21V 3A Li-ion Battery Charger for 5S 18.5V / 5-Cell Battery Packs

Designed for 5S 18.5V lithium-ion battery packs
Intelligent charging with multi-stage process: Pre-charge, Constant Current (CC), Constant Voltage (CV), and Auto Cut-off
Dual-color LED indicators showing charging status
Comprehensive protections: Over-voltage (OVP), Over-current (OCP), Short-circuit (SCP), Reverse polarity
Compact, durable housing with efficient heat dissipation
Certified by CE, FCC, RoHS, UL for global market use
OEM/ODM customization services available
3-year warranty ensuring reliable long-term performance
Adapt for cordless power tools, LED lighting systems, RC vehicles and drones, portable electronics, and other battery-powered devices.

Description

Brand: Fangxin®

Model: FX2103000

AC Input: 100 ~240V

DC Output: 21V 3A

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: 133*58*31MM

Net Weight: 350g

Adaptor for: 5S 18.50V Li-ion Battery, Lipo battery, Lithium ion battery

Customized Charger: Acceptable

FX2103000 21V 3A Li-ion Battery Charger for 5S 18.5V / 5-Cell Battery 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	75W	Input:100V, Output: Full load
2.Output
No load output voltage	DC 21 V
Output voltage range	DC 18.50V ~ 21V
Charging current	3A ±10%
Charging voltage	DC 21V ±0.2 V
Pre-charge	0.3A ± 0.1A	Voltage≤15V
Charge-end current	≤0.6A±10%
Suit with battery type	5S Li-ion Battery
Timer	–
Max output power	63W
Ripple voltage	≤168mV	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	≥85%	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	350g
Size	1335831MM	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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