16.8V 4A Li-ion Battery Charger for 4S 14.8V Battery
The Phonix® FX1684000 is an industrial-grade 16.8V 4A Li-ion battery charger specifically engineered to deliver accelerated smart-charging to heavy-duty 4S 14.8V Lithium-ion and Li-Po battery configurations. Weaponized with a substantial 67.2W continuous output (76W peak input grid tolerance), this adapter is housed in an expanded high-thermal efficiency casing optimized for pro-level power tools, industrial LED systems, and continuous-run RC ground/aerial models. Monitored by a high-precision MCU core, it regulates an adaptive multi-stage safe sequence (Pre-charge/CC/CV/Auto Cut-off) with rigid hardware latch-offs for OVP, OCP, and short-circuit faults. Built for massive duty cycles with an extensive 30,000 Hours MTBF and 3-year factory warranty, this premium platform complies with global safety frameworks (UL, CE, TUV, FCC, PSE, CCC) to meet the zero-downtime mandates of enterprise procurement teams globally.
Description
Heavy-Duty 67.2W Charger Design & Natural Cooling
The Phonix® FX1684000 is built for heavy-use applications requiring faster charging turnarounds. Utilizing a larger casing size (133 X 58 X 31 mm ) to increase the surface area for natural heat dissipation, this fanless charger operates completely silently while keeping the surface temperature rise below < 40°C during full-load output. It provides a stable and clean DC current to protect multi-cell battery packs from premature degradation during fast-charging cycles, meeting the rigorous testing criteria defined under official IEC standards for industrial power supplies.
Technical Parameters
| Category | Technical Parameter | Engineering Specification | Remarks / Test Conditions |
|---|---|---|---|
| 1. Input Specs | Rating Input Voltage | 100 ~ 240 Vac | 50/60 Hz Universal Input |
| Input Voltage Range | 90 ~ 264 Vac | Voltage tolerance window | |
| Rating Input Current | 2.0 A / RMS | @ 100V Input, Full Load (With safety margin) | |
| Max Input Power | 75W | @ 100V Input, Full Load | |
| 2. Output Specs | No Load Output Voltage | DC 16.8 V | Fixed reference voltage |
| Output Voltage Range | DC 14.8V ~ 16.8V | Automatic multi-stage adjustment | |
| Charging Current | 4A ±10% | Constant Current (CC) stage | |
| Charging Voltage | DC 16.8 V ±0.2 V | Constant Voltage (CV) stage | |
| Pre-charge Current | 0.4A ± 0.1A | Triggers when battery voltage ≤ 12V | |
| Charge-end Current | ≤ 0.8A ±10% | Cut-off current threshold | |
| Suitable Battery Type | 4S Li-ion / Li-Po Battery Packs | Designed for 14.8V nominal voltage battery packs | |
| Timer Protection | — | Built-in safety monitoring | |
| Max Output Power | 67.2W | Continuous full load output | |
| Ripple Voltage | ≤ 168mV | Full load, Peak-to-Peak (Vp-p) | |
| Efficiency | ≥ 90% | Measured at 220V AC input, full load | |
| 3. Protection & Indicators | Short-Circuit / Reversed Protection | Yes / Yes | Auto-recovery after fault condition is removed |
| Power LED State | Red | Connected to AC power | |
| Charging LED (No Battery) | All Off | Standby mode | |
| Charging LED (Active Charge) | Flashing One by One | Charging in progress (Real-time capacity display) | |
| Charging LED (Finished) | All On / Green On | Battery fully charged; auto cut-off active | |
| Charging LED (Error State) | All Flashing | Fault triggered (Short circuit, Reverse, Over-temp) | |
| 4. Environmental | Operating Temperature | -10°C ~ +40°C | Continuous operation at full load |
| Storage Temperature | -40°C ~ +70°C | Safe for international transit and shipping | |
| Operating / Storage Humidity | < 90% RH / 0 ~ 95% RH | Non-condensing environment | |
| Cooling Mechanics | Natural Convection | Fanless, silent cooling design | |
| Vibration Resistance | 5MM / 50HZ / 600S | Non-operating multi-axis vibration test pass | |
| Impact Resistance | 1-meter drop test, 3 times | Casing structural integrity verified | |
| 5. Mechanical | Weight | 400g | Net weight excluding cords |
| Dimensions | 133 * 58 * 31 mm | Flame-retardant plastic shell | |
| Output Connector | Refer to Order Guide | Custom DC plugs available upon request | |
| 6. Safety & Reliability | Max Temperature Rise | < 40°C on casing | Measured at 25°C ambient room temperature |
| Safety Approvals | CE, TUV, FCC, PSE, CCC | Certified for major global markets | |
| MTBF | 100,000 Hours | Calculated under continuous operation | |
| ESD Immunity | 8.0 KV | Air discharge safety standard | |
| Hi-Pot Insulation | i/p to o/p: 3000V (1 min) | Primary to secondary isolation test |
Sequential LED Indicators & Custom DC Terminations
The FX1684000 uses a multi-LED indicator system that flashes sequentially during charging, allowing field operators to see the current battery capacity at a glance. For projects requiring even higher charging currents and faster turnover periods, procurement managers can evaluate our upgraded 16.8V 5A Li-ion battery charger configuration. All units support factory-level OEM/ODM modifications, including country-specific AC power cords (US, EU, UK, AU, JP) and ruggedized output interfaces such as XLR, GX16 Aviation plugs, Anderson connectors, or high-amp XT60 and XT90 links to match your specific hardware layout.
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