Ordinary lithium batteries have a working voltage of 3.7V and a termination voltage of 3.2V. The working voltage of lithium iron phosphate battery is 3.26V and the voltage of termination is 2.5V. Lithium battery is a primary battery that uses lithium metal or lithium alloy as the negative electrode material and uses non-aqueous electrolyte solution. It is different from rechargeable batteries, lithium-ion batteries and lithium-ion polymer batteries. The inventor of lithium batteries is Edison. Since the chemical properties of lithium metal are very active, the processing, storage and use of lithium metal are subject to very high environmental requirements.
Dell Laptop Battery Removal Tutorial!
Laptop batteries and general rechargeable batteries are actually structured in such a way that its can't be plugged in much, but there are many differences. First, let's talk about the similarities:
1. both composed of rechargeable batteries such as: nickel batteries or then lithium-ion batteries, etc.
2. The battery structure of multiple units is combined into a laptop battery
Different:
1. Laptop Battery It has battery protection chip and better security chip
2. Laptop batteries have several circuit designs
3. usually higher than ordinary rechargeable batteries
Today I disassembled a battery on a DELL laptop The battery is general DELL battery design: square shape
First of all, you need to prepare some. tools, a flat blade screwdriver, preferably thin, a little is better!
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As shown in the picture below, utUse a flat blade screwdriver to directly open the gap. Here we need to explain why it's not a screw?
Since almost all laptops use the form of a single package to produce laptop batteries, and there is also a lot of rubber attached inside, our first step therefore consists of starting from the empty spaces of the battery. battery shapes mean different starting points!
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We open it from different angles! Friends, as shown below, what we are currently working on is the "Metal Bayonet Position!"
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The hard work has paid off! Finally, we forced it open! and we can still see vaguely through space. I saw that Dell laptop battery is SONY cell as shown below:
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Now we don't need it anymore . Screwdriverflat blade, now let's start using our hands. To do the following, we open the battery case further as shown below:
You can see below that the battery is an 8-cell laptop battery. What I didn't expect is that DELL's battery is still there. There are LCD indicators to show battery information, which is pretty cool in the past this was only seen on Apple laptop batteries.
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We randomly pulled out a set of batteries:
You can see that the battery connections are made of sheet metal and are installed with a professional welder
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OK. The management chip is on the cover and can be removed directly. The battery life is only more than 2 years. Many people simply replace the battery cells in exchange for anew duration of use!
Generally speaking, the battery management chip is difficult to break, so the general battery problem lies in the battery cell! Use the cells from the same battery that wear out the most!