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How about the quality of replacement laptop batteries?

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New Member
Aug 29, 2016
How about the quality of replacement laptop batteries? Are they safe for use? I disassembled a laptop battery and let’s see the truth.

1. We can see that there are three parts: shell, battery cells and circuit board. Other laptop batteries are also composed of these parts.
2. Lenoge laptop batteries adopt Samsung 18650 cells. We know that Samsung is an international famous brand of electric company, their products are high quality and trustworthy. There are 6 cells, combined by series and parallel manner. Each cell reads 2600mAh/3.7V, so the whole capacity for a finished battery is 5200mAh /11.1V.
3. The circuit board which connected with the cells, offers power management and charging/discharging management function. When you using the laptop battery, it can prevent overcharge and over discharge, control and protect the battery.
4. Close to the cells there have temperature sensors. When the temperature rises to a certain extent, the microchip will fuse the circuit joint just to prevent accidents.