How to charge a laptop (if there is no light)?

Question

laptops

Good day!
periodically 1 time in 2 weeks, they began to turn off the light for about 8 hours.
How can I extend the laptop's operating time by this time?
Notebook Dell Inspirion 7577. Power adapter 130W.
some thoughts:
Purchase:
- Inverter gasoline generator.
- Power Bank
- or it is possible to somehow charge from the Car battery.
Who can advise?

Answer 1

- Power Bank
- or it is possible to somehow charge from the Car battery.

These two items are compatible and you will need one and a half car batteries. Moreover, those that do not draw a huge starter current due to old age are suitable, and they are able to give out the 2 ... 3 amperes required for a laptop for several hours, depending on the capacity. Often, these can even be obtained for free in some car fleet.
Then you connect in series one battery and half of the second (i.e. three sections of the six available), this is easy to do on those with open lead jumpers between sections - on that jumper , which connects the third and fourth sections, do drilling and drive a self-tapping screw there, and press the wire under it.
The resulting battery will give you 18 volts (12 + 6, that's exactly what the laptop needs), connect it instead of the standard PSU. Well, how to recharge such a battery, I hope you solve this problem yourself.

Answer 2

I will definitely give bad advice, but this is exactly the case when it comes in handy - power supplies for laptops with 12V INPUT are sold. That is, you can either connect to the outlet, as usual, or to a 12V battery (for example, in a car to the cigarette lighter). In this case, you do not need to look for a full-fledged UPS, or some kind of DC-DC converters, everything will already work anyway.
Why bad advice? - because, in my experience in laptop repair, it is these universal PSUs that cause laptops to break down. In 80% of cases, due to problems with the voltage switch, either there is no contact, or the user himself accidentally set the wrong voltage. The exception is a PSU with electronic switching - when voltages are cyclically switched with one button, and after a few seconds it is fixed and it is impossible to change it on purpose or by accident.