laptop battery

The battery was down to 20 minutes life after about a month. I yelled about it at Toshiba until they sent me a new laptop battery, which was stone dead within a few weeks. Laptop batteries from some manufacturers have notoriously short  (not mentioning any names here:-), and the Ni-MH (Nickel Metal Hydride Battery) which replaced  (Nickel Cadmium) in most applications just aren't that much better. So, I thought I'd crack open the stone dead battery back and see if it could be rebuilt. The first thing I learned is that laptop battery packs aren't built to be rebuilt, they GLUE the things closed. Took some serious prying to get the thing battery pack open, but definitely in reusable condition.

Most newer batteries can't be easily repaired, but I find Amazon has  that it doesn't matter. There isn't a whole lot to an old laptop battery, just a hard plastic shell, enough individual cells to make up the required voltage, and a thermocouple. The black wire scotch-taped between two battery cells is the thermocouple, and it's positioned to measure the air temperature in the battery pack, not the actual battery surface temperature. Maybe that's why the batteries fail so fast. The only other component in the battery pack is the little circuit board (below), which has nothing on it but the contacts for the notebook DC circuitry. Looking at it from the outside, you would have thought there was some fancy charging circuit inside, not so. When you buy a replacement laptop battery, you're just getting a new set of cells to run down. If the battery shows 22% not charging: shows affected due to wear and tear  See how you can relieve from your laptop battery. First open the battery case (instructions are given below).See if you have any burns on one of the battery and the wire is melted out, so it may be short or the  ic is dismantled so do a check  (allow a resistance of the circuit in parallel to check).First thing first:1)generally batteries are not easily blown away so you can see a short circuit usually in the small circuit board because of the wire melting away. 1) with a multimeter,turn the measurement setting dial on the multimeter to DC . 2)Testing the devices on the circuit board by touching red and black probes.A zero reading indicates short circuit  First you have to keep in your mind there is a chip board  so you need to do a little bit of research like if during the opening or cutting of the case/cabinet you should put minimum knife edge inside to avoid damage to the IC or circuit board inside (properly installed inside)so be cautious if trying . It takes some time to open it but there is always good harm in cutting out the cabinet so do't worry. The batteries are pasted well inside the cabinet so you can manage to have one more helping hand to remove all at once,yes it will be completely removed. You can use a small cutter like we find behind a nail cutter or of similar size will be perfect.