Solar Panel → Battery Charging Calculator

Light Mode

Calculate how long it will take to store energy from the solar panel into the battery — suitable for scooters, storage batteries and DIY projects.

Panel power (W)

Panel nominal voltage (V) (optional)

Charge controller

Controller efficiency (%)

System losses (%) (cables, temp, inverter if any)

Peak sun hours per day (h)

Battery capacity (Wh)

Battery nominal voltage (V)

Recommended max charge (C-rate)

What is C-rate? 0.2C means a charging current equal to 20% of the capacity — i.e. current = 0.2 × Ah. For example: 10 Ah battery × 0.2 = 2 A.

If custom, enter C as decimal (e.g. 0.3)

Notes / target

Fill the inputs and click Calculate.

🔗 Embed This Tool on Your Website

Copy the code below and paste it into your website’s HTML where you want the tool to appear.

<iframe 
  src="https://ridewattly.com/tools/solar-panel-to-battery-charging-calculator-tool/"
  width="100%" 
  height="600" 
  style="border:none;border-radius:12px;overflow:hidden;"
  loading="lazy"
  allowfullscreen>
</iframe>

Solar Panel → Battery Charging Calculator

🔗 Embed This Tool on Your Website

🔧 Similar Tools