For battery cells, review the product description for real-world current recommendations, testing notes, and application guidance. Manufacturer maximum ratings should be treated as limits, not the best target for long-term pack health.
Description
BAK 45D 21700 Tabless Cell - 4500mAh 60A - High-Performance Lithium-Ion Cell - In stock
Continuous discharge: 60A
The BAK 45D 21700 4500mAh 60A is a modern high-drain lithium-ion cell designed for demanding power applications. With 4500mAh typical capacity, low internal resistance, and a 60A continuous discharge rating with 80°C cutoff, this cell is a strong option for power tools, electric scooters, custom battery packs, and other high-load builds.
This cell uses a tabless design, which helps reduce resistance, improve current flow, and spread heat more evenly under load. That makes it especially attractive for builders looking for better thermal behavior and lower voltage sag compared to older traditional designs.
According to BAK product information, the INR2170-45D is positioned as a balance between high power and good capacity, targeting applications such as consumer electronics, smart tools, and micromobility. It is a serious performance cell for users who need more than just capacity.
Specifications:
| Model | INR2170-45D |
| Brand | BAK |
| Size | 21700 |
| Nominal Capacity | 4500mAh (Min. 4400mAh) |
| Nominal Voltage | 3.6V |
| Typical Energy | 16.2Wh |
| Max Voltage | 4.2V |
| Min Discharge Voltage | 2.5V |
| Max Continuous Discharge | 60A (80°C cutoff) |
| Standard Charge Current | 2.2A |
| Max Charge Current | 13.2A |
| Internal Resistance | Approx. 3.4mΩ |
| Chemistry | INR / Li-ion |
| Positive Terminal | Flat Top |
| Design | Tabless |
| Protected | No |
| Rechargeable | Yes |
| Approx. Weight | 69g |
| Dimensions | 21.30mm x 70.50mm |
| Datasheet | Datasheet |
Applications:
- ✅ High-Performance E-Bikes
- ✅ Electric Scooters
- ✅ Power Tools
- ✅ Heavy-Duty Battery Packs
- ✅ Custom 21700 Builds
DIY500AMP.COM Design - High-Drain Ready, Tabless Performance
⚠️ 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
- Must Be Used in a Protected Pack
- Spot Weld Only - Do Not Solder Directly
- Store in Fireproof Container
- Inspect Before Use
- Follow Manufacturer Specs Strictly
Orders ship from Florida when inventory is available. Lithium-ion cells require proper handling, protected packs, correct chargers, and safe storage. Do not solder directly to battery terminals.
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Let customers speak for us
Wow, these cells are great!
I purchased some of these tabless cells to try on my 1S 3" HD Toothpick drone build, and, albeit a bit heavy for 1S, it flies pretty well. Not a freestyle monster, but an endurance beast with decent send. These cells shrug off the demands of a BETAFPV Matrix HD AIO flight controller/12A ESC and some 1202.5 11000KV motors. I'm getting 15+ minutes of speedy flight time from a single cell trying not to go below 3.2V, and about 20+ minutes cruising. Love these cells and will definitely buy more when time comes, only from DIY500AMP, who are terrific!
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