THLB 18650 LiFePO4 Battery 3.2V Cylindrical Lithium Ion Battery
18650 Rechargeable LiFePO4 3.2V Lithium Ion Cylindrical Battery with 1500mAh/1600mAh capacity and operating temperature range of -20°C to 60°C.

Product Specifications
| No. | Item | Standard | Note |
|---|
| 1 | Standard Capacity | 1500mAh | 0.5C (current value of 2200mA at 1C) |
| 2 | Capacity Range | 1450~1550mAh | 0.5C |
| 3 | Standard Voltage | 3.2V |
|
| 4 | Alternating Internal Resistance | ≤45mΩ |
|
| 5 | Charge Conditions | Cut-off Voltage: 3.65±0.05V Cut-off Current: 0.01C | Constant-current charge to 3.65V at 0.5C, constant voltage charge to stop until 0.01C mA |
| 6 | Max. Charging Current | 1.5A |
|
| 7 | Discharge Cut-off Voltage | 2.5V |
|
| 8 | Charge Current | 0.5-1C |
|
| 9 | Discharge Current | 0.5-1C |
|
| 10 | Max. Continuous Discharge Current | 4.5A |
|
| 11 | Pulse Discharge Current | 10A, 10s |
|
| 12 | Cycle Characteristic | 2000 cycles (100% DOD) 4000 cycles (80% DOD) 7000 cycles (50% DOD) | Residual capacity no less than 70% of rated capacity at 0.5C Charge, 1C Discharge rate |
| 13 | Working Temperature | Charge: 0°C~55°C Discharge: -20°C~60°C |
|
| 14 | Storage Temperature | -20°C ~ 45°C | Short-term storage (< 3 months) |
| 15 | Battery Weight | 42g |
|
Manufacturing Process
The positive electrode material uses lithium cobaltate LiCoO2, ternary material Ni+Mn+Co, or lithium manganate LiMn2O4 with conductive agent and binder, coated on aluminum foil. The negative electrode uses layered graphite with conductive agent and binder coated on copper foil base tape, with advanced nanoporous carbon for negative-layered graphite particles.
Production Steps
- Pulping: Mixing powdery positive and negative active materials with special solvent and binder to form slurry
- Coating film: Uniform coating of positive and negative electrodes on metal foil surface using automatic coating machine, followed by automatic drying and cutting into pole pieces
- Assembling: Layering process of positive electrode sheet-separator-negative electrode sheet-separator from top to bottom, electrolyte injection, sealing, and welding of positive and negative electrodes
- Chemicalization: Finished battery placement in test cabinet for charging and discharging tests, screening qualified batteries for delivery
Frequently Asked Questions
Q1. Can I have few free samples for evaluation?
A: Yes, free samples are available, but shipping cost is not covered.
Q2. What about the lead time?
A: Samples need 3-5 days. Mass production time is approximately 2-3 weeks.
Q3. Do you have any MOQ limit for bulk order?
A: MOQ = 100 pieces.
Q4. How do you ship the goods and how long does it take to arrive?
A: Samples and small quantity trial orders: Courier shipping with door-to-door delivery; normally 6-10 days. Bulk orders: Air shipping or Sea shipping.
Q5. How to proceed an order for Lithium ion cell?
A: Please confirm the cell models you're interested in. We'll send specifications and best quotation. After confirmation and payment, production begins.
Q6. Is it OK to print my logo on lithium ion cell product?
A: Yes, OEM services are welcomed.
Q7: Do you offer guarantee for the products?
A: Yes, 3-5 Years Warranty provided.