3.7V 5000mAh 18650 Li-ion Battery Pack with ZHR-2P Connector
Upgrade your device’s power with this 3.7V 5000mAh 18650 battery pack. Delivering 18.5Wh of high-density energy, this rechargeable battery features an integrated protection circuit for safety and a standard ZHR-2P connector for easy installation. Its compact, flat design (68.5mm x 38.5mm x 19.5mm) makes it the perfect replacement or upgrade for consumer electronics and DIY projects requiring long-lasting power.
Description
Model 18650 – High Capacity Lithium Battery Pack
Voltage: 3.7V | Capacity: 5000mAh (18.5Wh) | Size: 68.5×38.5×19.5mm

Engineered for superior runtime, this 18650 Lithium Battery Pack combines high capacity with reliable performance. The internal protection circuit safeguards the cells against overcharging, over-discharging and short circuits, ensuring a long service life.
Equipped with high-quality UL1571 AWG24 wires and a ZHR-2P connector, this battery is ready for direct integration into your devices. Whether you are powering portable audio equipment or upgrading an older gadget, this 18.5Wh power source provides the stability and endurance you need.
Technical Specifications
| Battery Type | Lithium Ion Battery |
| Part Number | 18650 |
| Voltage @ Capacity | 3.7V @ 5000mAh (18.5Wh) |
| Protection Circuit | Yes (PCM Included) |
| Thermistor (NTC) | / |
| Wires | UL1571 AWG24 50mm |
| Connector | ZHR-2P |
| Dimensions (L x W x T) | 68.5mm x 38.5mm x 19.5mm |
| Charge Current | 0.2C to 0.5C (Standard Charge) |
| Discharge Current | 0.5C to 1.0C (Continuous) |
| Storage Temperature | -20°C to +60°C |
Core Advantages
- ✔
Ultra-High Capacity: 5000mAh (18.5Wh) offers significantly longer runtimes compared to standard single-cell batteries. - ✔
Enhanced Safety: Built-in protection circuit prevents damage from voltage spikes and short circuits. - ✔
Plug-and-Play Design: Pre-installed ZHR-2P connector and 50mm wires simplify the installation process. - ✔
Space-Efficient: Flat rectangular form factor fits easily into slim device compartments.
Perfect For Applications
Bluetooth speakers, headphones and amplifiers.
Wireless sensors and portable hubs.
Custom power banks and electronics prototyping.
Customization Services (OEM/ODM)
We understand that every application is unique. We offer professional OEM and ODM customization to tailor this 18650 battery pack to your specific needs:
- Connector Options: Replace ZHR-2P with JST, Molex or bare wires as required.
- Voltage & Capacity: Custom configurations available by adjusting cell arrangements.
- Casing: Options for shrink wrap, plastic casing or custom branding labels.
- Wire Length: Adjustable wire lengths to fit your internal assembly layout.











