3.6V 3500mAh 18650 Rechargeable Li-ion Battery Pack
Our protected 3.6V 3500mAh 18650 Rechargeable Li-ion Battery Pack delivers robust performance tailored for professional applications in audio systems, security alarms, and portable lighting. Engineered for superior safety, reliability, and high discharge rates, it empowers your products with stable power and extended lifespan—so you can offer more dependable solutions with fewer safety risks and lower after-sales overhead.
Ideal for OEMs, system integrators, and demanding environments where consistent power and durability cannot be compromised.
Key features：
- Configuration :1S1P, made of 1pcs Samsung 35E single cell.
- Premium-grade cells from reputable brands
- Built with PCB with overdischarge,overcharge and short circuit protections
- 10A high discharge rate with high ouput power
| No. | Item | Parameter | Remark |
|---|---|---|---|
| 1 | Nominal Voltage | 3.6V | 3.6V/Cell |
| 2 | Nominal Capacity | 3500mAh | @0.2C |
| 3 | Minimum Capacity | 3350mAh | / |
| 4 | Shipment Voltage | / | / |
| 5 | Initial Internal Impedance | ≤100mΩ | AC 1KHZ |
| 6 | Standard Charge Voltage | 4.2V | 4.2V/Cell |
| 7 | Standard Charge Current | 1A | @0.2C |
| 8 | Max. Charge Current | 3.5A | BMS Limit |
| 9 | Standard Discharge Current | 0.7A | @0.2C |
| 10 | Max. Discharge Current | 7A | / |
| 11 | Burst Discharge Current | / | / |
| 12 | Discharge Cut-off Voltage | 2.5V | 2.5V/Cell |
| 13 | Cycle Life | ≥500 cycles | Retention: ≥80% |
| 14 | Charge Temperature | 0°C~45°C | Standard Charge |
| 15 | Discharge Temperature | -20°C ~70°C | Standard Discharge |
| 16 | Storage Temperature | -20°C~ 45°C | ≤3 Months |
| 0°C ~ 25°C | ≤1 Year | ||
| 17 | Weight | About 60g | / |
| 18 | Special Request | / | / |
3.7V 4000mAh 18650 Battery Pack FAQs
What satety protections are built into the pack?
Each pack includes a built-in PCB that provides comprehensive protection against:over-charging, over-discharging, short-circuit, over-current.
Which brand of cell is used in this battery pack?
We use only permium-grade, genuine Samsung 35E cells in this pack. This ensures you receive exceptional capacity, longevity, and consistent perfoemance backed by one of the most reputtable brands in the industry.
Is this battery pack compatible with my device?
This standard 3.7V 18650 pack is compatible with a vast range of devices designed for a single-cell lithium-ion battery. Please check your device’s required voltage, capacity, and physical size specifications to ensure a perfect fit.
Do you offer custom wirting, or larger battery packs?
Absolutely！ We specialize in custom battery solutions. Please contact our surpport team to discuss your spcific requirements for capacity, voltage, connectors, or BMS configurations for larger packs.
How should I properly dispose of recycle this battery?
Please do not dispose of this battery with household waste. Follow your local regulations for recycling lithium-ion batteries. Many electronics store or recycling centers offer free battery recycling services.
Tailored Customization
Our design team can create custom battery designs for just about any device or machine.
Timely Delivery
Our efficient production and distribution process gets your product delivered in a timely manner.
Quality Guarantee
We stand by our products and guarantee you’ll be happy with your purchase.
