Battery Pack Sizing Online Calculator For Electric Vehicles

Hey guys, welcome back to our website. Here you will get a battery pack sizing online calculator for electric vehicles, this battery pack sizing online calculator will estimate the number of cells to be connected in series and parallel, and the battery pack discharging time.

If you have any electrical, electronics, and computer science doubts, ask questions. You can also catch me on Instagram – CS Electrical & Electronics

Battery Pack Sizing Online Calculator

Types Of Cell With Cell Nominal Voltage

Common Chemistries	Cell Voltage (Nominal)
Silver Oxide	1.55V
Lithium (Primary)	3.0V
Li-Ion (Lithium Ion)	3.6V / 3.7V
LiFePO4 (Lithium Phosphate)	3.2V
Ni-MH (Nickel Metal Hydride)	1.2V
Ni-CD (Nickel Cadmium)	1.2V
Alkaline	1.5V

Based on your chemistry you can enter your cell nominal voltage and rated capacity per cell. In the above battery sizing online calculator:

• Load voltage may be anything like motor voltage or resistive load voltage.
• The load current is the amount of current load is consuming.
• The rated capacity of the battery pack is the current it delivers for one hour. This means that a battery with a rating of 300 Ah can deliver 300 amps of power at a constant rate for 1 hour.
• Voltage per cell means the nominal voltage of one cell in the pack.
• Rated capacity per cell means the current one cell delivers for one hour. This means that a cell with a rating of 2.6Ah can deliver 2.6 amps of power at a constant rate for 1 hour.
• A battery’s C Rating is specified by the rate of the period in which it carries to charge or discharge. You can raise or decrease the C Rate and as a result, this will impact the period it takes the battery to discharge or charge. The C Rate discharge or charge time shifts with respect to the rating. 1C is equivalent to 60 minutes, 0.5C to 120 minutes, a 2C rating is equivalent to 30 minutes, and just things you can read from the above table.

C rate for different hours

C Ratings	Time
30 C rate	2 minutes
20 C rate	3 minutes
10 C rate	6 minutes
5 C rate	12 minutes
2 C rate	30 minutes
1 C rate	1 hour
0.5 C rate or C/2	2 hours
0.2 C rate or C/5	5 hours
0.1 C rate or C/10	10 hours
0.05 C rate or C/20	20 hours

Calculations

• Load voltage: 200 volts
• Load current: 50 amps
• Rated capacity of battery pack: 300 Ah
• Voltage per cell: 3.7 volts
• Rated capacity per cell: 2.6

01. Number Of Cells In Series: 200 / 3.7 = 54 cells in series

=> Load voltage / Voltage per cell

02. Number Of Cells In Parallel: 300 / 2.6 = 115 cells in parallel

=> Rated capacity of battery pack / Rated capacity per cell

03. Discharging Time in minutes (t): (300 * 60) / 50 = 360 minutes

(Rated capacity of battery pack * 60) / Load current

04. Discharging time in hours (t): 360 min / 60 = 6 hrs

Discharging Time in minutes / 60

05. Battery C Rate: 60 / 360 min = 0.16 C rating

60 / Discharging Time in minutes

I hope you people enjoyed this “Battery Pack Sizing Online Calculator”. Thank you for visiting.

Also, use:

• Battery C Rate Online Calculator With Time Calculation
• Battery Pack Sizing Online Calculator For Electric Vehicles
• Voltage Divider Online Calculator