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2 votes

USB mouse vs. Bluetooth mouse -- less battery drain

Let compare electric components. I. The bluetooth is controller + bt. The WT12-A-AI5 (I found the datasheet) current is 31,5mA (Data transmitted @ 115200bps) * 3,6v. The power is 0,012 watt (max) II. ...
nick_n_a's user avatar
  • 121
1 vote

USB device to draw constant small current to prevent power bank from shutting off

On a more positive, productive note, my second test was successful, but may not fit your requirements. The image is a composite of the powerbank, USB monitor and a PCB USB LED "flashlight." ...
fred_dot_u's user avatar
  • 1,408
1 vote
Accepted

How to detect the voltage of a brushless motor

A few misconceptions for your device. The battery voltage is 24. The capacity is 2.2 ampere-hours, not 2.2 amperes. This (Ah) is the equivalent of the size of your gas tank, while a current ...
fred_dot_u's user avatar
  • 1,408
1 vote

Battery upgrade for HP 15-BS laptop

Don't risk incompatible batteries. Prefer buying it from a third-party shop than getting a different model. If you think that is not an upgrade, batteries degrade over time, so if you are using it for ...
Irsu85's user avatar
  • 2,540
1 vote

Alternative to lead-acid computer battery backup?

Lead acid batteries in the typical office level UPS are Valve-Regulated Sealed Lead Acid (VRSLA) and as such do not release any fumes unless something is wrong. If the unit is overcharging, the ...
fred_dot_u's user avatar
  • 1,408
1 vote

Good battery charger for AA+AAA batteries, especially for older batteries that don't charge well in other chargers

I have a Powerex MH-C9000 WizardOne (by Maha?), that has served me VERY well for several years. It was probably one of the most pricy chargers available when I bought it, but I don't think the ones ...
Stax's user avatar
  • 161
1 vote

USB mouse vs. Bluetooth mouse -- less battery drain

I was thinking of a USB mouse with a cable that plugs into a USB port, not a wireless mouse with an RF dongle. If I were to use such a mouse, I'd turn Bluetooth off. The question is would a cable-...
eppursimuove's user avatar
1 vote

How to make a battery powered device work direct on power

I was looking for ways to control the voltage of an outlet, since we are in quarantine, I would not find resistors and transistors. But I just remembered that USB cables already do this job for me. As ...
Neo son's user avatar
  • 31
1 vote

Laptop Series Battery Compatability

Contact a sales rep at Batteries Plus which has a very detailed set of choices for Toshiba L655 series batteries. Make it a 'condition of sale' that it must fit. If the sales rep quibbles or won't ...
K7AAY's user avatar
  • 1,715
1 vote
Accepted

Processor and battery relations

The TDP of an i5-8269U is 28 watt. TDP = thermal design power = most power cpu will draw when running @ 100% = one of the best ways to gauge a CPU's impact regarding power draw. https://ark.intel....
ron's user avatar
  • 946
1 vote

Are there laptops with extremely high battery capacity?

What you are looking for are Panasonic's Toughbooks. They are one of the most durable laptops out there. And yes, the battery lasts quite a while. If one battery is not enough for you, it also has ...
Henk Blaauw's user avatar
1 vote

What should I care about when buying a new battery pack for a laptop?

If it has the same model but not the same voltage, it's not good enough. Requirements to look for: It has to fit in the battery slot. So check the dimensions and the connector. It has to be the ...
Mast's user avatar
  • 227
1 vote

Changeable cell phone battery pack

If I understood you correctly, a "cell phone USB charger" is a power bank. If that's right, then as far as I am aware, you have two options: Buy a 20Ah charger that has multiple batteries inside, ...
Alex's user avatar
  • 538
1 vote
Accepted

Raspbery Pi case with Real Time Clock and battery power

The PiJuice HAT includes a battery solution for the Pi, and has a built-in RTC. There's additional features/add-ons available as well.
ToniCorinne's user avatar

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