Tabless 21700 50D Battery
| Model | INR2170-50D |
| Rated Capacity | 5000mAh @25℃, standard charge and discharge. |
| Typical Capacity | 5050mAh @25℃, standard charge and discharge. |
| Nominal Voltage | 3.6V |
| Rated Energy | 18.00Wh |
| Typical Energy | 18.18Wh |
| Limited Charge Voltage | 4.2V |
| End of Discharge Voltage | 2.5V |
| Upper Limited Charge Voltage | 4.25V |
| Discharge Cut-off Voltage | 2.0V |
| ACIR | ≤6mΩ, 1kHz |
| Standard Charge Current | 2500mA |
| Standard Discharge Current | 1000mA |
| Max. Charge Current | 15A |
| Max. Discharge Current | 50A (with 80℃ temperature cut off) |
| Charge Ambient Temperature | 0℃~45℃ |
| Discharge Ambient Temperature | -20℃~60℃ |
| Charge Surface Temperature | 0℃~55℃ |
| Discharge Surface Temperature | -20℃~80℃ |
| Storage Temperature | 1 year, -20℃~25℃ |
| 3 months, -20℃~45℃ | |
| 1 month, -20℃~60℃ | |
| Humidity Range | 0~60% RH (non-condensing) |
| Cell Weight | ≤69g |
| Cell Dimension | Diameter: 21.45mm Max. |
| Height: 70.75mm Max. |
Tabless batteries represent a significant advancement in lithium-ion cell design, fundamentally improving upon the conventional cylindrical format. Traditional cells rely on discrete, localized metal tabs to collect current from the coiled electrode layers (the "jelly roll"). These tabs create a bottleneck, forcing electrons to travel long distances, which results in higher internal resistance and substantial heat generation, particularly during high-power use or fast charging.
The "tabless" architecture, also sometimes referred to as multi-tab or continuous current collection, eliminates this bottleneck. Instead of relying on a few connection points, the entire edge of the spirally wound anode and cathode layers acts as a continuous pathway for current flow.
This innovative design offers crucial performance benefits: Reduced Internal Resistance: Shorter electron pathways dramatically lower ohmic resistance, increasing efficiency. Enhanced Thermal Management: Less resistance leads to significantly reduced heat generation, improving safety and battery lifespan. Higher Power and Faster Charging: Lower resistance allows for higher current output and accelerated charging rates without undue degradation. Scalability: The design is crucial for safely and efficiently scaling up to larger cell formats, such as the 4680 cell.
Tabless batteries are quickly becoming a key enabler for next-generation Electric Vehicles (EVs), high-performance power tools, and other demanding applications, promising superior performance, durability, and a more efficient energy future.
The "tabless" architecture, also sometimes referred to as multi-tab or continuous current collection, eliminates this bottleneck. Instead of relying on a few connection points, the entire edge of the spirally wound anode and cathode layers acts as a continuous pathway for current flow.
This innovative design offers crucial performance benefits: Reduced Internal Resistance: Shorter electron pathways dramatically lower ohmic resistance, increasing efficiency. Enhanced Thermal Management: Less resistance leads to significantly reduced heat generation, improving safety and battery lifespan. Higher Power and Faster Charging: Lower resistance allows for higher current output and accelerated charging rates without undue degradation. Scalability: The design is crucial for safely and efficiently scaling up to larger cell formats, such as the 4680 cell.
Tabless batteries are quickly becoming a key enabler for next-generation Electric Vehicles (EVs), high-performance power tools, and other demanding applications, promising superior performance, durability, and a more efficient energy future.
| Tabless Models | Reference |
| INR18650-JP30 | 18650 Tabless Battery |
| INR18650-30PL | Tabless 18650 Battery |
| INR18650-30XG | Tabless Battery 18650 |
| INR21700-RS40 | 21700 Tabless Cell |
| INR21700-40PL | 21700 Tabless Battery |
| INR21700-JP40 | Tabless 21700 Cells |
| INR21700-40XG | Tabless 21700 40XG Battery |
| INR21700-40P | Tabless Lithium Cell |
| INR21700-42P | Tabless Li ion Cells |
| INR2170-45D | Tabless 21700 Battery |
| INR2170-50D | Tabless 21700 50D Battery |
| INR21700-50PL | Tabless 21700 |
| INR21700-RS50 | 21700 Tabless |
| INR21700-50XG | 21700 Tabless Cells |
| INR21700-RH60 | Tabless Cells 21700 |
| 4680 Tesla Battery | 4680 Tabless Battery |
Since its inception, BAK Battery has established itself as a global leader in the lithium-ion industry, consistently pushing the boundaries of energy density and discharge performance. As a premier manufacturer, the company focuses on delivering high-quality power solutions for a wide range of applications, from electric vehicles and energy storage systems to high-demand consumer electronics and power tools.
A cornerstone of their current technological advancement is the BAK battery 21700 platform. By leveraging a larger form factor than traditional cells, BAK has successfully optimized the balance between thermal management and capacity. Within this lineup, the BAK 45D 21700 battery stands out as a versatile workhorse, widely recognized for its reliability in mid-to-high power applications. Its robust design ensures consistent cycle life even under rigorous operating conditions, making it a preferred choice for industrial integrators.
Furthermore, BAK is at the forefront of "Tabless" technology, which significantly reduces internal resistance and minimizes heat generation during high-current discharge. This innovation is epitomized by the Tabless 21700 50D battery, a cutting-edge cell engineered for elite performance. By eliminating the traditional tab structure, this model allows for faster charging speeds and superior power delivery, catering to the most demanding modern hardware.
Through continuous investment in Research and Development, BAK Battery remains committed to sustainable manufacturing and technical excellence. Their ability to mass-produce advanced cylindrical cells ensures that they remain a pivotal player in the global transition toward electrification.
A cornerstone of their current technological advancement is the BAK battery 21700 platform. By leveraging a larger form factor than traditional cells, BAK has successfully optimized the balance between thermal management and capacity. Within this lineup, the BAK 45D 21700 battery stands out as a versatile workhorse, widely recognized for its reliability in mid-to-high power applications. Its robust design ensures consistent cycle life even under rigorous operating conditions, making it a preferred choice for industrial integrators.
Furthermore, BAK is at the forefront of "Tabless" technology, which significantly reduces internal resistance and minimizes heat generation during high-current discharge. This innovation is epitomized by the Tabless 21700 50D battery, a cutting-edge cell engineered for elite performance. By eliminating the traditional tab structure, this model allows for faster charging speeds and superior power delivery, catering to the most demanding modern hardware.
Through continuous investment in Research and Development, BAK Battery remains committed to sustainable manufacturing and technical excellence. Their ability to mass-produce advanced cylindrical cells ensures that they remain a pivotal player in the global transition toward electrification.
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