16.8V 8A Li-ion Battery Charger for 4S 14.8V Battery
The Phonix® FX1688000 is an industrial-grade, high-output 16.8V 8A Li-ion battery charger optimized for rapid heavy-duty replenishment of 4S 14.8V Lithium-ion and Li-Po battery packs. Delivering a powerful 134.4W continuous DC output, this fanless charger is integrated into an expanded heavy-duty casing engineered to optimize natural convection cooling for high-capacity drones, demanding power tools, and professional LED lighting systems. Regulated by a dedicated MCU system, it automatically controls the standard multi-stage charging path (Pre-charge, Constant Current, Constant Voltage, and Auto Cut-off) with hardware-level latch protections against over-voltage, over-current, short-circuits, and reverse polarity. Designed for zero-downtime fleet reliability with a 100,000-hour MTBF and a 3-year factory warranty, this flagship model carries full safety compliance (UL, CE, TUV, FCC, PSE, CCC) needed for international commercial procurement.
Description
134.4W Heavy-Duty Charging & Optimized Natural Convection
The Phonix® FX1688000 is built for heavy-use industrial environments that demand accelerated fast-charging turnaround times for high-capacity cell matrices. To safely manage the 134.4W continuous power delivery without relying on noisy or failure-prone cooling fans, the internal electronics are optimized within a reinforced flame-retardant housing ($178 \times 80 \times 46\text{ mm}$, weighing 800g). This robust configuration maximizes the total surface area for natural air cooling, keeping the external casing temperature rise under < 40°C during maximum Constant Current delivery. It provides a pure, ultra-low ripple DC output that prevents grid stress on multi-cell battery packs during high-rate energy transfers.
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 | Grid variance tolerance window | |
| Rating Input Current | 4.0 A / RMS | @ 100V Input, Full Load (With safety margin) | |
| Max Input Power | 152W | @ 100V Input, Full Load | |
| 2. Output Specs | No Load Output Voltage | DC 16.8 V | Precision voltage reference |
| Output Voltage Range | DC 14.8V ~ 16.8V | Dynamic curve regulation | |
| Charging Current | 8A ±10% | High-rate Constant Current (CC) stage | |
| Charging Voltage | DC 16.8 V ±0.2 V | Constant Voltage (CV) saturation window | |
| Pre-charge Current | 0.8A ± 0.1A | Triggers when battery voltage ≤ 12V | |
| Charge-end Current | ≤ 0.8A ±10% | Optimized cut-off current threshold for full cell saturation | |
| Suitable Battery Type | 4S Li-ion / Li-Po Battery Packs | Optimized for 14.8V nominal voltage configurations | |
| Timer Protection | — | Continuous state tracking | |
| Max Output Power | 134.4W | Continuous maximum power output | |
| Ripple Voltage | ≤ 168mV | Full load, Peak-to-Peak (Vp-p value) | |
| Efficiency | ≥ 89% | Full load @ 220V AC input | |
| 3. Protection & Indicators | Short-Circuit / Reversed Protection | Yes / Yes | Instant hardware cutoff with automatic recovery |
| Power LED State | Red | AC input source active | |
| Charging LED (No Battery) | All Off | Standby open-circuit state | |
| Charging LED (Active Charge) | Flashing One by One | Multi-stage charging in progress (Capacity feedback) | |
| Charging LED (Finished) | All On / Green On | Pack fully saturated; automatic cutoff active | |
| Charging LED (Error State) | All Flashing | Fault latch active (Short circuit, Reverse, Over-temp) | |
| 4. Environmental | Operating Temperature | -10°C ~ +40°C | Continuous operation at stable full load |
| Storage Temperature | -40°C ~ +70°C | Suitable for multi-zone shipping transit stress | |
| Operating / Storage Humidity | < 90% RH / 0 ~ 95% RH | Non-condensing moisture thresholds | |
| Cooling Mechanics | Natural Convection | Silent fanless heat dissipation | |
| Vibration Resistance | 5MM / 50HZ / 600S | Non-operating multi-axis vibration verification | |
| Impact Resistance | 1-meter drop test, 3 times | Casing structural integrity certified | |
| 5. Mechanical | Weight | 800g | Net weight of heavy-duty casing version |
| Dimensions | 178 * 80 * 46 mm | High-impact flame-retardant shell layout | |
| Output Connector | Refer to Order Guide | Highly customizable termination geometries | |
| 6. Safety & Reliability | Max Temperature Rise | < 40°C on casing | Measured at maximum stable power envelope |
| Safety Approvals | CE, TUV, FCC, PSE, CCC | Certified for direct global market shipping | |
| MTBF | 100,000 Hours | Calculated via continuous stress profiles | |
| ESD Immunity | 8.0 KV | Electrostatic isolation safety threshold | |
| Hi-Pot Insulation | i/p to o/p: 3000V (1 min) | Primary to secondary electrical testing |
Sequential LED Level Monitoring & Engineering Customization
The integrated multi-LED flashing sequence delivers granular real-time feedback during heavy-amp charging cycles, maintaining field clarity for workshop operators. If your target battery hardware comprises medium-scale cells that operate more efficiently at slightly lower charging current thresholds, you can check our robust 16.8V 6A Li-ion battery charger specification sheets. Phonix® provides extensive factory OEM/ODM architecture support, allowing engineering departments to request specific regional AC power lines (US, EU, UK, AU, JP) and spec specific high-amp DC terminations including XLR, GX16 Aviation blocks, Anderson powerpoles, or heavy-duty XT60 and XT90 connectors fully aligned with global PSE safety benchmarks.
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