i use hp-15 notebook laptop and when i power on it it says that problem with battery(internal) 601 problem and needs to be replaced. so what shall i do? is it a problem of Cemos battery or external battery? which battery did i replaced? Though Battery is fully charged… System shut downs after 15-20 minutes… But If plugged in works properly.. What would be the problem?
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Description: it comes in handy in case you need to cut battery housing and take out internal elements. A simple knife with thin blade and handle would do as well.
However, if you have refill caps on the top of your battery and if you are sure that you do not have an AGM or GEL battery, you can follow these steps to recondition your car battery:
Separate and strip off 1" of each wire. You have *just* made booster cables! Good for you.
If you have an electric vehicle (EV), you won’t need to worry about battery maintenance—aside from charging, of course. EV batteries typically last 10 to 20 years, so unless you keep the same EV for several decades, you likely won’t need to replace your vehicle’s battery.
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It’s clear that battery repair has a lot of advantages for many players involved in the battery game. Extending the life of lithium-ion batteries saves costs for the manufacturer and the importer of electric vehicles, since the battery is an expensive part of the electric car, and is often covered by the manufacturer’s warranty.
I came here to ask this same question. there are no fuses or circuit protectors to check so why do you have to disassemble the battery??
If you have distilled water and aspirin (acetylsalicylic acid), you can make a solution to chemically alter the electrolyte mix. To make aspirin and distilled water solution, you need to crush 12 350 mg or 500 mg aspirin tablets and dissolve the powdered aspirin in about 6 oz of warm, distilled water. Then add equal amounts to each cell. You may need to add more water to cover the plates.
3. A fix2U Repair Hero comes to your chosen location* and replace your iPhone battery.
No one is answering these questions since 2011. Why not just close the comments off
Along with stocking replacement drill and power tool batteries, we can also rebuild many NiCd & NiMh drill batteries from top brands such as snap-on, DeWalt, Makita, Ryobi & more! Ensuring at least one thing won’t go wrong in your DIY project!
Characteristics: it is nearly impossible to recondition without this. It has applications for various purposes, like repairing a simple appliance. Multimeter is used to check a battery, and gives an idea whether it needs to be reconditioned. It is also used for restoration to raise the level voltage up to the number we need.
NOTE: If you are using a really nice BMS that has active balancing, you can get away with putting healthy, fresh cells in a tired battery pack. This is because such BMS are able to correct the imbalance fast enough. There is still reduced capacity, but not nearly as much as there would be in a battery pack with a lower-end BMS. However be very careful doing this you do not want to put new cells with old cells that are too far apart in true capacity.
Make sure that you use NiCd batteries with a typical capacity between 450mAh and 800mAh.
If you have a 12V battery that has low voltage (3-6V) the charger may not work directly. For complex reasons, you have to provide a lot more current in a battery that has been deeply discharged. So what you can do is use booster cables and connect the low battery to the good battery. (positive-to-positive, negative-to-negative) Leave them connected for a couple minutes. If your good battery is in a car, leave the car OFF.