How to increase amps to 2Amps from 50mA

I have a solar panel and the amps are low. How to increase the ammps to 2 Amps to make it usable for mobile charging.

Ideally how much voltage and amps needed to charge mobile faster. Once you connect load the voltage and amps dip. So how to maintain constant current and voltage for effective charging.

by bvenkat
May 22, 2023

You will need to store the required energy.

Like a lake, which you are filling with rain and small creeks, while you empty it by opening fully the lake's discharge when you need the (stored) water in a large amount.

Using supercapacitor is fine with solar panels since they can hold a lot (of energy) but are limited to low voltages.

Next you probably need to boost the voltage with a dc-to-dc voltage converter.

And quite probably, mainly if you use a lithium-ion battery, you will need to monitor the charge (there are ICs just for that) and even the temperature of the battery (they explode/burn around 80C).

Most people that I know have bought the whole "thing" already made. Like at AliExpress (Not necessarily what I recommend, but as proof that is exists).

by vanderghast
May 22, 2023

No Answers

No answers yet. Contribute your answer below!


Your Answer

You must log in or create an account (free!) to answer a question.

Log in Create an account


Go Ad-Free. Activate your CircuitLab membership. No more ads. Save unlimited circuits. Run unlimited simulations.

Search Questions & Answers


Ask a Question

Anyone can ask a question.

Did you already search (see above) to see if a similar question has already been answered? If you can't find the answer, you may ask a question.


About This Site

CircuitLab's Q&A site is a FREE questions and answers forum for electronics and electrical engineering students, hobbyists, and professionals.

We encourage you to use our built-in schematic & simulation software to add more detail to your questions and answers.

Acceptable Questions:

  • Concept or theory questions
  • Practical engineering questions
  • “Homework” questions
  • Software/hardware intersection
  • Best practices
  • Design choices & component selection
  • Troubleshooting

Unacceptable Questions:

  • Non-English language content
  • Non-question discussion
  • Non-electronics questions
  • Vendor-specific topics
  • Pure software questions
  • CircuitLab software support

Please respect that there are both seasoned experts and total newbies here: please be nice, be constructive, and be specific!

About CircuitLab

CircuitLab is an in-browser schematic capture and circuit simulation software tool to help you rapidly design and analyze analog and digital electronics systems.