Planning, Engineering, And construction.

This battery is specifically designed to be the backbone of the XTX "project laptop" 's  power system while mobile. Attained from calculations that were done during the planning and creation of the power system, it was determined that, if with a desirable power draw headroom was accounted for, as well as factoring in desirable runtime requirements, A battery for the device would ideally be of very high capacity. This was initially planned to be done using 2 ~100 watt hour 11.1 volt Lipo/Li-Ion batteries, however, these would prove to be quite costly to attain. So, an alternative had to be made. this alternative, was a custom-manufactured, designed, and engineered battery utilizing relatively high-capacity laptop batteries that were readily available and much more "affordable" to attain. So, with this in mind, work began.

 The result of this work turned out to be multiple days of disassembling five entire laptops, and harvesting the batteries. then, once the batteries were extracted, the protective layering had to be carefully cut (backside or front side of BMS) in order to safely create an opening point. from there, the protective layer was peeled away, then the plastic frame around the batteries and underneath the BMS was detached. From there, the individual zinc wires were exposed and then separated from the BMS. After each of the cells were freed from the BMS, the individual wires could be cut down, leaving only a small amount of material and the battery contact point, leaving the battery to be wrapped in a thin layer of plastic around the flat sides, eliminating the strong adhesive that was present on the cells. 

This process could then be repeated until 15 cells were sourced, each prepared for soldering. At this point, the packs were ready for construction. First, the negative on each cell would be located utilizing a black dot, and then another cell would be layered on top with positive polarity, allowing the cells to be connected in series. Heavily saturated copper solder wick was used to connect the terminals, due to it's high availability, versatility, high flexibility and control. 

These 2 cells would be adhered, soldered in pattern, and then the third cell would be added, also being soldered in pattern and finally adhered the other 2 with a thin layer of electrically insulating tape at the bottom of the pack, completing the manufacture of one section.. The pattern for connection can be depicted as " Bottom negative ~ Middle positive, Middle negative ~ Top positive " this pattern is also depicted in Figure A of this page for more information. 

After all packs were assembled, it was time to interconnect and join packs to create the unified pack. To do this, one pack would be joined to another, and then wired in parallel creating a positive rail on the bottom- right terminal of the pack, and a negative rail on the top- left of the pack (or vise-versa depending on orientation. Each pack would be gradually interconnected to the right of the last with each connection point insulated, progressively building the pack up to all 5 sections connected in parallel. The final step of this process was, to ensure complete insulation, to use thin, electrical-resistant tape on both flat sides, as well as the top, sealing and insulating the battery terminals. Once the pack, Is fully insulated, both far-side parallel terminals could then be used to connect the battery.

The result of this construction turned out to be perfectly suited to the XTX's needs. It was high capacity, high wattage, and easily sourced. because of this, A second unit was constructed and The battery Is in use to this day. (statement recorded on Aug 12th, 2024)

Specifications 

Capacity: 

205.5 Watt-Hours, 18.514 Amp-Hours, 18,513.5 Miliamp-Hours.

Voltage Ratings: (Safe range)

Fully charged :12.60 Volts

Nominal: 11.1 Volts 

Fully discharged: 9-9.4 Volts

Power Output:

As much as you can pull from it, there is technically no wattage cap. However, during normal operation, A wattage draw from 15-60 watts (maximum usual, rare case) is expected.