EM3ev King Shark 1304 – 48V 20Ah eBike Battery
From: £280.12 (GBP)
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Description
⚡ EM3ev King Shark 1304 — 48V 19.6Ah (917Wh) – 13S4P-50GB
High-Capacity 48V Downtube Pack | Samsung 21700 Cells | Smart BMS | Since 2011
The EM3ev King Shark 1304 is a premium 48V 19.6Ah eBike battery (917Wh) designed for riders needing strong daily range. As a high-capacity 48V replacement battery, it is built with genuine Samsung 21700-50GB cells (13S4P) and a 40A smart BMS. Housed in an IP65-rated Reention case, this pack is the ultimate upgrade for Bafang mid-drives and hub motors.
Its widely compatible Reention rail mount, compact footprint and engineering-focused construction make it ideal for eMTB, cargo bikes, trekking, and long-distance commuting. For riders looking for the best 48V downtube battery for eMTB or a long-range commuting solution, the King Shark 1304 delivers outstanding real-world performance.
🔋 Key Model Highlights
- Energy: 917Wh (13S high-capacity configuration)
- Capacity: 19.6Ah using Samsung 50GB cells
- Voltage: 48V nominal system (13S)
- Continuous Discharge: 40A smart BMS
- Mount: Reention King Shark downtube rail
- Supports Internal Controller: Integrated Controller Mounting Plate (controller not included)
- Protection: IP65 dust & water resistance
- Bluetooth: Optional smart BMS
- Weight: approx. 4.6 kg
📊 Technical Specifications
| Model | King Shark 1304 |
|---|---|
| Pack Configuration | 13S4P – Samsung 21700-50GB |
| System Voltage | 48V (Nominal 46.8V / Full 54.6V) |
| Discharge Cut-Off | 35.1V |
| Capacity | 19.6Ah |
| Energy | 917Wh |
| Continuous Discharge | 40A |
| Cell Type | Samsung 21700-50GB (NMC) |
| BMS | 1103A-FPS smart BMS, temp protected, optional Bluetooth |
| Charge Connector | Reention DC barrel port (supports 3A–5A 48V chargers) |
| Discharge Connector | Reention rail base (XT90 / XT60 / Anderson optional) |
| Typical Charging Time | ~5 h @4A • ~4 h @ 5A • ~3.4 h @ 6A |
| IP Rating | IP65 (dust-tight & water-resistant) |
| Cycle Life | 500+ cycles (≥80% remaining capacity) |
| Certifications | UN38.3 transport certified / CE |
| Operating Temperature (Discharge) | -10 °C to +45 °C |
| Charging Temperature | 0 °C to +45 °C |
| Storage Temperature | 0 °C to +45 °C (cool, dry environment recommended) |
| Warranty | 1 year |
| Weight | Approx. 4.6 kg |
🛠️ Built for Real-World Riders
- Perfect for high-power Bafang mid-drive systems (BBS02, BBSHD).
- Strong match for cargo bikes, trekking bikes and long-distance commuting.
- Secure Reention rail mount ideal for trail, gravel and urban riding.
- Excellent option for riders needing a long-range 48V eBike battery pack.
📱 Smart BMS & Bluetooth Monitoring
- Real-time Bluetooth monitoring: voltage, cell groups, temperature & current.
- Supports popular searches like 48V battery with Bluetooth monitoring.
- Configurable BMS current limits for OEM and advanced builds.
🧩 Customization Options
- Connector choices: XT90 / XT60 / Anderson.
- Custom harness lengths for unique frame geometries.
- OEM branding, connectors and tuning available.
🧪 Quality & Testing
- All packs undergo strict cell matching, load tests and BMS validation.
- Nickel–copper hybrid busbars ensure low resistance and long-term reliability.
- Final assembly includes vibration checks and IP65 sealing inspection.
🚚 Shipping Information
- Ships within 3–5 business days after order confirmation.
- UN38.3 certified lithium battery packaging suitable for global transport.
- Worldwide shipping with tracking (US/EU/UK/AU supported).
- Anti-shock protective foam packaging.
- 24/7 customer support for logistics & technical questions.
⚠️ Safety & Handling
- Use only certified 48V chargers; do not charge unattended.
- Avoid puncture, crushing, short-circuit or immersion.
- Store between 0–45°C and avoid extended full-charge storage in high heat.
🏆 Why Choose EM3ev
- 🔷 Founded in 2011 — over 10 years of eBike battery innovation.
- 🌍 Trusted globally for dependable 48V and 52V systems.
- 🧰 Real-world tested designs for mid-drive & hub motors.
- 💬 Engineering-driven support team.
EM3ev — Power That Moves You Forward.
Looking for a battery without branding? We also offer an unbranded (OEM) version of this pack for custom builds or discreet installations. Click here to learn more.⬅️
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