The ASOL18650-8P is a high-capacity cylindrical Li-ion battery pack built on an 8P architecture — eight premium 18650 cylindrical cells in parallel, delivering 3.7V nominal voltage with a massive 20800mAh capacity and 76.96Wh of energy. This single-cell voltage platform with ultra-high capacity is the go-to solution for consumer electronics, portable backup battery, and low-voltage DC applications that demand extended runtime without the complexity of series configurations.
With 76.96Wh total energy, the ASOL18650-8P sits right at the sweet spot for mainstream portable power bank specifications — close to the 100Wh airline limit while delivering enough capacity for multiple smartphone charges, hours of camping light runtime, or reliable backup for small appliances.
At the core of every pack is an integrated BMS that continuously monitors cell-level voltage, current, and temperature — providing multi-layer protection against overcharge, over-discharge, overcurrent, and short circuit. Safe operation from 0°C to +60°C.
Every unit ships from our quality-controlled production facility after passing full inspection: individual cell voltage matching (±10mV tolerance), complete charge/discharge cycle verification, and BMS functionality testing.
Specifications
| Parameter | Details |
|---|---|
| Chemistry | cylindrical lithium-ion (18650 cells) |
| Model | ASOL18650-8P |
| Nominal Voltage | 3.7V |
| Capacity | 20800mAh |
| Energy | 76.96Wh |
| Charging Voltage | 4.2V |
| Configuration | 8P (8 Parallel) |
| BMS Protection | Overcharge / Over-discharge / Overcurrent / Short circuit / Temperature monitoring |
| Standard Connector | JST (custom connectors available) |
| Cycle Life | ≥500 cycles @ 80% capacity retention (1C charge/discharge, 25°C) |
| Operating Temperature | 0°C to +60°C (charge: 0°C to +45°C) |
| Dimensions | Approx. 130 × 65 × 25 mm (excluding wires & connector) |
| Weight | Approx. 380g |
| Manufacturer | ASOLENERGY TECHNOLOGY |
Applications
Where the 18650 8P is used
High-capacity USB-C PD banks for phones & tablets.
Portable equipment, camping devices and RV accessory power.
Camping lanterns, work lights & LED floodlights.
Battery pack power for solar lighting and backup devices.
Handheld fans, mini air coolers & USB appliances.
What Sets Us Apart
- Factory-Direct Pricing — No distributor markups. Competitive B2B rates directly from the manufacturer, with transparent quoting for any order size.
- Full OEM & ODM Flexibility — Connector type, wire gauge & length, heat-shrink or plastic housing, custom labeling, and branded packaging — all configurable to your specs.
- Integrated BMS Safety — Multi-layer electronic protection with cell-level temperature monitoring. Reduces field failures and warranty returns.
- Proven Cycle Durability — Grade-A 18650 cells with matched internal resistance (±5mΩ) deliver ≥500 cycles at 80% capacity retention.
- Fast Sample Turnaround — Custom prototype samples ready in 5-7 business days for mechanical fit, electrical performance, and system integration testing.
- 100% Outgoing Inspection — Every pack individually tested for voltage accuracy, discharge capacity, and BMS function before shipment.
Packaging & Shipping
| Item | Details |
|---|---|
| Individual Packaging | Anti-static bag + foam cushion inside individual box |
| Box Quantity | 20 pcs / carton (customizable) |
| Carton Dimensions | Approx. 45 × 32 × 25 cm (subject to final packing) |
| Carton Weight | Approx. 10–12 kg |
| Shipping Options | Express (DHL / FedEx / UPS), Air freight, Sea freight |
| Shipping Terms | EXW, FOB, CIF, DDP available |
| Certifications | CE, RoHS, UN38.3, MSDS (available upon request) |
Frequently Asked Questions
Can I customize the connector and wire specifications?
Yes. We support JST, Molex, JST-PH, XT60, EC5, and other industry-standard connectors. Wire gauge, length, and polarity are all customizable to match your device interface. Just send us your pinout diagram or sample connector.
What is the minimum order quantity (MOQ)?
Standard configurations: 50 pcs. Fully custom designs: 100-500 pcs depending on the level of customization. Sample orders of 1-10 pcs are accepted for evaluation purposes.
Do you provide engineering support for device integration?
Absolutely. Our engineering team can supply pinout diagrams, charge/discharge characteristic curves, mechanical dimension drawings (2D/3D), and BMS communication protocol documentation.
What certifications are available?
All standard packs are shipped with CE, RoHS, UN38.3, MSDS compliance documentation.
Is this battery suitable for power bank manufacturing?
Yes. With 20800mAh capacity and 76.96Wh energy, the ASOL18650-8P is an excellent core cell for high-capacity power bank products. The 3.7V single-cell voltage simplifies power management circuit design compared to multi-series configurations.
Contact Us
| Channel | Information |
|---|---|
| info@asolbattery.com | |
| +86 157 7985 8703 | |
| Website | www.asolbattery.com |
| Response Time | Within 24 hours on working days |
Sample lead time: 5-7 business days | Bulk production: 15-25 business days
Need a reliable high-capacity power solution for your consumer electronics or backup battery product? Send us your application scenario, connector requirements, and target quantity — we’ll respond within 24 hours with a factory-direct quote.
Need a different size or capacity? Explore ASOL’s full cylindrical battery pack range →
