Disassembly of the LEIPURUI Electric Tool Battery Pack
LEIPURUI has launched a power battery pack specifically designed for electric tools. This battery pack is configured in a 5S2P connection, totaling 10 cells of 3.7V power 18650 batteries.
The nominal voltage of the battery pack is 18V, with a capacity of 6Ah and energy of 108Wh.
This battery pack features a bidirectional USB-C interface and is equipped with built-in bidirectional boost and buck chips, supporting charging via the USB-C interface and serving as a mobile power source.
There are also indicator lights on the side of the battery pack to conveniently monitor the battery pack’s power status.
Now, let’s disassemble this battery pack and take a look at the internal materials and design.
Appearance of LEIPURUI Electric Tool Battery Pack
LEIPURUI Electric Tool Battery Pack Appearance
The LEIPURUI electric tool battery pack adopts a pure black color scheme with accents of yellow in an industrial design style. The outer shell is made of PC material with a fine-grained frosted texture, smooth transitions, and a comfortable feel. From the side view, this product references the design of large transport vehicles, with “18V LITHIUM-ION” and USB-C port parameters printed on both sides.
Disassembly of the LEIPURUI Electric Tool Battery Pack
After examining the appearance of this electric tool battery pack, let’s proceed with the disassembly to explore the internal materials and design. First, unscrew the screws securing the housing to dismantle the battery pack.
An Overview of the Interior of the Shell: The batteries are fixed within plastic brackets, with the positive nickel plates of the batteries connected through welding. Individual battery voltage sampling is also connected via nickel strip welding. The PCBA module is connected by welding and fixed with screws onto the plastic bracket.
Remove the battery pack from the shell.
The nickel strips on the side of the battery pack are spot welded to the PCBA module. The batteries are insulated and fixed using plastic brackets. The batteries are connected via nickel strip welding on the side.
Remove the PCBA module.
An overview of the front of the PCBA module: the bidirectional synchronous boost and buck circuit is welded on the left side, with the battery protection circuit welded on the right side, and the battery contacts are in the middle, used to connect power tools.
A set of batteries is fixed in a plastic bracket.
These batteries are 3.7V 3000mAh 18650 batteries with a grey outer casing.
Summary of the Battery Pack Disassembly
This battery pack from LEPURUI contains 10 18650 batteries and has a USB-C interface, supporting bidirectional charging and discharging. The measured charging power of the battery pack is approximately 45W, with an output supporting 30W fast charging. Using a PD charger, it takes 2 hours to fully charge the battery. In addition to being a power tool battery, it can also be used as a mobile power source for smartphones and laptops, providing comprehensive functionality.
What’s more, this battery pack integrates the Enesoon IP2368 synchronous boost and buck converter for USB-C interface input to charge the battery, or to discharge through the USB-C interface. The internal battery uses Guanyu MOS tubes for boost and buck and protection functions, and uses solid-state capacitors for filtering. The battery adopts the MaxPower CW1051 for overvoltage protection, and is equipped with a thermistor for temperature protection. The battery pack is configured in a 5S2P connection, totaling 10 cells of 3.7V power 18650 batteries. The nominal voltage of the battery pack is 18V, with a capacity of 6Ah and energy of 108Wh, using a plastic frame for insulation and fixation, ensuring solid and reliable materials and workmanship.”