⚙ CircuitSecrets
Battery Calculator Dashboard
Complete engineering suite for battery sizing, backup time, charging, SoC, C-rate, efficiency, and Peukert's Law calculations.
Calculator 01
Battery Backup Time
T = (Ah × V × DoD × η) / Load_W [hours]
Calculation Results
Backup Time
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Usable Energy
—
Actual DoD
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End Voltage
—
Usable Capacity
Calculator 02
Battery Bank Sizing
Ah = (Load_W × T × 1000) / (V_bank × DoD × η) | Batteries = Ah / Ah_per_bat
Calculation Results
Total Ah Needed
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Total kWh
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No. of Batteries
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Series × Parallel
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Calculator 03
Battery Charging Time
T = (Ah × (1 − SoC%) × 1.1) / I_charger [hours]
Calculation Results
Charge Time
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Energy to Add
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Charger Power
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C-Rate
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Calculator 04
State of Charge (SoC)
SoC% = (V − V_min) / (V_max − V_min) × 100 | SoC% = (1 − Ah_used/Ah_total) × 100
Calculation Results
SoC % (Voltage)
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SoC % (Ah)
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Remaining Ah
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Condition
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Battery Level
Calculator 05
C-Rate & Discharge Current
I = C-rate × Capacity_Ah | T = 1 / C-rate [hours] | Power = I × V
Calculation Results
C-Rate
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Current (A)
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Discharge Time
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Power (W)
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Temp Derating
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Eff. Capacity
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Energy (Wh)
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Calculator 06
Series & Parallel Configuration
V_bank = V_cell × N_series | Ah_bank = Ah_cell × N_parallel | kWh = V×Ah/1000
Calculation Results
Bank Voltage
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Bank Ah
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Total kWh
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Total Batteries
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Max Charge V
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Bank Int. R (mΩ)
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Configuration
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Calculator 07
UPS Battery Sizing
Ah = (kVA × PF × T × 1000) / (V_bus × DoD × η) | Cells = Ah / Cell_Ah
Calculation Results
Load (kW)
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Ah Required
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No. of Cells
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Series / Parallel
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Calculator 08
Battery Efficiency & Losses
RTE% = (Ah_out × V_avg_dis) / (Ah_in × V_avg_chg) × 100 | Loss = Input − Output
Calculation Results
Round-Trip Eff.
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Energy Lost
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Voltage Eff.
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Battery Health
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Cycles Used
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Remaining Life
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Estimated Years
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Calculator 09
Solar + Battery Storage
Excess = Solar_gen − Load | Storage = Excess / (DoD × η) | Deficit → Grid/backup
Calculation Results
Excess Solar
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Storage Needed
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Batteries Needed
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Grid Deficit
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Solar Coverage of Load
Calculator 10
Battery All-in-One Summary
Full system snapshot: Connected load → Required Ah → Batteries → Backup time → Charging → Health
Calculation Results
Total Ah Needed
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No. of Batteries
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Bank kWh
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Backup Time
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Charge Time
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Series × Parallel
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C-Rate
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Daily Energy Cost
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Est. Cycle Life
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Recommendation
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Backup Coverage
Calculator 11
Peukert's Law Calculator
T = H × (C / (I × H))^k | Effective Capacity = I × T
Calculation Results
Real Discharge Time
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Effective Capacity
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Capacity Loss
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Data Management
Saved Setups (Update / Edit)
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