Description
BAK INR2170-45D – Premium A04 Grade (4560–4600mAh) | Fresh 2025 Batch | CCC Certified | Tabless Design
Why Choose Our BAK 45D?
Not all BAK 45D cells are the same. Many sellers offer A02 grade cells from older 2024 batches with lower actual capacities. Our units are from a fresh 2025 production run and graded A04 — the highest commercial grade currently available — with actual capacities ranging from 4560 to 4600mAh. You get better consistency, higher capacity, and the latest improvements in production quality, all verified with the official CCC certification mark.
Tabless Design Advantage – Lower Resistance, Better Cooling
The BAK INR2170-45D uses an advanced tabless electrode design to reduce internal resistance and spread heat more evenly. This improves both efficiency and longevity, especially under heavy loads.
Key Advantages
- A04 Grade – Higher quality than A02, with 4560–4600mAh actual tested capacity
- 2025 Production – Newest batch with improved consistency
- CCC Certified – Official compliance and traceability
- Tabless Internal Design – Reduced heat and better current flow
- 60A Continuous Discharge – With 80°C thermal cutoff protection
- 600+ Cycles – Long life even under 30A discharge
Specifications
| Specification | Details |
|---|---|
| Brand | BAK |
| Model | INR2170-45D |
| Grade | A04 (4560–4600mAh) |
| Production Year | 2025 |
| Certification | CCC Logo |
| Battery Type | 21700 |
| Nominal Voltage | 3.6V |
| Rated Capacity | 4400mAh |
| Typical Capacity | 4500mAh |
| Rated Energy | 15.84Wh |
| Typical Energy | 16.2Wh |
| Limited Charging Voltage (Ucl) | 4.2V |
| Upper Charging Voltage (Uup) | 4.25V max (absolute limit) |
| Discharge Cutoff Voltage (Udo) | 2.0V (absolute), recommended 2.5V |
| Standard Charge Current | 2.2A |
| Max Charge Current | 13.2A |
| Standard Discharge Current | 880mA |
| Max Discharge Current | 60A (with 80°C cutoff), 30A without cutoff |
| Cycle Life | ≥600 cycles @ 30A to 2.5V, ≥2640mAh (≥60%) |
| Internal Resistance | ≤5 mΩ (AC, 1kHz) |
| Diameter | Max 21.45mm |
| Length | Max 70.75mm |
| Weight | ≤69g |
| Operating Temp (Charge) | 0°C to 45°C |
| Operating Temp (Discharge) | -20°C to 60°C (up to 80°C surface in use) |
| Max Surface Temp (Charge) | 55°C (must cool below 45°C to recharge) |
| Max Surface Temp (Discharge) | 80°C (must cool below 60°C to re-discharge) |
| Storage Temp (1 month) | -20°C to 60°C |
| Storage Temp (3 months) | -20°C to 45°C |
| Storage Temp (1 year) | -20°C to 25°C |
| Humidity Range | 0–60% RH (non-condensing) |
BAK 45D Datasheet: Download
Safety Warning for Lithium-Ion Battery Usage
Customers should have a clear understanding of lithium-ion battery handling and safety before making a purchase. Lithium-ion batteries are highly sensitive and may pose fire, burn, or explosion risks if improperly handled. Always charge batteries on fire-resistant surfaces, and never leave them charging unattended.
By purchasing, you assume full responsibility for any injury, damage, or loss arising from the incorrect use or handling of lithium-ion batteries or chargers. Compatibility with specific devices is not guaranteed. Only charge using a smart charger designed specifically for this battery type, and do not mix old or used batteries with new ones.
Important Usage Guidelines:
- Not for Use in E-Cigarettes or Similar Devices: Lithium-ion batteries present a serious risk of injury, property damage, or even death if improperly used.
- Risk of Fire and Explosion: Misuse can cause batteries to ignite, explode, or release harmful gases.
- Always Use in a Protected Pack: Ensure batteries are used within intended specifications and supported by appropriate circuitry.
- Proper Storage and Handling: Store batteries in protective cases, away from metal items to prevent short circuits.
- Inspection Prior to Use: Do not use batteries with damaged wrappers, torn insulators, or visible damage.
- Follow Manufacturer's Charging Specifications: Avoid overcharging or over-discharging, and never alter, dismantle, puncture, crush, or burn.
- Heat and Water Precautions: Do not expose batteries to high temperatures or any liquids.
- Assembly Guidelines: Batteries should only be spot welded; do not solder directly onto battery terminals.
Users are expected to have battery-handling knowledge before purchasing. By using these batteries, you acknowledge that usage is solely at your own risk, and you take full responsibility for any resulting consequences.
For Resellers: Please ensure all safety information is passed along to end users to promote safe handling and proper use.