18.25V 20A LiFePO₄ Battery Charger for 5S 16V LFP Packs

Heavy-duty 18.25V 20A LiFePO₄ charger designed for 5S 16V LFP batteries. Provides fast, reliable, and safe charging with intelligent control and multiple protections, ideal for high-capacity energy storage and mobility systems.


Features

  • Designed for 5S 16V LiFePO₄ (LFP) battery packs

  • Intelligent 3-stage charging: Constant Current (CC), Constant Voltage (CV), Float

  • High charging current (20A) for large-capacity battery packs

  • LED indicators for charging and full-charge status

  • Multiple protections: over-voltage, over-current, short-circuit, reverse polarity

  • Rugged design with efficient cooling for continuous operation

  • Global certifications: CE, UL, FCC, RoHS

  • Backed by 3-year warranty for long-term reliability

  • OEM/ODM customization for voltage, current, and connectors

  • Widely used in solar energy storage, backup power, mobility scooters, RVs, marine, and UPS systems

Description

18.25V 20A LiFePO4 Battery Charger Specification

 

Brand: Fangxin®

Model: FX1822000LFP

AC Input: 100~240V

DC Output: 18.25V 20A

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: 233*108*64mm

Net Weight: 1900g

Adaptor for: 5S 16V LiFePO4 Battery

Customized Charger: Acceptable

 

          FX1822000LFP 18.25V 20A LiFePO₄ Battery Charger for 5S 16V LFP Packs

Item Specification Remark
1.Input
Rating input voltage 100~240 Vac, 50/60 Hz  
Input voltage range 90~264 Vac  
Rating input current 1.0 A/RMS Input:100V    Output: Full load
Max input power 409W Input:100V    Output: Full load
2.Output
No load output voltage DC 18.25V  
Output voltage range DC16V ~ 18.25V  
Charging current 20A ±10%  
Charging voltage DC 18.25V±0.2 V  
Pre-charge 2A ± 0.10A Voltage≤10V

(battery discharge voltage)

Charge-end current ≤4A±10%  
Suit with battery type 5S 16V LiFePO4 Battery  
Timer  
Max output power 364W  
Ripple voltage ≤190mV Full load
Power LED Red Power on
Charging LED All off No battery
All on (or Green on) Finished
All flashing Error
Flashing one by one Charging
Shorted Yes  
Reversed Yes  
Efficiency ≥89% 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
Net Weight 1900g  
Size 233*108*64mm Casing only
Connector Refer to order  
     
5.Safety
Max. temperature rise < 40℃ on casing  
Safety approval CE/TUV/FCC/PSE/CCC  
MTBF 30000 H  
ESD 8.0 KV  
Hi-Pot Insulation i/p to o/p: 3000V (1 min)  

 

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