The 3.7V 4000mAh Tablet Lithium Battery (Model 3080135) serves as a dependable power foundation for demanding portable electronics. Encased in a smooth, durable aluminum-plastic composite film, this lithium-polymer cell offers a sleek, space-saving footprint while delivering substantial energy reserves. Engineered specifically for continuous daily operation, the battery provides a consistent 3.7-volt output, ensuring that devices remain powered through extended shifts or long usage periods. The physical construction feels solid yet remarkably lightweight, allowing engineers to integrate it effortlessly into slim device profiles without adding unnecessary bulk. Pre-equipped with a rigorously tested protection circuit board (PCB) and standardized AWG22 wiring, this power module is ready for immediate deployment. It eliminates the need for secondary safety modifications, streamlining the assembly process. Whether you are developing the next generation of industrial tablets or upgrading existing medical monitors, this 4000mAh cell provides the essential balance of sustained energy delivery, compact form factor, and uncompromising operational safety.
Optimized Energy Density: Delivers a true 4000mAh capacity within a remarkably thin 3.0mm profile, extending device runtime while maintaining a slim structural design for space-constrained electronics.
Comprehensive Safety Architecture: The integrated intelligent protection board actively monitors voltage and current, instantly halting operations during overcharge, over-discharge, or short-circuit events to protect both the internal chemistry and the host device.
Strict Quality Control & Consistency: Before leaving the facility, every single unit undergoes 100% capacity sorting, high-temperature aging, and internal resistance testing. This ensures that large-scale procurement orders exhibit identical performance characteristics, eliminating batch-to-batch variance.
Deep Customization (OEM/ODM): We adapt the power solution to your exact structural requirements. From tailoring the terminal connectors (such as JST or Molex) and wire lengths to modifying the protection board parameters, the battery pack can be customized to fit unique device architectures perfectly.
Global Compliance & Certifications: Backed by a comprehensive suite of authoritative documentation, including UN38.3, MSDS, RoHS, and CE certifications. This guarantees environmentally responsible materials (free from heavy metals like lead and mercury) and ensures smooth, barrier-free customs clearance for international markets.
Extended Cycle Longevity: Utilizing premium internal materials and precise manufacturing techniques, the cell easily surpasses 500 charge-discharge cycles while retaining at least 80% of its original capacity, reducing the frequency of field replacements.
Ready-to-Deploy Configuration: Shipped with pre-soldered wires and protective circuitry, significantly reducing your internal assembly time and labor costs during the manufacturing phase.
Model Number: | 3080135 (Typically indicates thickness 3.0mm, width 80mm, length 135mm) |
Nominal Capacity: | 4000mAh (0.2C discharge) |
| Nominal Voltage: | 3.7V |
| Charging Voltage: | 4.2V ± 0.05V |
| Discharge Cut-off Voltage: | 3.0V (Protection board activated) |
| Standard Charging Current: | 0.5C (approximately 2000mA) |
| Maximum Charging Current: | 1C (4000mA, recommended) |
| Standard Discharge Current: | 0.5C (approximately 2000mA) |
| Maximum Continuous Discharge Current: | 1C (4000mA, recommended) |
| Cycle Life: | ≥ 500 cycles (0.5C charge/discharge, to 80% of initial capacity) |
| Operating Temperature: | Charging: 0°C ~ +45°C; Discharging: -20°C ~ +60°C |
| Storage Temperature: | -20°C ~ +45°C (For storage longer than one month, it is recommended to store at 50% charge in a cool, dry place) |
| Protection Functions： | Overcharge, over-discharge, overcurrent, short circuit protection |
| Wire Specifications: | Standard configuration length approximately 100mm, wire gauge AWG22 (customizable according to customer requirements) |
| Battery Weight: | Approximately 85g (including protection board and wires) |
| Casing Material: | Aluminum-plastic composite film (metal casing or insulating sleeve can be added upon request) |
Thanks to its substantial 4000mAh capacity, dependable safety mechanisms, and adaptable flat profile, this polymer lithium cell serves as the primary energy source for a diverse array of professional and consumer electronics. It is engineered to provide a 100% precise physical and electrical match for mainstream tablet computers and industrial equipment, acting as a reliable equivalent for various original manufacturer part numbers (including specific Samsung and Barnes & Noble e-reader/tablet battery configurations).
Professional Tablets & E-Readers: Perfectly matches the internal cavities of standard tablet computers, mobile POS systems, and commercial e-readers, ensuring long hours of screen-on time without frequent recharging.
Smart IoT & Tracking Hardware: Delivers consistent, low-drain power for smart home central controllers, remote GPS trackers, and environmental data acquisition terminals that require months of standby reliability.
Portable Medical Devices: Provides stable voltage for handheld diagnostic equipment and portable patient monitors, meeting the stringent performance criteria required for critical healthcare applications.
Industrial & Field Equipment: Powers rugged handheld barcode scanners, non-destructive testing instruments, and emergency LED lighting systems used in demanding environments where power failure is not an option.
Digital & Communication Gear: Acts as a dependable power source for two-way walkie-talkies, portable Bluetooth speakers, and backup power supplies, maintaining clear audio and connectivity.
Consumer Electronics: Suitable for specific personal devices like electronic toys and models, provided the discharge capacity aligns with the motor's current draw requirements.
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Dedicated Charging Protocols: Always utilize a verified constant current/constant voltage (CC/CV) lithium-ion charger. Connecting the cell to non-standard, unregulated power sources or attempting reverse charging will severely damage the internal chemistry and is strictly prohibited.
Environmental Restrictions: Prevent exposure to extreme thermal conditions. Charging or discharging the unit in environments exceeding 60°C or dropping below -20°C can degrade the polymer electrolyte. Keep the units strictly away from direct heat sources, open flames, or highly flammable materials.
Physical Integrity & Handling: During assembly, ensure the battery rests completely flat within the device housing. Avoid applying mechanical compression, twisting, or bending forces, paying special attention to protect the fragile edges of the aluminum-plastic film and the soldered wiring terminals.
Prohibited Destructive Actions: Never attempt to puncture, dismantle, or intentionally drop the battery. Submerging the unit in water or allowing conductive materials to bridge the positive and negative leads will trigger an immediate short circuit.
Multi-Cell Configurations: Do not wire multiple 4000mAh units in series or parallel configurations without conducting a thorough engineering evaluation. Unmatched internal resistances can lead to uneven power distribution and potential thermal events.
Visual & Sensory Monitoring: If you detect any unusual physical changes—such as the casing swelling, a sudden spike in surface temperature, a distinct sweet or metallic chemical odor, or fluid leakage—cease operation instantly. Isolate the affected unit in a fire-safe container.
End-of-Life Management: Once the cell surpasses its usable cycle life and can no longer hold a functional charge, do not discard it in standard waste streams. It must be processed through certified local recycling facilities in accordance with regional environmental regulations.
A1: Theoretically, utilizing a standard 2000mA (0.5C) input current will complete the charging cycle in approximately 2.5 hours, which includes the final constant voltage saturation phase. While applying a maximum 4000mA (1C) current will accelerate this process, we strongly recommend maintaining a 0.5C rate to preserve the optimal long-term health and structural integrity of the polymer layers.
A2: The pre-installed PCB acts as an active guardian for the cell, delivering four critical safeguards: 1) It severs the charging pathway if the single-cell voltage climbs beyond the 4.25V-4.30V threshold; 2) It halts discharging when the voltage depletes to approximately 2.5V-3.0V, preventing deep discharge damage; 3) It interrupts the circuit if the operational current surges past a predetermined 6-8A limit; 4) It reacts in under 1 millisecond to completely shut down the system upon detecting a hard short circuit.
A3: The nomenclature 3080135 strictly defines the physical footprint of the bare cell itself (3.0mm thickness, 80mm width, and 135mm length). Because the protection board is meticulously soldered to one edge, it typically adds a few millimeters to the overall length or width. We advise consulting our engineering team to confirm the final, fully assembled dimensions before finalizing your device's internal cavity design.
A4: The suitability relies entirely on your equipment's power draw. This specific model supports a maximum continuous discharge of 1C (4000mA). While excellent for sustained, moderate-drain electronics, it may not supply the instantaneous burst current required by racing drones or heavy-duty motorized tools. It is perfectly optimized for devices prioritizing extended operational longevity over rapid energy bursts.
A5: For prolonged storage, the battery should be kept in a climate-controlled, dry environment ideally between 15°C and 25°C. Crucially, adjust the charge level to roughly 50% (translating to a resting voltage of 3.8V-3.9V) before storage. We recommend performing a routine voltage check every three to six months; if the reading falls below 3.3V, apply a brief maintenance charge to prevent the cell from slipping into an unrecoverable deep-discharge state.
A6: Absolutely. As Class 9 dangerous goods (UN3480), these batteries require specialized handling. To guarantee safe transit, we utilize professional anti-static, impact-resistant individual packaging that fully complies with international shipping standards. Supported by complete UN38.3 and MSDS documentation, our experienced logistics partners manage the complex dangerous goods declarations, ensuring fully compliant and secure delivery to your designated facility.
A7: Yes, we understand the diverse procurement needs of enterprise buyers. We support highly flexible Minimum Order Quantities (MOQs) tailored to your production schedule. Furthermore, we implement a transparent, volume-based discount program. As your purchasing volume scales up, the per-unit cost significantly decreases, allowing you to optimize your component budget without compromising on energy reliability.
A8: We stand behind the reliability of our power solutions by offering a definitive 12-month warranty tailored for commercial partners. Should you encounter any integration challenges or performance anomalies, our dedicated technical support team is available to assist with diagnostics and troubleshooting. This comprehensive backing minimizes your maintenance risks and ensures smooth ongoing production.
Disclaimer: This product description is for reference only. Specifications may change due to improvements in manufacturing processes without prior notice. Please obtain the latest specifications and conduct thorough testing before final design and use. The manufacturer is not liable for any loss or injury caused by improper use, installation, storage, or modification of this product.
