Laptop battery reconditioning

hello

so in today's episode I'm going to be showing you how to rebuild an old laptop battery now in this particular example i'm going to be using this old rival

clans show but keep in mind that what i'm going to be showing you is really

could be applied to just about any laptop or even an appliance like a cordless drill

ok now one of the first things I want to tell you is there's really no reason to

be apprehensive about doing a procedure like this and take this battery for

example I mean it is dead I mean it is totally did it will not run the laptop

even for 10 seconds so no matter what i do to this battery i'm not going to make it any worse off

than it is now ok the first step is to take the battery apart this particular one is held

together by snaps some batteries use screws and some even use glue but I've

never come across a battery that couldn't be disassembled with some

ok so once the battery was part I knew what kind of cells that used as i

suspected they were 18 650 cells around 3.7 volts so the next step was to jump

on ebay can buy some all right so let me give you a little warning about buying a lithium batteries

on ebay if you buy a cheap Chinese battery like an ultra fire

you can be absolutely sure that whatever they list as the million power rating is

a total lie

for example a good battery like made by panasonic or same song will typically

advertise a million power rating of somewhere between 2000 2500 and that's

pretty realistic

now this if you look at that for example these ultrafire batteries on ebay you'll

see their advertising six thousand five hundred million powers that is total

bull as so realistically at the separate is is these batteries actually have even

less than the name brand batteries when people have tested on they've actually

found they're more like a thousand fifteen hundred million power is rather

than 6,500 I mean think about it

the tesla model s use 18 650 batteries if six thousand five hundred million

Power Cells really existed then that car would be able to get around seven

hundred and thirty miles of range instead of 280 miles but what they are

is super cheap

yeah I actually paid like a dollar apiece for the

batteries and it's actually pretty good because a name brand matter would run

more like four or five dollars apiece and since this is not a computer i

really need a lot of run time on it's mostly just an experiment

you know i'm ok with the with the lower milli ampere rating one thing that's

good to do is sort of sketch out the arrangement of the cells how this

battery pack is set up is that the cells are actually paired together and the

pairs are arranged in series like this

the main power connects at each end but there are sensor wires between each cell

pair for monitoring and balancing in fact if I really wanted to be cheap

I can actually eliminate for cells of this pack and it would still work just

fine but the runtime would be cut in half by the way when working with

batteries i always like to keep one of these nearby just in case i overheat one

that we're going like thermal runaway or something

so now that I have the sells out of the battery i need to desolder them and one

of the things i found out was that these metal clips are actually welded on so I

was not able to be sort of them so i had to use wire as a substitute one of the

first things I did was put some initial solder on the battery terminals

you need a pretty strong soldering iron to do this is you have to eat the

battery up pretty quickly to do this you have to make sure the solder X has

actually stuck to the battery like this

of course you have to get both sides and the negative side is a little harder

because there's more to heat up

so then I strip some of the wire and begin the process of solving it onto the

battery pack

I found it easier to take the batteries in Paris while doing the soldering and

then I also eventually set up some wood blocks into kind of a jig that help hold

these together while at work

once all the main connections were done you can see how it mimics the design of

the original battery

all that was left to do now is connect the original electronics to the cells

then I put it all back inside the original battery and of course you have

to close

well the cells apparently had no charge whatsoever as the computer would not

turn on so i had to plug in the AC adapter

after a moment it started to take the charge and before long I can actually

see the percentage start to rise but keep in mind the battery pack is not

calibrated the only way to actually calibrate it would be to go ahead and

fully discharge the battery and recharge it several times that way the little

micro controller inside the battery pack will be able to learn the actual

capacity of the battery once it was charged up I unplugged it and set a

timer going so i can see how long it would run

I turned off sleep mode to make sure that the computer state of maximum drain

the whole time so I'm not even sure how long a brand new battery is supposed to

last and i have a clamshell

now in the past I've had used batteries go as long as two and a half hour so my

guess is a brand-new and would do three possible even for hours

so be really interesting to see what these a cheap batteries will do so I

noticed around the one-hour mark it was still going strong

so far so good or so I thought

it turns out it went in to suspend mode not too long after and wouldn't wake up

so I had to plug the power cable and sure enough it was drink 20

so it turns out these el cheapo batteries from ebay will only run the

computer for about an hour and 35 minutes which is probably at least half

of the original runtime of brand new battery so that means the million power

rating on these batteries is like i mentioned before probably closer to one

thousand maybe 1,500 at the

at the absolute best so overall I'd say it's a successful product because I

pretty much knew what to expect when i was getting into it and so that's just

kind of warning on those those ebay batteries just you know you get what you

pay for so as long as you're ok with with the cheaper batteries you know what

you're getting you know

battery reconditioning method,

battery reconditioning guide,

battery reconditioning charger,

laptop battery reconditioning