EM3ev King Shark 1404 52V 20Ah eBike battery
From: $399.00 (USD)
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Description
⚡ EM3ev King Shark 1404 — 52V 20Ah (988Wh) – 14S4P-50GB
Compact Long-Range Downtube Pack | Samsung 21700 Cells | Smart BMS | Since 2011
The EM3ev King Shark 1404 is a 52V 19.6Ah eBike battery built with Samsung 50GB cells (988Wh) downtube eBike battery built around genuine Samsung 21700-50GB cells in a 14S4P configuration. With a 40A temperature-protected smart BMS, IP65-rated King Shark case and Reention rail mount, it is an excellent choice for riders searching for the best 52V downtube battery for eMTB, trekking bikes and daily commuters. This pack delivers stable power for popular mid-drive and hub motor systems while keeping weight reasonable for all-day rides.
🔋 52V 19.6Ah eBike Battery – Key Highlights
- Capacity / Energy: 19.6Ah / 988Wh (52V-class long-range pack)
- System Voltage: 52V (14S, 50.4V nominal, 58.8V full)
- Configuration: 14S4P using Samsung 21700-50GB cells
- Continuous Discharge: 40A smart BMS — ideal for powerful mid-drive motors
- Case / Mount: Reention King Shark downtube rail
- Ingress Protection: IP65 dust & water resistant
- Bluetooth: Included smart BMS with app monitoring
- Approx. Weight: ~4.8 kg
📊 Technical Specifications
| Model | King Shark 1404 |
|---|---|
| Pack Configuration | 14S4P – Samsung 21700-50GB |
| System Voltage | 52V (Nominal 50.4V / Full Charge 58.8V) |
| Discharge Cut-Off Voltage | 37.8V |
| Nominal Capacity | 19.6Ah |
| Energy | 988Wh (50.4V × 19.6Ah) |
| Continuous Discharge Current | 40A |
| Peak Discharge (short-term) | Higher peaks supported for acceleration & climbs (within BMS limits) |
| Cell Type | Samsung 21700-50GB (NMC, Grade-A) |
| Battery Chemistry | NMC (Lithium-ion) |
| BMS | 1103A-FPS smart BMS, 40A continuous, temperature protected, included Bluetooth |
| Bluetooth Monitoring | Yes (included) – pack voltage, current, cell group status & temperature |
| Charge Connector | Reention side DC barrel port – supports 4A–6A 52V lithium chargers |
| Discharge Connector | Reention base contacts (XT90 / XT60 / Anderson pigtail options on request) |
| Typical Charging Time | Approx. 5.0 h @ 4A • 4.0 h @ 5A • 3.3 h @ 6A (from low SOC to full) |
| Cycle Life | ≥ 500 cycles (≥80% remaining capacity under standard conditions) |
| IP Rating | IP65 (dust-tight and resistant to water jets) |
| Certifications | UN38.3 transport certified – additional lab reports available for OEM projects / 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 |
| Approx. Weight | ~4.8 kg (including case & BMS) |
🛠️ Built for Real-World Riders
- Designed as a compact long-range 52V eBike battery for eMTB, trekking and commuting.
- 40A continuous output makes it a strong match for high-torque mid-drive motors and powerful hub motors.
- Reention King Shark rail mount offers secure attachment on rough off-road terrain.
- Excellent choice if you are looking for the best 52V downtube battery for eMTB with real-world range.
📱 Smart BMS & Bluetooth
- Smart BMS with Bluetooth app for live pack data, including voltage, current, temperature and cycle count.
- Perfect for riders wanting a 52V battery with Bluetooth monitoring and detailed diagnostics.
- Customizable current limits and protection thresholds to match your controller and riding style.
🧩 Customizable Power Solutions
- Connector options: XT90 / XT60 / Anderson and OEM-specific plugs.
- Custom harness length and output settings available for OEM and fleet projects.
- Charger options (4A–6A) optimized for either battery longevity or faster turnaround.
🧪 Quality & Testing
- All packs built with cell matching, load testing and BMS verification before shipping.
- Spot-welded nickel / copper busbars ensure low resistance and reduced heating at high currents.
- IP65 sealing and vibration checks on final assembly for dependable outdoor use.
🚚 Shipping Information
- Ships within 3–5 business days after order confirmation.
- UN38.3 certified lithium battery packaging for compliant global air & ground transport.
- Worldwide shipping with full tracking (US/EU/UK/AU regions supported).
- Protective, anti-vibration packaging to help ensure the battery arrives safely.
- 24/7 customer support for shipping updates and technical questions.
⚠️ Safety & Handling
- Use only compatible 52V lithium-ion chargers; never charge unattended or near flammable materials.
- Do not crush, puncture, short-circuit or immerse the pack in liquids.
- Store between 0–45 °C and avoid long-term storage at 100% state of charge.
- Ensure the Reention rail and lock system are properly installed and periodically inspected.
🏆 Why Choose EM3ev
- 🔷 Founded in 2011 – over a decade of experience building high-performance eBike batteries.
- 🌍 Trusted by thousands of riders worldwide for reliable 52V and 48V eBike battery systems.
- 🧰 Engineering-led team focused on real-world riding conditions, not just lab numbers.
- 💬 Dedicated pre-sales and after-sales technical support for riders and OEM partners.
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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