1 Replacing My Car Battery with Capacitors! 12V BoostPack Update
A hobbyist replaces a car battery with a supercapacitor pack; cited as proof it can start a car, with answerers noting it drains quickly with the engine off.
Topic
battery
8 videos. Ranked by independent recommendations, not by views.
2 EEVblog #140 - Battery Capacity Tutorial
Dave Jones explains what battery capacity ratings mean, how higher discharge current reduces usable capacity and how a high device cut-off voltage wastes charge.
3 Fun with a few 9V batteries. (244 of them)
Cited in threads on series battery stacks as an example of a 244-cell 9 V stunt, which answerers describe as reckless rather than instructive.
4 #58 ESP8266 Sensor runs 17 days on a coin cell/transmits data (deep-sleep)
Andreas Spiess builds an ESP8266 sensor that runs 17 days on a coin cell using deep sleep; a common starting point for battery-powered Wi-Fi sensor projects.
5 Ten Car Battery Presentation at Calgary Mini Maker Faire
ElectroBOOM touches about 120V DC from stacked car batteries at a maker faire, cited in threads on how dangerous DC is to touch compared with AC.
6 Low Power Arduino! Kill Power Circuit Tutorial
Shows an Arduino cutting its own power through a transistor after a button press, offered as an example for battery projects that need near-zero standby current.
7 Why do Li-ion Batteries die ? and how to improve the situation?
A lecture on why lithium-ion cells degrade and how to extend their life, cited for an expert view on cell strain and on battery longevity.
8 #101 Long lasting DIY "Amazon Dash Button" using an ESP8266
Recommended Andreas Spiess video on a MOSFET latch that lets a microcontroller hold its own supply on after a button press, then cut it off when finished.
