21V 5A Li-ion Battery Charger for 5S 18.5V Battery
To secure optimal uptime and eliminate charge-station bottlenecks within automated assembly grids, distributed mobile logistics, and heavy-duty portable test arrays, the Phonix® FX2105000 coordinates a continuous 105W power envelope as a high-efficiency 21V 5A Li-ion battery charger. Purpose-built to stabilize electrochemical cell migration and balance structural voltage profiles across 5S 18.5V Lithium-ion and Li-Po battery architectures, this heavy-duty convection-cooled platform bypasses thermal degradation via an advanced synchronous rectification topology. The fanless, ruggedized enclosure completely locks out airborne ferrous dust, conductive carbon fibers, and ambient workshop moisture, maintaining complete structural isolation within a robust 154X60X36 mm footprint. Delivering an elevated full-load conversion efficiency of ≥ 91.0% to attenuate operational thermal dissipation, the charging system features a centralized microcontroller tracking matrix that initiates hardware-level latching protections against over-voltage, output short-circuits, and phase cross-connections. Validated for continuous deployment with a 100,000-hour MTBF and an authoritative 5-year factory warranty, this 5A fast-charging solution effortlessly fulfills enterprise procurement compliance criteria and rigid international technical bid benchmarks (UL, CE, TUV, FCC, PSE, CCC).
Description
High-Efficiency Synchronous Rectification via Passive Thermal Isolation
Sustaining a 105W continuous energy delivery matrix inside high-utilization factory environments without mechanical airflow dependencies mandates an advanced electrical conversion efficiency to restrict internal thermal loading. The Phonix® FX2102000 utilizes an optimized LLC resonant converter paired with synchronous rectification secondary topologies, embedded within a fire-retardant solid enclosure measuring 154X60X36 mm (weighing 380g). For intensive industrial automation setups, warehouse mobile robotics, and automated guided vehicles (AGVs), the total exclusion of open-air mechanical fans eliminates structural vulnerabilities to conductive carbon soot, fine metallic dust, and moisture tracking. This highly reliable architecture maintains total case temperature elevation under < 40°C during maximum constant-current bulk charge phases, shielding sensitive internal multi-layer PCB pathways and preventing long-term component value drift.
Technical Parameters
| Category | Technical Parameter | Engineering Specification | Remarks / Test Conditions |
|---|---|---|---|
| 1. Input Specs | Rating Input Voltage | 100 ~ 240 Vac | 50/60 Hz Universal Utility Grid Compliance |
| Input Voltage Range | 90 ~ 264 Vac | Maintains full-load output through severe line sags | |
| Rating Input Current | 1.18 A / RMS | @ 100V AC Input, Full Load (Calibrated with Active PFC, PF ≥ 0.98) | |
| Max Input Power | 115.4W | Calculated closed-loop baseline: Pout (105W) ÷ Efficiency (91.0%) | |
| 2. Output Specs | No Load Output Voltage | DC 21.0 V | Precision voltage reference window; eliminates overcharging risks |
| Output Voltage Range | DC 18.50V ~ 21.0V | Dynamic closed-loop saturation curve tracking | |
| Charging Current | 5A ±10% | High-rate Constant Current (CC) fast-charge injection phase | |
| Charging Voltage | DC 21.0 V ±0.2 V | Constant Voltage (CV) saturation curve management | |
| Pre-charge Current | 0.5A ± 0.1A | Triggers automatically when cell voltage drops ≤ 15V | |
| Charge-end Current | ≤ 0.5A ±10% | Strict 10% cutoff threshold to combat electrochemical polarization | |
| Suitable Battery Type | 5S Li-ion / Li-Po Battery Networks | Calibrated parameter matching for 18.5V nominal cell arrays | |
| Timer Protection | — | Autonomous internal hardware phase runtime monitoring | |
| Max Output Power | 105W | Continuous continuous output power envelope (21V X 5A) | |
| Ripple Voltage | ≤ 168mV | Full load, Peak-to-Peak (Vp-p high-frequency filter margin) | |
| Efficiency | ≥ 91.0% | Full load @ 220V AC with full Synchronous Rectification | |
| 3. Protection & Indicators | Short-Circuit / Reversed Protection | Yes / Yes | Instant microsecond solid-state isolation cutoff and latching lockout |
| Power LED State | Red | Primary AC mainline input verified active | |
| Charging LED (No Battery) | All Off | Open-circuit standby verification loop status | |
| Charging LED (Active Charge) | Flashing One by One | Active sequential capacity tracking display | |
| Charging LED (Finished) | All On / Green On | 100% saturation reached; automated standby safety lock engaged | |
| Charging LED (Error State) | All Flashing | Fault status latch active (Over-temperature, line short, reverse connections) | |
| 4. Environmental | Operating Temperature | -10°C ~ +40°C | Sustained operation under full thermal stability saturation points |
| Storage Temperature | -40°C ~ +70°C | Protects component structural integration across long-range shipping transit | |
| Operating / Storage Humidity | < 90% RH / 0 ~ 95% RH | Non-condensing atmospheric evaluation limits | |
| Cooling Mechanics | Natural Convection | Zero mechanical noise; zero moving part wear vectors | |
| Vibration Resistance | 5MM / 50HZ / 600S | Meets non-operating equipment transit shock thresholds | |
| Impact Resistance | 1-meter drop test, 3 times | Chassis structural impact retention verified | |
| 5. Mechanical | Net Weight | 380g | Total mass of reinforced infrastructure assembly |
| Dimensions | 154 * 60 * 36 mm | Compact multi-layer mechanical space-saving layout | |
| Output Connector | Refer to Order Guide | Custom terminal options tailored to specific enterprise hardware systems | |
| 6. Safety & Reliability | Max Temperature Rise | < 40°C on casing | Tested under maximum continuous load saturation metrics |
| Safety Approvals | CE, TUV, FCC, PSE, CCC | Direct global shipping compliance authentication | |
| MTBF | 100,000 Hours | Calculated component lifecycle stress profiles | |
| ESD Immunity | 8.0 KV | Electrostatic arc safety separation line | |
| Hi-Pot Insulation | i/p to o/p: 3000V (1 min) | Galvanic primary to secondary safety barrier isolation |
Enterprise Power Scaling & Centralized Charging Grid Management
The integrated sequential LED capacity layout offers real-time status visibility for maintenance crews monitoring crowded battery charging racks on active warehouse floors. For automated line segments where lower current delivery profiles are required to maintain a balanced branch distribution network, operations managers can review our lower-power 21V 4A Li-ion battery charger parameter data. Phonix® fully supports deep OEM/ODM adaptations, allowing purchasing agents to integrate high-durability output termination hardware such as custom coaxial pins, insulated heavy clamps, multi-point aviation couplers, or quick-disconnect Anderson components certified to meet international TUV electrical safety regulations.
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