/litre (measured at 370 Wh/L)
- Nominal Capacity = 15Ah (0.5C charge / 0.2C discharge)
- Typical capacity = 15.3Ah
- Measured capacity = 15.3 Ah (CCCV 5A to 3.65 V, 0.25 A cutoff, 5A discharge to 2.8 V)
- Nominal Voltage = 3.2V
- Nominal Energy = 48Wh (measured at 49.2 Wh)
- Maximum voltage = 3.65V
- Cutoff voltage = 2.0V
- Maximum continuous discharge = 45A
- Maximum charge = 15A
- Operating temperature range
- Charge = 0°C to 55°C
- Discharge = -20°C to 60°C
- Storage temperature range = 1 year at -20°C to 25°C
- Cycle life = 2000 cycles to 80% SoH at 1C/1C and room temperature
Dimensions
- Diameter = 46.3 +/-0.25mm
- Height = 80.2 +/-0.3mm
- Mass = 0.335kg
Safety Data
Data as shown on manufacturers specification sheet.
| Test | Result | Comments |
|---|---|---|
| External Short Circuit | No explode, No fire | |
| Overcharge | No explode, No fire | |
| Forced Discharge | No explode, No fire | |
| Crush | | |
| Impact | | |
| Shock | | |
| Vibration | No leakage, No fire | explosion proof valve does not open |
| Temperature Cycling | | |
| Low Pressure | Liquid tight, No fire | explosion proof valve does not open |
| Nail Penetration | | |
| External Heat | | |
| Drop | No leakage, No fire | |
This post has been built based on the support and sponsorship from: Eatron Technologies, About:Energy, AVANT Future Mobility, Quarto Technical Services, TAE Power Solutions and The Limiting Factor.
Future Roadmap
BYD’s FinDreams roadmap for this cell shows that it is not a one off cell where they are playing with LFP chemistry in the 4680 format.
