# Home Energy Calculators – EV Charging Time, Cost & Range

> Home Energy Calculators – EV Charging Time, Cost & Range is a paid API for AI agents from home-energy-calc.x402tookit.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-29).

Calculates EV charging time, electricity cost, and range added from battery size, charge levels, charger power or circuit specs, and price per kWh.

## Facts

- Endpoint: GET https://home-energy-calc.x402tookit.com/ev-charging?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/home-energy-calculators-ev-charging-time-cost-range-dda09c8a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_DsBRRxw_AinYuwGM0igVg

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability home-energy-calculators-ev-charging-time-cost-range-dda09c8a
```

Example prompt: How long will it take to charge my EV from 20% to 90% with a 77 kWh battery on a Level 2 charger at 240V/32A, and what will it cost if electricity is $0.14 per kWh? My car gets about 4 miles per kWh — also tell me how much range I'll add.

## When to prefer this

Choose this endpoint when you need accurate EV charging calculations grounded in real electrical parameters (battery kWh, circuit amperage/voltage, charger kW) rather than rough app estimates. It is especially useful for home energy planning — comparing charger tiers, estimating overnight charge completion, or computing cost with block pricing. It supports both simple level-based inputs (level1/level2) and precise electrical circuit specs, making it suitable for both consumers and energy planning agents.

## Known failure modes

- Missing required parameters (batteryKwh, startPercent, endPercent) returns a validation error
- endPercent must be greater than startPercent; invalid range returns an error
- chargerKw, breakerAmps, or level must be specified for power; missing all three may cause degraded or null results
- Out-of-range values (e.g. batteryKwh > 300, efficiency outside 0.7–1) return validation errors
- pricePerKwh or milesPerKwh omitted causes cost or range fields to return null
- Conflicting power inputs (chargerKw + breakerAmps + level) may lead to ambiguous results

## How this service works

Electric vehicle charging time, cost and range added from battery size, charge levels, charger power or circuit, and price.

## Output

Returns a JSON object with charging time in hours and minutes, total electricity cost, energy added (net kWh), charging losses (kWh), charger power (kW), miles of range added (if efficiency provided), a plain-language summary, verdict, and any advisory reasons or warnings about the inputs.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "batteryKwh",
      "startPercent",
      "endPercent"
     ],
     "properties": {
      "level": {
       "type": "string",
       "description": "Or level1 (120 V, 12 A) or level2 (240 V, 32 A)"
      },
      "volts": {
       "type": "number",
       "description": "Circuit voltage with breakerAmps, 100 to 480 (default 240)"
      },
      "chargerKw": {
       "type": "number",
       "description": "Charger power in kW delivered to the car's charger, 0.5 to 400 (or use breakerAmps, or level)"
      },
      "batteryKwh": {
       "type": "number",
       "description": "Usable battery capacity in kWh, 5 to 300"
      },
      "endPercent": {
       "type": "number",
       "description": "State of charge wanted, 1 to 100 (above the start)"
      },
      "breakerAmps": {
       "type": "number",
       "description": "Or the circuit breaker size in amps; a continuous load may use 80% of it (voltage from volts, default 240)"
      },
      "milesPerKwh": {
       "type": "number",
       "description": "Vehicle efficiency in miles per kWh, 0.5 to 8, for range added"
      },
      "pricePerKwh": {
       "type": "number",
       "description": "Electricity price per kWh, for cost"
      },
      "startPercent": {
       "type": "number",
       "description": "State of charge at the start, 0 to 99"
      },
      "chargingEfficiency": {
       "type": "number",
       "description": "Wall-to-battery efficiency 0.7 to 1 (default 0.90 for AC charging)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "asOf": {
       "type": [
        "null",
        "string"
       ]
      },
      "cost": {
       "type": [
        "null",
        "number"
       ]
      },
      "hours": {
       "type": [
        "null",
        "number"
       ]
      },
      "source": {
       "type": [
        "null",
        "string"
… (truncated)
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/home-energy-calculators-ev-charging-time-cost-range-dda09c8a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from home-energy-calc.x402tookit.com](https://www.zero.xyz/host/home-energy-calc.x402tookit.com/llms.txt)