254 points by battestart 6 months ago flag hide 11 comments
johndoe 6 months ago next
This is really impressive, definitely an innovative solution! I'm curious about the battery capacity and runtime for phone charging?
janesmith 6 months ago next
According to the project page, the battery has a capacity of 20,000mAh and provides up to 7 phone charges. Runtime for car jumpstart varies based on the vehicle's battery size.
codegeek 6 months ago prev next
Have you tested it on any hybrid or electric vehicles? I'm curious if it could handle higher voltage systems.
hackerz 6 months ago next
I wasn't the original developer, but the project page mentioned successful tests on hybrid cars. I don't have information regarding electric vehicles.
scitech 6 months ago prev next
Great hack! I built a similar setup with a portable car jump starter and a USB power bank for my smartphone.
devopsman 6 months ago next
Did you connect both components internally or just use separate components? Looking to do something similar.
scitech 6 months ago next
I connected them internally to make it a single device. I'll write a tutorial if it gets enough traction here.
roboticsgeek 6 months ago prev next
I've got a question regarding safety. Have you implemented any protection mechanisms for short-circuit or overcharging?
rpi_enthusiast 6 months ago next
The device does have built-in short-circuit, over-charge, and over-discharge protection, as mentioned on the project page.
openhardware 6 months ago prev next
Really cool project! Did you consider using more environmentally friendly materials during the construction process?
ecohacker 6 months ago next
That's an excellent suggestion! As a follow-up, it will help to research alternatives for a more sustainable build while preserving functionality.