Electric Vehicles Products
Leonics NK ER 4810 / NK ER 4812
High-Current Charging for 48V Battery Banks
Engineered for higher-capacity 48V battery banks, these models are well-suited for off-grid solar systems, backup power solutions, and commercial electric fleets requiring faster charging times.
Key Specifications
Operating Input Voltage: 230 Vac (Range: 170–300 Vac)
Max Input Current: 6 A (NK ER 4810) / 7 A (NK ER 4812)
Frequency: 50 Hz (47–63 Hz)
Inrush Current: < 30 A
Charging Voltage: ~63 V* (44–63 V range)
Charging Current: 10 A (NK ER 4810) / 12 A (NK ER 4812)
Ripple & Noise: Max 750 mV
Output Power: 630 W / 750 W
Stage 1 (Boost): Constant current
Stage 2 (Absorption): Constant voltage
Stage 3 (Float): Maintain full charge
Stage 4 (Re-Charge): Occasional trickle to keep battery healthy
Multi-level LED indications: 50%, 80%, 100% charging status
Input Over-/Under-Voltage: 300 Vac ±15 Vac / 170 Vac ±15 Vac
Output Over-Voltage: 67 V (factory adjustable)
Output Overload: 11 A / 13 A (fold-back or shutdown)
Short-Circuit & Battery Reverse Protection
Operating Temperature: 0–50 °C
Efficiency: ~85% at 100% load
Fan-cooling; Non-condensing humidity
General Product Advantages
Multi-Stage Charging: Boost, Absorption, Float, and (in some models) Re-Charge stages prevent battery damage, enhance performance, and prolong battery life.
Robust Protection: Comprehensive safety features safeguard against over-voltage, under-voltage, overload, short-circuit, and reverse polarity.
High Efficiency: Up to 80–85% efficiency at full load, reducing power losses.
User-Friendly LED Indicators: Real-time feedback on charging progress and fault conditions.
Wide Input Voltage Range: Supports stable operation even in areas with fluctuating grid supply.
Rugged Design: Durable enclosures and fan-cooling support usage in demanding industrial or outdoor environments.