Making a Battery for a Laptop?

I can be done, I guess.

Lithium battery is fussy about charging, if overcharged, may catch fire. Laptop has quite elaborate circuitry to prevent overcharging, this circuitry may not work with your battery. So if you use your battery and at the same time , plug in AC supply ,it may be very dangerous.

My advice is, play with something else.

Ebay it is! Case closed!!!!

Wise choice.

You will find that advice given by mjb1962853 is usually top notch.

Would it be wrong or Grammar Police, to point out to the OP that the phrase is "...I would just as soon buy a new laptop..."

Not "...I would just assume, buy a new laptop..." ?

OP is clearly American. I think I would like to know, if it was me. It reminds me of the guy talking about his French benefits at work... instead of his fringe benefits.

Just sayin'...

If he meant "I had rather buy a new laptop" (I had just as soon) and not "I just assume, buy a new laptop"(I think, buy a new", you could be correct.

So much depends on context.

I'd stand down the "Grammar Police", for now.

Ah, yes. True. That could potentially be a tricky one, depending on context.

Standing down.

I do kinda like the French benefits though!

Blue prince has always been my favorite.

And finger prince, too!

Soo... if a frog is walking across the mud, does he leave frog prince behind him?

We used to sing, while waiting for documents from the vault: "Someday, my prince will come."

Several points:

1. All current laptops I'm familiar with use intelligent batteries. That is, the battery is not just a group of cells. It also contains devices for determining the condition of the cells and signalling that information to the laptop. A successful replacement must include that additional circuitry.

2. As previous posters have said, it is dangerous to attempt this. There is a significant danger of either causing a fire, or destroying the laptop.

3. I haven't checked your specific model, but I seriously doubt if the current battery is 'four cell'. Most current laptops have supply voltages in the 12-24V range, while a four cell battery has something under 6 Volts, depending on the battery chemistry.

4. Unless this computer has been physically abused, it is certainly economical to buy a new battery. Apparently you have other reasons for dissatisfaction ...?

5. I understand you to say it has always been charged. That may be the reason for the problem. Laptop batteries need to be used! Leaving it plugged in all the time without ever discharging the battery will cause premature failure.

6. I assume the one year warranty you refer to was the battery warranty, not the computer warranty. Original computer batteries should last at least a couple of years. This laptop is still doing fairly well on its second battery (not the original manufacturer's battery) after almost 4 ¹/₂ years.

Well if you wanted to "kludge" something to just make it work, you could get a small gel cell battery and a small DC to AC inverter hook them up and just plug your ac plug into the inverter.

GA. Not very efficient, but definitely the safe way to do it! I use my laptop in the car that way fairly often, using the car battery of course. That way you know you have the correct voltage and polarity for the laptop.

BTW OP, if the battery gets really bad, you should remove it entirely. I've seen several cases of bad batteries preventing the computer from working. Of course it is less portable without the battery, but it sounds like you weren't using it much as a portable anyway.

I think the amount of time you spend working on this would be significant in cost and instead you could go to http://www.sparepartswarehouse.com/, a place I have bought all my Toshiba accessories, replacements etc. It's the best price I have found online and no, I have no disclaimers here except that I am a customer of theirs and have spent about $100 there over the last few years.

If you need to ask here, you don't have the specialist knowledge to make a GOOD working battery. Buy a new one.

The reasons that your battery is dead is because you have charged it too often. Good batteries handle around 200 re-charges, bad ones less, far less!!

Good tip, let the battery run down till about 10% of charge, remove from laptop and store, only charge it when you need to go off grid.

Storing the battery fully charged is bad.

Every time you plug your laptop in to the mains is bad for the battery and is counted as a charge, even when the battery is full.

I have Laptop batteries that are over 10 years old, this laptop's battery is 5 years old, has hardly been used......only where no mains was available.