Two other suggestions: (1) For lead-acid batteries, contact companies that service fire alarm systems. Every two years or so the batteries in Exit signs have to be replaced. They might donate a few to you. (2) For lithium batteries, look for sources of the popular 18650 batteries. Break open a laptop battery, and you're likely to find four of them, with three still having life in them.
@@Inkling777 yes to both! You can harvest so many SLA’s that are replaced on maintenance plans. Another great source for 18650’s is throw away vapes. They all have one or more in them
I use batteries I already had. Power tool batteries. You can search for robotics connectors to plug them in. Buck converters to lower voltage if you need. Knockoff replacements for a cheap way to get more amps. Raspberry pi computers run on 5.2v 5A with a small touchscreen. Separate battery for sound. About 7 hours runtime overclocked. Android or PiOS. Installed in a 90's boombox. Video games, movies, tv, music, anywhere. Cell phone hotspot for internet.
Two other suggestions: (1) For lead-acid batteries, contact companies that service fire alarm systems. Every two years or so the batteries in Exit signs have to be replaced. They might donate a few to you. (2) For lithium batteries, look for sources of the popular 18650 batteries. Break open a laptop battery, and you're likely to find four of them, with three still having life in them.
@@Inkling777 yes to both! You can harvest so many SLA’s that are replaced on maintenance plans. Another great source for 18650’s is throw away vapes. They all have one or more in them
I use batteries I already had. Power tool batteries. You can search for robotics connectors to plug them in. Buck converters to lower voltage if you need. Knockoff replacements for a cheap way to get more amps. Raspberry pi computers run on 5.2v 5A with a small touchscreen. Separate battery for sound. About 7 hours runtime overclocked. Android or PiOS. Installed in a 90's boombox. Video games, movies, tv, music, anywhere. Cell phone hotspot for internet.
@@pgtmr2713 yes another great source of alternative power! And spot on with the buck converter, with one of those you can power all sorts of things
Power Sonic is a good brand of rechargeable lead/acid battery.