# Battery & EV Charge Time Calculator

> Calculate charge time, finish time, and costs for EVs and batteries - with charge curve and live tracking.

- Open in browser: https://pockettoolbox.org/en/battery-charge-calculator
- Runs entirely in your browser; files and input are never uploaded.

## How it works

Interactive charging time calculator for electric vehicles, home storage, and batteries, factoring in efficiency losses, SoC ranges, and scheduled start times.

Calculates required energy (net/gross in kWh), duration factoring in efficiency, estimated completion time, electricity costs, and added driving range. Features real-time charge tracking, calendar reminders, and shareable links. Note: All calculations including costs and durations are approximate estimates and may deviate from real-world charging due to ambient temperature, battery preconditioning, and vehicle charging curves.

Net energy: ΔE = Capacity × (Target-SoC - Start-SoC) / 100. Gross energy: E_gross = ΔE / Efficiency. Charge time: t = E_gross / Power. When curve tapering is enabled, power above 80% SoC is gradually reduced (lithium-ion BMS cell protection).

## Popular tasks

- [EV Charging Time Calculator](https://pockettoolbox.org/en/ev-charging-time-calculator)

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PocketToolbox (https://pockettoolbox.org/en)