How to Hack a Dead Laptop Battery

Assuming you are referring to the individual "cells" that make up a "battery", they must be the same chemistry (for example, lithium-ion is pretty common) to be charged correctly by the controller (that's the circuit board in the battery). The rated voltages must also match. If you can find cells of a higher capacity (mAh or WattHour) with the right chemistry that happen to fit into your old box, that's great. You just increased the capacity (and charging time) of your battery. This is because the charging circuit uses voltage to determine the charge. But don't bin the old cells straight away in case you have some excessively fussy circuitry in there!

No, because they have to be the correct amperage and voltage to power the laptop. You need to use the proprietary replacement batteries only.

You want a guide on "soldering", for which you need a soldering iron in this case. And solder + flux + practice at the least to do a lasting job. Chances of four cells being joined to each other in an ordinary battery are very very slim though.. When one cell goes, it takes any cells joined in series down with it fairly rapidly. For this reason, rechargeable cells usually have one connection each to the controller, or at the very most, cells linked in pairs to to the controller. When joining cells in series, solder + to -, + to -, + to -.

So the cells that are connected to each other in parallel have the chance to balance with one another. Actually, best practice is to pre-wire the paralleled batteries together with 10-ohm resistors between them and let them rest overnight. This will balance the batteries so they're perfect when you actually install them in the pack.

No, because a phone charger is not a "battery charger"; it basically converts 230v 60hz AC to 5v DC so it can be transferred through your phone's charging port. The actual charger is built into the smartphone (it converts 5v to approx 3.7v and monitors the charging process).

It is merely a sales gimmick. Ignore the messages.

In Windows, Search Edit power plan in Control Panel and Click on "Change advanced power settings" Then click on the + near "Battery" then click on "Low battery level" and "Critical battery level" and the other settings there and then change those settings.

Firstly, see if the wire sticking out of the end of your charger/laptop is not bent. If they are bent, try bending the wire back with tweezers or a toothpick. If that does not work, you may need to get a replacement DC jack. On some laptops, the charging end is a single replaceable part (like on a Dell Latitude 2110) and sometimes it's part of the motherboard entirely (like on those piece of junk HP streams and Chromebooks) Take apart your laptop and see if the individual DC jack can be replaced or has a broken connection, or if its on the motherboard you may need to see if there is a bad trace or if tour motherboard may have gone bad.

How did they install it at the factory? If they can install it there, then you can un-install it elsewhere. Each laptop has a special out of the way/sight function switch to release the battery/memory slots. You really have to investigate your laptop's manual, which is the final frontier of the computer. I have an HP laptop and it is easy to remove.