Battery life: 2xAA or 4xAAA - which is better?
2015年8月15日 · 2xAA stores a little more energy than 4xAAA. But it is not that simple. A fresh alkaline battery will put out 1.6V, and discharge down to around 1V or 0.9V over its useful life.
2xAAA battery => 3.3v/250mA step-up converter with logic-driven …
\$\begingroup\$ Anindo Ghosh: Thanks for that extensive information - definitely filed away :) Once I read that EMI would be an issue (adding shielding inside the constraints of the …
voltage - Electrical Engineering Stack Exchange
2021年12月12日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
How many amperes can an alkaline AA battery supply?
2021年6月15日 · In response to your comment to @winny's answer: Is impedance of 120 m-ohm equals to R = 0.120 ohm, and so U = 1.5/0.120 = 12.5 A and so the current of this battery is …
Running 3-4 red LEDs on 3xAAA batteries efficiently
2021年11月15日 · \$\begingroup\$ I have a cheap flashlight with 24 white LEDs in parallel and powered from 3 AAA cells. Obviously the forward voltage of the LEDs are matched and the …
overheat - Can I run a 2xAAA battery device on a 5 volt USB device ...
2020年11月8日 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
AA battery vs AAA battery - amperage and voltage
2017年11月12日 · I am testing the RPM values of a 1.5-3V motor with AA and AAA batteries. When I attached a dual battery holder with two AAA batteries to the motor, the motor spins …
How many watt-hours in two AA cells?
2018年10月26日 · If I wire 2 AA cells with a nominal capacity of 2 Ah and a nominal voltage of 1.5V each in series, then I'll get 3V with 2 Ah, right? Is that, thus 6 Wh? If I wire them in …