4.2V 5A Li-ion Battery Charger for 1S 3.7V Battery
Features:
- Fast and efficient charging: 5A big current;
- Full safety protections: Over temperature, over hot, over voltage, over current;
- Global certifications: UL, CE, FCC, ETL, PSE, SAA, C-TICK, RCM;
- Plugs: Multiple international plug options;
- Warranty: By a 5-year warranty;
- OEM/ODM customization: Available;
- Adapt for: the Li-ion battery, Lipo battery, Portable electronics, toys battery, and LED lighting,etc.
Description
Adapt for: 1S 3.7V Li-ion Battery
Model:FX0425000
AC Input: 100~240V
DC Output: 4.2V 5A
Application: 1S 3.7V Li-ion Battery
Charge Process: Pre-charge, CC, CV and Automatically Cut-off
Charger Indicator: With Double color LED for power capacity show
Output Protections: OVP, OCP, Shorted,
Reversed Safety Approval: CE, UL, TUV, FCC, PSE, CCC
Size: 127 x 67 x 38mm
Net Weight: 270g
Industry: Security System, Lighting Industry
Brand: Phonix®
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FX0425000 4.2V 5A Charger for 1S Li-ion Battery |
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| Item | Specification | Remark |
| 1.Input | ||
| Rating input voltage | 100~240Vac 50/60Hz | |
| Input voltage range | 90~264Vac | |
| Rating input current | 1.0Arms | Input:100V Output: Full load |
| Max input power | 25W | Input:100V Output: Full load |
| 2.Output | ||
| No load output voltage | DC 4.4V | |
| Output voltage range | DC 3.7V~4.2V | |
| Suit with battery type | 1S Li-ion battery | |
| Charging current | 5A ±10% | |
| Charging voltage | DC4.2V ±0.2V | |
| Pre-charge | 0.5A±0.1A | Voltage ≤2.8V Pre-charging |
| Charge-end current | ≤1A±10% | |
| Timer | – | |
| Max output power | 21W | |
| Ripple voltage | ≤42mV | Full load |
| Power LED | Red | Power on |
| Charging LED | All off | No battery |
| All on | Finished | |
| All flashing | Error | |
| Flashing one by one | Charging | |
| Shorted | Yes | |
| Reversed | Yes | |
| Efficiency | ≥88% | Full load @220V |
| 3.Environment | ||
| Operate temperature | -10 ~ +40℃ | |
| Operate humidity | < +90% | Relative humidity |
| Storage temperature | -40 ~ +70℃ | |
| Storage humidity | 0 ~ +95% | Relative humidity |
| Cooling | Natural | |
| Vibration resistance | 5MM/50HZ/600S | Non-operating condition |
| Impact resistance | 1 meter drop test 3 times | Non-operating condition |
| 4.Mechanical | ||
| Weight | 270g | |
| Size | 120X67X38MM | Casing only |
| Connector | Refer to order | |
| 5.Safety | ||
| Max. temperature rise | < 40℃ on casing | |
| Safety approval | CE/TUV/FCC/PSE/CCC | |
| MTBF | 50000H | |
| ESD | 8.0KV | |
| Hi-Pot Insulation | i/p to o/p: 3000V (1 min) | |
Frequently Asked Questions (FAQ)
Q1: Can I use this 4.2V 5A charger for multiple Li-ion cells connected in parallel?
A: Yes. This charger is specifically designed for 1S (1-Cell) 3.7V/3.6V Li-ion battery packs. It can charge multiple cells connected in parallel (1SnP), provided that the total capacity of the pack matches a 5A charging current (ideally recommended for battery packs above 10Ah to ensure a safe charging rate).
Q2: What do the different LED indicator statuses mean on the FX0425000 charger?
A: The charger features an intelligent double-color LED display:
• Flashing One by One: The battery is currently charging.
• All LEDs ON: Charging is finished/fully charged.
• All LEDs OFF: No battery connected.
• All LEDs Flashing: Error detected (e.g., triggered short-circuit or reverse polarity protection).
Q3: How does the 4-stage charging process protect my 1S Li-ion battery?
A: Phonix® FX0425000 utilizes a smart 4-stage charging algorithm to maximize battery lifespan:
• Pre-charge: Safely revives deeply discharged batteries with a low 0.5A current when the voltage is below 2.8V.
• Constant Current (CC): Delivers a fast and stable 5A charge until the battery reaches 4.2V.
• Constant Voltage (CV): Tapers the current down while maintaining 4.2V to ensure a 100% full charge.
• Automatic Cut-off: Stops charging completely once the charge-end current drops below 1A, preventing overcharging.
Q4: Is this 4.2V 5A Li-ion charger certified for international markets?
A: Absolutely. To comply with global safety standards, the FX0425000 holds comprehensive global certifications, including CE, UL, TUV, FCC, PSE, and CCC. It also features robust built-in protections against Over-Voltage (OVP), Over-Current (OCP), Short-Circuits, and Reverse Polarity.
Technical Application & B2B Procurement Guide
Ideal Applications:
Given its high-current 5A output and industrial-grade safety certifications, this 1S Li-ion charger is widely used in:
- Security Systems: Backup power supplies, CCTV cameras, and wireless alarm systems.
- Lighting Industry: High-power LED searchlights, emergency lighting systems, and portable industrial lamps.
Why Choose Phonix® FX0425000?
As an OEM/ODM-capable manufacturer, Phonix® ensures every industrial battery charger undergoes a 1-meter drop test and 3000V Hi-Pot insulation testing. We offer customizable output connectors to seamless fit your target devices. Contact our engineering team for bulk pricing and custom specifications.
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