21V 2A Li-ion Battery Charger for 5S 18.5V Batttery
To reduce operational downtime in specialized field equipment and heavy-duty portable instruments, the Phonix® FX2102000 provides a stable 42W continuous power supply as a precision-engineered 21V 2A Li-ion battery charger. Calibrated to preserve cell capacity and balance structural voltage profiles across 5S 18.5V Lithium-ion and Li-Po battery configurations, this fanless desktop system optimizes internal energy paths to mitigate low-current thermal degradation. The fully sealed convection-cooled chassis completely locks out micro-particulate factory dust, warehouse humidity, and environmental contaminants within a compact 113X44X30 mm mechanical layout. Delivering a verified full-load energy efficiency of ≥ 88.5% to restrict structural heat generation, the infrastructure platform operates via an integrated safety microcontroller that triggers microsecond hardware-level latching cutoffs during line variances, isolating connected equipment from over-voltage, output shorts, and accidental reverse-polarity cross-connections. Engineered for zero-maintenance enterprise infrastructure integration backed by a certified 100,000-hour MTBF and an extensive 5-year factory warranty, this 2A system complies with strict commercial procurement directives for global RFP clearance (UL, CE, TUV, FCC, PSE, CCC).
Description
Localized Asset Protection via Passive Thermal Field Isolation
Deploying reliable power infrastructure inside high-utilization warehouse environments, distributed electrical cabinets, or mobile support technician kits requires high power density without mechanical failure vectors. The Phonix® FX2102000 utilizes a dense, fire-retardant enclosed polymer housing measuring 113X44X30 mm (weighing 190g) engineered exclusively for natural ambient convection cooling. By removing the open-frame cooling fans common in standard consumer platforms, this commercial-grade architecture eliminates the risk of systemic sub-assembly breakdowns caused by localized metallic dust build-up, fine airborne fibers, and moisture bridging. The optimized multi-layer internal PCB alignment prevents localized thermal pockets, keeping total outer shell temperature rise under < 40°C during maximum constant-current delivery phases to maximize inner component longevity and ensure safe continuous deployment.
Technical Parameters
| Category | Technical Parameter | Engineering Specification | Remarks / Test Conditions |
|---|---|---|---|
| 1. Input Specs | Rating Input Voltage | 100 ~ 240 Vac | 50/60 Hz Global Main Grid Compatibility |
| Input Voltage Range | 90 ~ 264 Vac | Operational continuity through localized grid brownouts | |
| Rating Input Current | 0.73 A / RMS | @ 100V AC Input, Full Load (Calculated baseline at low-power range) | |
| Max Input Power | 47.5W | Calculated electrical baseline: Pout (42W) ÷ Efficiency (88.5%) | |
| 2. Output Specs | No Load Output Voltage | DC 21.0 V | Audited precision reference window; eliminates overcharging risks |
| Output Voltage Range | DC 18.50V ~ 21.0V | Continuous closed-loop saturation tracking curve | |
| Charging Current | 2A ±10% | Controlled Constant Current (CC) injection phase | |
| Charging Voltage | DC 21.0 V ±0.2 V | Constant Voltage (CV) multi-stage saturation control | |
| Pre-charge Current | 0.2A ± 0.1A | Automatic low-current recovery mode when cell voltage ≤ 15V | |
| Charge-end Current | ≤ 0.2A ±10% | Strict 10% cutoff threshold to combat electrochemical polarization | |
| Suitable Battery Type | 5S Li-ion / Li-Po Battery Packs | Locked parameter matching for 18.5V nominal cell grids | |
| Timer Protection | — | Autonomous internal hardware phase runtime limiter | |
| Max Output Power | 42W | Continuous continuous output power limit (21V X 2A) | |
| Ripple Voltage | ≤ 168mV | Full load, Peak-to-Peak (Vp-p high-frequency filter margin) | |
| Efficiency | ≥ 88.5% | Full load @ 220V AC (Optimized low-power segment baseline) | |
| 3. Protection & Indicators | Short-Circuit / Reversed Protection | Yes / Yes | Instant microsecond solid-state isolation cutoff and lockout |
| Power LED State | Red | Primary AC source input validation active | |
| Charging LED (No Battery) | All Off | Standby open-circuit loop status | |
| Charging LED (Active Charge) | Flashing One by One | Active sequential capacity charging cycle indication | |
| Charging LED (Finished) | All On / Green On | 100% saturation reached; automatic safety standby active | |
| Charging LED (Error State) | All Flashing | Fault loop latch active (Over-temperature, line short, reversed) | |
| 4. Environmental | Operating Temperature | -10°C ~ +40°C | Sustained performance profiles under localized plant floors |
| Storage Temperature | -40°C ~ +70°C | Maintains structural component stability during transit cross-shipping | |
| 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 | 190g | Ultralight specialized infrastructure footprint mass |
| Dimensions | 113 * 44 * 30 mm | Compact multi-layer mechanical space-saving layout | |
| Output Connector | Refer to Order Guide | Custom terminal options customized to specific enterprise 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 |
Industrial Infrastructure Integration & Customized Power Engineering
The integrated dual-color LED signaling arrays allow field operators to track battery capacities instantly across crowded staging shelves without relying on secondary telemetry lines. For facility managers upgrading to higher power settings to support intensive material-handling vehicle applications, reviewing our fast-charging 21V 20A Li-ion battery charger parameters can help optimize station layouts. Phonix® maintains wide-ranging OEM/ODM adjustment capabilities, allowing corporate procurement teams to select specialized output terminations including standard barrel jacks, insulated alligator clips, custom 3-pin XLR heads, or polarized Anderson connectors configured according to strict international UL safety engineering directives.
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