EV Intelligence
ECARGYAN.
Search
Charging & Power Deterministic Model v1.2

Home EV Charging Calculator

Calculate domestic overnight charging expenses, grid draw, and session time.

Residential Charging Setup

Configure home power connection & tariffs
kWh
30%
90%
kW
₹ / kWh
88%
Home Session Charging Cost ₹185.94 Approx. 8h 40m overnight duration
Battery Energy Added: 25.20 kWh
Grid Energy Billed: 28.64 kWh
Charger Power: 3.3 kW (16A)
🌙

Overnight charging at 3.3 kW easily replenishes 25 kWh (approx. 175 km range) while sleeping.

Mathematical Formula & Physical Model

Separates battery energy added from grid electricity drawn through domestic AC wallboxes, factoring in onboard charger efficiency.

1 Battery Energy Added (kWh) = Pack Capacity × ((Target SOC - Current SOC) / 100)
2 Grid Energy Consumed (kWh) = Battery Energy Added / (Charging Efficiency / 100)
3 Total Home Cost = Grid Energy Consumed × Domestic Tariff Rate
4 Session Time = Battery Energy Added / (Charger Power × Efficiency)

Worked Example

Reference Benchmark

Overnight 3.3 kW AC 16A Plug Session

Charging 25 kWh into a battery pack from 30% to 90% SOC on a 3.3 kW portable domestic socket at ₹6.50/kWh with 88% efficiency.

Battery Capacity 42 kWh
Current SOC 30%
Target SOC 90%
Charger Power 3.3 kW
Domestic Tariff ₹6.50 / kWh
Efficiency 88%
Computed Result: ₹185.94 total session cost (28.64 kWh grid energy, approx. 8h 40m session time)

Frequently Asked Questions

Can I charge an EV safely using a standard 16A domestic wall socket?

Yes, Level 1 charging at 2.3 kW to 3.3 kW is safe when using a dedicated industrial 16A circuit with proper earthing (grounding) and an MCB rated for continuous load.

Is installing a 7.4 kW home wallbox worth the upgrade?

A dedicated 7.4 kW Level 2 wallbox reduces charging time by more than half compared to a 3.3 kW socket and incorporates built-in dynamic load balancing and safety isolation.

View All Tools →