Click on each tab to open or close, hover over 💡 for hints.
The default values are for a 14S8P pack of Sony 18650 "VTC6" cells
💡 Nickel: 0.07Ω*m, Steel: 0.13Ω*m
Specific Resistance Ω*m
💡 Nickel: 8.9g/cm³; Steel: 8g/cm³
Density of strip material g/cm³
💡 Most Cells (18650 and 21700 have around 800 to 1000 J/kg*K)
Heat Capacity of Cell J/kg*K
💡 Nickel and Steel have roughly the same 430 J/kg*K
Heat Capacity of Strip Material J/kg*K
Pack Setup: S P

💡 Good source for this data: See link at bottom of page.
Just "ctrl-f" and search for your battery.
Cell weight: g
💡 Good source for this data: See link at bottom of page.
Just "ctrl-f" and search for your battery.
Note: Resistance needs to be converted to mΩ, e.g. 0,03Ω = 30mΩ
Typical values between 20mΩ and 60mΩ.
Cell internal resistance: mΩ

💡 18650: 18mm, 21700: 21mm, or custom
Distance between cells: mm

💡 Supported strips: See link at bottom of page.
"Web" means the individual connections between the cells, usually 7 to 8mm
If you use individual strips, use their width
Web thickness: mm
Strip thickness: mm

Average current: A ( kW)
Peak current: A ( kW)

💡 Usually, high current is only needed for starting. For foiling, current is less.
The duration is how long the peak current is consumed.
This is needed only for thermal simulation.
Peak current duration: Seconds
💡 This is the equivalent area of conductor in series with the current flow.
So the area between the P-groups
Area between groups:
mm²

💡 This is the equivalent resitance from one P-group to the next.
Resistance between groups:
mΩ

💡 This is the weight of all strips combined for the whole pack.
Total Strip Weight:
g
💡 This is the weight of all cells together.
Total Cell Weight:
g

💡 This is the resistance of all strips in the whole pack.
Total Strip Resistance:
mΩ
💡 This is the resistance of all cells in the whole pack.
Total Cell Resistance:
mΩ
At average current:
💡 The power lost / dissipated in the strips at average current consumption.
Power Loss Strip:
W
💡 The power lost / dissipated in the cells at average current consumption.
Power Loss Cells:
W

At peak current:
💡 The power lost / dissipated in the strips at peak current consumption.
Power Loss Strip:
W
💡 The power lost / dissipated in the cells at peak current consumption.
Power Loss Cells:
W
💡 The relation of powerloss in Cells vs Strip.
Power Loss Relation:
%

Temperature rise, by thermal mass, at peak current, after the duration
💡 Temperature rise of strips, at peak current, after the duration.
ΔT Strip:
K (°C)
💡 Temperature rise of cells, at peak current, after the duration.
ΔT Cells:
K (°C)

Temperature rise, by radiation, at peak current, at infinite duration
💡 Temperature rise of strips, according to ANSI formula for PCB trace temperatures, calculated as an external trace
ΔT Strip:
K (°C)

Links:
Cell Information: 18650 or 21700
Supported strips: LINK

Notice:
Please make sure you know what you are doing when building a battery pack!
The values of this calculator are only for educational purposes.
I take no responsibility for the packs you build!