SMALL DEN 84V Smart Lithium Charger | 2A 3A 5A Fast Charger for 72V
SMALL DEN 84V Smart Lithium Charger | 2A 3A 5A Fast Charger for 72V
SMALL DEN 84V Intelligent Lithium-Ion Fast Charger Series – Premium Fan-Cooled Smart Power Supply (2A / 3A / 5A Models) for 20S 72V Electric Motorcycles, Scooters, and E-Bikes
Restore your torque and hit the asphalt faster. Engineered by SMALL DEN, this 84V Intelligent Lithium-Ion Charger Series delivers a high-quality, high-efficiency power replenishment system for 20S (72V Nominal) Lithium-Ion battery banks. Built with a rugged, structural composite shell and an integrated high-velocity internal cooling fan, this charger cuts through charging bottlenecks, offering scalable speed options up to 5.0 Amps to support high-performance urban two-wheelers.
Featuring precise automated Constant Current / Constant Voltage (CC/CV) charging logic, this premium power adapter monitors your pack's saturation levels, automatically shutting down current transfer the moment your cells hit maximum structural capacity.
🚀 Key High-Performance Features
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Tailored 20S 72V Calibration Grid: Specifically engineered to supply the exact 84.0-Volt DC peak output voltage line required to safely balance 72V lithium-ion scooter and motorcycle packs.
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Active High-Velocity Air Cooling: Built with an internal forced-air cooling fan that runs continuously during high-amperage current transfer, ensuring structural component longevity and low thermal profiles.
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Smart Auto-Stop Status Diagnostics: Take the guesswork out of your staging bay with clear, intuitive LED indicator light readouts:
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🔴 Solid Red Light: Active high-amperage fast charging in progress.
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🟢 Solid Green Light: Fully saturated, cells balanced, charging automatically cut off.
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⚡ Flashing LED Light: System failure or terminal anomaly detected.
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Wide System Amp Capacity Matching: Perfectly optimized to recharge a wide array of 72V power reserves, safely servicing packs from 10Ah, 15Ah, 20Ah, 25Ah, up to 30Ah.
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Global Auto-Sensing Voltage Core: Accepts wide input parameters (AC 100V–240V at 50/60Hz). We look at your shipping destination to automatically provide the proper wall plug standard (US, EU, UK, or AU).
📊 Master Amperage & Power Output Configuration
Select your desired charging speed variant from the dropdown options at checkout:
| Selectable Speed Model | Peak Power Consumption | Primary Battery Match Recommendation | Standard Output Plug |
| 84V 2A Standard | 180 Watts Max | 72V 10Ah – 15Ah Battery Packs | Coaxial DC 5.5mm × 2.1mm |
| 84V 3A Accelerated | 260 Watts Max | 72V 15Ah – 20Ah Battery Packs | Coaxial DC 5.5mm × 2.1mm |
| 84V 5A Rapid Charge | 450 Watts Max | 72V 20Ah – 30Ah Battery Packs | Coaxial DC 5.5mm × 2.1mm |
⚠️ Critical Battery Chemistry Restriction Warning
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LITHIUM-ION ONLY: This power supply is calibrated exclusively for standard Lithium-Ion (Li-ion) chemistries.
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DO NOT USE ON LIFEPO4: Never plug this charger into a Lithium Iron Phosphate (LiFePO4) battery pack. Doing so will cause severe battery cell mismatch and cause the charger unit to overheat excessively.
🛡️ 4-Tier Intelligent Safety Protection Grid
Holding elite international structural safety marks, including CE, FCC, and RoHS compliance certifications, the internal board protects your vehicle from operational terminal faults (High-concerned chemical: None):
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Over-Voltage Protection (OVP): Caps the absolute output line strictly at 84.0V to eliminate battery pack overcharging or bloating.
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Over-Current Protection (OCP): Regulates cell intake parameters smoothly to your pre-selected 2A, 3A, or 5A current threshold.
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Short-Circuit Automatic Isolation: Safely trips and shuts down power delivery if the terminal pins bridge or arc.
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Overload Defenses: Protects internal electronics from downstream draw anomalies during extended overnight connections.
🛠️ Pro Field Maintenance & Operational Guidelines
To maximize your battery life and maintain factory warranty protection, adhere to the following 5-step charging protocol:
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Connection Logic: Always plug the charger's DC coaxial plug into your battery port first, then connect the AC plug into the wall outlet.
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Saturation Top-Off: For maximum cell-to-cell string balancing, let the charger remain connected for 2 to 3 hours after the LED light flips from Red to Green.
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Prevent Deep Voltage Sag: Do not let your battery run completely down to 0% before plugging it in. Charging a completely dead pack can compromise internal cells.
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Deep Maintenance Cycling: For batteries undergoing shallow everyday runs, perform a deep discharge cycle once every 3 months to reset the internal cells.
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Disconnection Logic: Once charging is finalized, pull the AC wall cord first, then safely unplug the battery's DC connector lead.
📦 What's Inside the Box?
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1 x SMALL DEN 84V Smart Lithium-Ion Battery Charger Host (Speed Model Selected at Checkout)
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1 x Integrated Heavy-Gauge DC 5.5mm × 2.1mm Output Coaxial Cable
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1 x Integrated Global AC Input Power Cable (Matched to Checkout Country Plug Standard)
Stop choking your heavy 72V motorcycle with slow, underpowered charging bricks. Give your cells the clean, fan-cooled fast charge they deserve. Select your performance amperage variant below, click Add to Cart, and upgrade your garage grid today!
| Selectable Speed Model | Peak Power Consumption | Primary Battery Match Recommendation | Standard Output Plug |
| 84V 2A Standard | 180 Watts Max | 72V 10Ah – 15Ah Battery Packs | Coaxial DC 5.5mm × 2.1mm |
| 84V 3A Accelerated | 260 Watts Max | 72V 15Ah – 20Ah Battery Packs | Coaxial DC 5.5mm × 2.1mm |
| 84V 5A Rapid Charge | 450 Watts Max | 72V 20Ah – 30Ah Battery Packs | Coaxial DC 5.5mm × 2.1mm |
Double-sided cooling holes
Details
This product is crafted with quality materials to ensure durability and performance. Designed with your convenience in mind, it seamlessly fits into your everyday life.
Shipping & Returns
We strive to process and ship all orders in a timely manner, working diligently to ensure that your items are on their way to you as soon as possible.
We are committed to ensuring a positive shopping experience for all our customers. If for any reason you wish to return an item, we invite you to reach out to our team for assistance, and we will evaluate every return request with care and consideration.
