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Calcimator

Charge Time Calculator

Calculate hours to fully charge a battery from charger power and efficiency.

Inputs

kWh
%
%
kW
%

Results

Charge Time

5.93 hrs

Charge Time

356 min

Energy to Add48 kWh
Energy from Grid52.17 kWh
Charging Losses4.17 kWh
How to Use This Calculator
  1. Enter Battery Capacity, Current SOC, and Target SOC.
  2. Set Charger Power and Charger Efficiency.
  3. Review Charge Time (hrs) and Charge Time (min).
  4. Use Energy to Add (kWh) and Energy from Grid (kWh) to inform your decision.

How the result changes with Target SOC

Target SOCCharge TimeCharge Time
11-0.53 hrs-32 min
360.95 hrs57 min
652.67 hrs160 min
904.74 hrs285 min

What each input means

Battery Capacity
Total battery capacity.
Current SOC
Current state of charge.
Target SOC
Desired state of charge.
Charger Power
Charger output power rating.
Charger Efficiency
Charger conversion efficiency.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Battery Capacity = 60, Current SOC = 20, Target SOC = 100, Charger Power = 11 = 5 input(s) provided
  2. Calculate Charge Time
    Charge Time
    5.93 = 5.93
  3. Calculate Charge Time
    Charge Time
    356 = 356
  4. Calculate Energy to Add
    Energy to Add
    48 = 48
  5. Calculate Energy from Grid
    Energy from Grid
    52.17 = 52.17

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