21V 1A Li-ion Battery Charger for 5S Battery
To prevent operational disruptions in small-scale utility systems and portable industrial devices, the Phonix® FX2101000 provides a stable 21W regulated DC output as a highly reliable 21V 1A Li-ion battery charger. Specifically calibrated to extend the service life of 5S 18.5V Lithium-ion and Li-Po battery configurations, this fanless platform manages localized temperature fields through high-efficiency internal energy conversion, effectively eliminating micro-short risks during low-current saturation stages. The compact, fully enclosed convection housing isolates internal multi-layer PCB components from abrasive dust, fine humidity particles, and warehouse debris within a space-saving 70X45X38 mm footprint. Delivering an optimized full-load energy efficiency of ≥ 88.5% to minimize thermal radiation, this wall-plug infrastructure platform relies on an integrated microcontroller safety core to execute immediate hardware cutoffs during critical grid variances, protecting equipment from over-voltage, over-current, short circuits, and line cross-connections. Engineered for zero-maintenance enterprise operations with a certified 100,000-hour MTBF and an extensive 5-year factory warranty, this 1A system satisfies strict institutional technical criteria for rapid procurement and trouble-free global RFP approval (UL, CE, TUV, FCC, PSE, CCC).
Description
Precision Low-Current Fleet Maintenance via Fanless Convection Casing
Sustaining an optimized 21W electrical envelope without mechanical active cooling components requires specialized circuit board spacing to eliminate localized thermal build-up. The Phonix® FX2101000 utilizes an enclosed, flame-retardant industrial shell layout measuring 70X45X38 mm (weighing 150g) optimized for natural air convection. For localized cordless tool stations, emergency remote lighting grids, and mobile instrumentation setups, eliminating internal fans guarantees complete immunity against airborne carbon dust, conductive soot, or humidity spikes that routinely disable generic chargers. This low-power high-density layout limits casing temperature rise to < 40°C during extended constant-current bulk charging, safeguarding delicate 5S internal cell balancing structures and avoiding localized thermal stress profiles.
Technical Parameters
| Category | Technical Parameter | Engineering Specification | Remarks / Test Conditions |
|---|---|---|---|
| 1. Input Specs | Rating Input Voltage | 100 ~ 240 Vac | 50/60 Hz Universal Grid Input |
| Input Voltage Range | 90 ~ 264 Vac | Grid variance tolerance threshold | |
| Rating Input Current | 4.5 A / RMS | @ 100V Input, Full Load (With safety internal fuse margin) | |
| Max Input Power | 24.7W | @ 100V Input, Full Load | |
| 2. Output Specs | No Load Output Voltage | DC 21.0 V | Precision voltage reference |
| Output Voltage Range | DC 18.50V ~ 21.0V | Dynamic curve voltage tracking | |
| Charging Current | 1A ±10% | Constant Current (CC) stabilization stage | |
| Charging Voltage | DC 21.0 V ±0.2 V | Constant Voltage (CV) saturation window | |
| Pre-charge Current | 0.1A ± 0.02A | Triggers when cell voltage ≤ 15V (Deep discharge recovery) | |
| Charge-end Current | ≤ 0.1A ±10% | Calibrated 10% cut-off current for full cell saturation | |
| Suitable Battery Type | 5S Li-ion / Li-Po Battery Packs | Optimized for 18.5V nominal voltage architectures | |
| Timer Protection | — | Continuous dynamic cycle tracking | |
| Max Output Power | 21W | Continuous max power rating | |
| Ripple Voltage | ≤ 168mV | Full load, Peak-to-Peak (Vp-p threshold) | |
| Efficiency | ≥ 88.5% | Full load @ 220V AC input | |
| 3. Protection & Indicators | Short-Circuit / Reversed Protection | Yes / Yes | Instant hardware cutoff with automatic recovery functionality |
| Power LED State | Red | AC power grid source active | |
| Charging LED (No Battery) | All Off | Standby open-circuit verification | |
| Charging LED (Active Charge) | Flashing One by One | Multi-stage battery capacity feedback charging in progress | |
| Charging LED (Finished) | All On / Green On | Pack fully saturated; automatic output cut-off isolated | |
| Charging LED (Error State) | All Flashing | Fault latch triggered (Over-voltage, short circuit, polarity flip) | |
| 4. Environmental | Operating Temperature | -10°C ~ +40°C | Continuous safe operation at 100% rated capacity |
| Storage Temperature | -40°C ~ +70°C | Suitable for multi-zone global cargo transit loads | |
| Operating / Storage Humidity | < 90% RH / 0 ~ 95% RH | Non-condensing atmospheric margins | |
| Cooling Mechanics | Natural Convection | Solid-state silent fanless architecture | |
| Vibration Resistance | 5MM / 50HZ / 600S | Non-operating multi-axis stress mapping compliant | |
| Impact Resistance | 1-meter drop test, 3 times | Casing structural impact retention verified | |
| 5. Mechanical | Weight | 150g | Net mass of lightweight localized wall housing |
| Dimensions | 70 * 45 * 38 mm | Compact layout envelope parameters | |
| Output Connector | Refer to Order Guide | Highly customizable geometric termination library | |
| 6. Safety & Reliability | Max Temperature Rise | < 40°C on casing | Verified under complete maximum stable thermal execution |
| Safety Approvals | CE, TUV, FCC, PSE, CCC | Certified for direct frictionless global market shipping | |
| MTBF | 100,000 Hours | Calculated continuous lifecycle reliability tracking | |
| ESD Immunity | 8.0 KV | Electrostatic isolation separation safety limit | |
| Hi-Pot Insulation | i/p to o/p: 3000V (1 min) | Primary to secondary electrical testing verification |
B2B Infrastructure Selection & Precision Integration Framework
The clear dual-color visual dashboard delivers instant electrical state recognition for facility engineers monitoring localized hardware cell arrays. For dynamic production lines incorporating larger multi-cell configurations where an increased current profile is mandatory to match aggressive turnaround windows, sourcing managers can reference our advanced 16.8V 8A Li-ion battery charger specification matrix. Phonix® fully supports deep factory engineering customization, allowing industrial buyers to order regional wall inputs alongside highly specialized DC terminations, including barrel plugs, standard coaxial nodes, heavy-duty Anderson blocks, or GX16 Aviation points conforming perfectly to international UL safety standards.
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