LiFePO4 battery

Ampxell LiFePO4 Battery

The LiFePO4 (Lithium Iron Phosphate) battery, also known as the LFP battery, is a type of rechargeable battery. It is regarded as the safest lithium battery currently available on the market. Designed to be compact, lightweight, and highly energy-dense, it delivers exceptional performance.

With a cycle life reaching thousands of cycles, AMPXELL's LiFePO4 batteries offer high-powered cell performance suitable for a wide range of lithium-ion applications. These batteries deliver more power and extended longevity compared to traditional alternatives.

Features of AMPXELL LiFePO4 Battery

Excellent High-Temperature Resistance: Operating temperature range of -20°C to 70°C.
No Memory Effect: Supports 150C pulse discharge, 90C discharge for 2 seconds, 45C continuous discharge, and 5C fast charge.
Higher Capacity: Offers greater capacity compared to similarly sized lead-acid batteries.
Extended Cycle Life: Surpasses other lithium-ion batteries with a life cycle exceeding 2,000 cycles.
Superior Safety and Eco-Friendliness: Ensures reliable and environmentally friendly use.
Perfect Drop-in Replacement: Easily replaces lead-acid batteries.
Multi-Series and Parallel Modules Support: Configurable up to 4S10P.
High-Speed Charge/Discharge: Supports up to 5C charging and discharging rates.
Intelligent BMS Integration: AMPXELL’s BMS provides high-power discharge with multiple protection and control features.
Modular Design: Allows easy installation and customization of battery size, casing, connectors, etc.

Performance of LiFePO4 Battery
Ampxell has the capability to independently research, develop, and mass-produce lithium iron phosphate batteries. Our products include a variety of series, ranging from 5C to 70C, to meet diverse market demands.

Application Field

5C Series: Ideal for electric motorcycles, electric bikes, scooters, balance cars, and other small-multiplier power supply applications.
35C, 45C, 70C Series: Designed for start-and-stop power supply applications.

Performance of 5C Series (Example: 8086185EF-12Ah)

2.1Battery Performance

No	FB8086185EF -12Ah
1	Basic performance	Specification	Thickness * Width * Length (mm)	8.286.0183.0
2		Specification	Weight (g)	259.6
3		Internal resistance to ACR (m Ω)		0.95
4		1C	capacity (mAh)	11891
5		1C	Midpoint voltage (V)	3.224
6	Electric performance	3C	Midpoint voltage (V)	3.122
7		3C	The 3C/1C capacity retention rate is (%)	95.1
8		5C	Midpoint voltage (V)	2.991
9		5C	The 5C/1C capacity retention rate is (%)	91.4
10		Normal temperature @1Year	The 0.5C capacity retention rate is (%)	90.12
11			0.5C capacity recovery rate (%)	94.03
12			Expansion rate (%)	2.59
13		65°C@7days	The 0.5C capacity retention rate is (%)	95.15
14			0.5C capacity recovery rate (%)	98.06
15			Expansion rate (%)	4.48
16		80°C@24hours	The 0.5C capacity retention rate is (%)	98.81
17			0.5C capacity recovery rate (%)	96.96
18			Expansion rate (%)	2.87

2.2 Charge and Discharge performance
Test Method: At a room temperature, charge at 0.5C constant current to 3.68V, with a cut-off current of 0.05C. Discharge at rates of 0.3C, 0.5C, and 1C to 2.5V.

2.3 Rate performance at room Temperature
Test Method: At room temperature, charging @0.5C constant current to 3.68V, with a cut-off current of 0.05C. Discharge at 1C, 2C, 3C, and 5C constant current to 2.5V.

No.	Discharge capacity / mAh	Capacity retention rate is vs.1C/%	Midpoint voltage / V
1C	11891	100.0	3.224
2C	11340	95.3	3.188
3C	11312	95.1	3.122
5C	10873	91.4	2.991

2.4.1 Room Temperature Storage (1 Year)
Test Method: Charge at 0.5C constant current to 3.68V, cut-off current 0.05C. Store at room temperature for 1 year, then discharge at 0.5C to 2.0V. Repeat the cycle 3 times and record internal resistance, thickness, and capacity before and after storage.

Normal temperature @1Y	Before constant temperature storage			After constant temperature storage				Calculate
	Core thickness / mm	Internal resistance, / m Ω	capacity /mAh	Core thickness / mm	Internal resistance, / m Ω	1st capacity / mAh	3rd capacity / mAh	Expansion rate /%	Internal resistance growth rate is /%	Capacity retention rate of%	Capacity recovery rate of%
	8.19	0.94	12358	8.40	0.99	11137	11620	2.59	5.75	90.12	94.03

2.4.2 High Temperature Storage @65°C for 7 Days
Test Method: After charging to 3.68V at 0.5C constant current, store the battery at 65°C ± 2°C for 7 days. Cool to room temperature, then discharge at 0.5C to 2.0V. Cycle 3 times and record resistance, thickness, and capacity before and after storage.

65°C @7days	Before high temperature storage			After high temperature storage				Calculate
	Thickness / mm	Internal resistance, / m Ω	Capacity /mAh	Thickness / mm	Internal resistance, / m Ω	1st capacity / mAh	3rd capacity / mAh	Expansion rate /%	Internal resistance growth rate is /%	Capacity retention rate of%	Capacity recovery rate of%
	8.15	0.92	12346	8.52	0.96	11747	12106	4.48	4.69	95.15	98.06

2.4.3 High Temperature Storage @80 °C for 24hour
Test method: Similar to the 65°C test, but stored at 80°C ± 2°C for 24 hours.
.

80°C @24h	Before high temperature storage			After high temperature storage				Calculate
	Thickness / mm	Internal resistance, / m Ω	Capacity /mAh	Thickness / mm	Internal resistance, / m Ω	1st capacity / mAh	3rd capacity / mAh	Expansion rate /%	Internal resistance growth rate is /%	Capacity retention rate of%	Capacity recovery rate of%
	8.17	0.97	12346	8.40	1.04	11971	12199	2.87	7.02	96.96	98.81

3.1 Battery performance (Example: 4544105HF-1.6Ah)

No	FB4544105HF -1.6Ah
1	Basic performance	Specification	Thickness * Width * Length (mm)	4.543.5106.0
2		Specification	Weight (g)	39.7
3		Internal resistance to ACR (m Ω)		3.0
4		1C	capacity (mAh)	1650.1
5		1C	Midpoint voltage (V)	3.216
6	Electric performance	30C	Midpoint voltage (V)	2.819
7		30C	The 30C/1C capacity retention rate is (%)	98.6
8		35C	Midpoint voltage (V)	2.796
9		35C	The 35C/1C capacity retention rate is (%)	97.2
10		40C	Midpoint voltage (V)	2.668
11		40C	The 40C/1C capacity retention rate is (%)	96.0
12		Low temperature discharge of vs room temperature	-20°C&25C （%）	91.6
13		Pulsed voltage @1s	120C（V ）	2.243
14			150C（V）	2.053
15			180C（V ）	1.884
16		Pulsed voltage @2s	130C（V ）	2.131
17			140C（V）	1.980
18			150C（V）	1.818
19		Normal temperature @1Y	The 0.5C capacity retention rate is (%)	89.97
20			0.5C capacity recovery rate (%)	92.01
21			Expansion rate (%)	2.63
22		65°C@7days	The 0.5C capacity retention rate is (%)	94.35
23			0.5C capacity recovery rate (%)	97.58
24			Expansion rate (%)	4.59
25		80°C@24hours	The 0.5C capacity retention rate is (%)	96.56
26			0.5C capacity recovery rate (%)	97.92
27			Expansion rate (%)	2.91

3.2 Charge and discharge performance

Test method: At constant temperature, the constant pressure of 0.5C to 3.68V, cut-off current of 0.05C; is discharged at 0.3C, 0.5C, 1C to 2.5V. respectively

No.	0.3C Discharge capacity / mAh	0.5C Charging capacity / mAh	0.5C discharge capacity / mAh	1C discharge capacity / mAh	Discharge capacity ratio of /%
					0.3C/1C	0.5C/1C
Test value	1664	1660	1659	1645	101.15	100.85

3.3 Rate performance at room temperature

Test method: At room temperature, CC@0.5C then CV to 3.68V, cut-off @0.05C; then discharged at 1C, 30C, 35C, 40C

Project	Discharge capacity / mAh	Capacity retention rate is vs.1C/%	Median voltage / V
1C	1645	100.0	3.216
30C	1623	98.6	2.819
35C	1600	97.2	2.796
40C	1580	96.0	2.688

3.4 Rate performance at low temperature

Test method: At room temperature, CC @ 0.5C,then CV to 3.68V, cut-off @ 0.05C; Store cells at -20 °C ± 2 °C for 4hours, then CC@ 25C to 1.5V.

Project	Normal temperature discharge capacity / mAh	-20 °C Discharge Capacity / mAh	-20 °C discharge voltage / V	-20 °C for discharge midpoint voltage / V	-20 °C / room temperature discharge capacity ratio /%
Test value	1645	1508	1.857	2.560	91.6

3.5.1 Pulse discharge performance for 1s

Test method: At room temperature, CC @ 0.5C and CV to 3.68V, at room temperature, cycle 10 times at 120C, 150C, 180C each time is 1s..

3.5.2 Pulse discharge performance for 2seconds

Test method: At room temperature, CC charge @ 0.5C, then CV 3.68V; at room temperature, discharge @ 130C, 140C, 150C for 2s till 130 times.

3.6.1 room temperature storage for 1 year

Test method: CC Charge @0.5C, then CV to 3.68V, cut-off @ 0.05C; then store the cells at room temperature for 1Year. Then 0.5C discharge to 2.0V; then 0.5C charge, cycle 3 times, record the internal resistance, thickness and capacity before and after the storage.

Normal temperature @1Year	Before storage at room temperature			After constant temperature storage				Calculate
	Thickness / mm	Internal resistance, / m Ω	Capacity /mAh	Thickness / mm	Internal resistance, / m Ω	1st capacity / mAh	3rd capacity / mAh	Expansion rate /%	Internal resistance growth rate is /%	Capacity retention rate of%	Capacity recovery rate of%
	4.41	2.89	1659	4.53	3.15	1476	1526	2.63	8.84	88.97	92.01

3.6.2 High Temperature storage @ 65 °C for 7days

Test method: After 0.5C CC & CV charging to 3.68V, cut-off @ 0.05C; then stored the cells in the 65°C±2°C for 7days, discharge 4-8h at room temperature @ 0.5C to 2.0V; then charge @0.5C, cycle 3 times to record the resistance, thickness and capacity before and after storage

65°C @7days	Before high temperature storage			After high temperature storage				Calculate
	Thickness / mm	Internal resistance, / m Ω	Capacity /mAh	Thickness / mm	Internal resistance, / m Ω	1st capacity / mAh	3rd capacity / mAh	Expansion rate /%	Internal resistance growth rate is /%	Capacity retention rate of%	Capacity recovery rate of%
	4.49	2.98	1649	4.70	3.12	1556	1609	4.59	4.74	94.35	97.58

3.6.3 High Temperature storage @80 °C for 24hours
Test method: After CC charging @0.5C, then CV to 3.68V, cut-off @ 0.05C; then store cells in the 80°C±2°C for 24hours, discharging 4-8h at room temperature @ 0.5C to 2.0V; CC charge@ 0.5C, cycling 3 times to record the internal resistance, thickness and capacity before and after core storage.

80°C @24h	Before high temperature storage			After high temperature storage				Calculate
	Thickness / mm	Internal resistance, / m Ω	Capacity /mAh	Thickness / mm	Internal resistance, / m Ω	1st capacity / mAh	3rd capacity / mAh	Expansion rate /%	Internal resistance growth rate is /%	Capacity retention rate of%	Capacity recovery rate of%
	4.47	2.91	1657	4.60	3.12	1600	1623	2.91	7.23	96.56	97.92

Why LiFePO4 Batteries are Ideal for Commercial Applications

The energy storage market has experienced rapid growth, and lithium-ion batteries have emerged as superior to other chemistries, including nickel-cadmium (NiCd) and lead-acid. Lithium iron phosphate (LiFePO4) batteries are particularly well-suited for industrial use due to their safety, environmental friendliness, and long lifespan.

Key Advantages of LiFePO4 Batteries:

Safety: Stable chemistry with no risk of thermal runaway, explosion, or fire under normal operating conditions.
Environmental Friendliness: Free of hazardous materials like cadmium and lead, making them non-toxic and recyclable.
High Energy Density: Lightweight with double the usable capacity compared to lead-acid batteries.
Long Cycle Life: Over 5,000 deep discharge cycles, compared to 300–800 cycles for lead-acid batteries.
Flat Voltage Curve: Consistent power delivery until fully discharged.
High Discharge Rate: Supports 10C continuous and 20C pulse discharge rates.

Faster Charging: Capable of charging at rates up to 3C, significantly reducing recharge time.

Why Choose Us?
Ampxell was founded in 2005 as a cutting-edge technology company specializing in the research, development, and production of LiPo batteries, LiFePO4 batteries, and power management systems. With decades of growth, Ampxell has become one of the leading manufacturers of high C-rate and high-capacity batteries. Our proprietary brand, Ampxell, is recognized both domestically and internationally.

With extensive expertise in battery technology, Ampxell has developed a wide range of products that are widely used and highly regarded in various fields, including unmanned aerial systems, R/C hobbies, consumer electronics, medical instruments, portable power systems, electronic devices, and military applications. Backed by our independent battery and electronics R&D team, we provide top-tier OEM/ODM services to our customers and have earned certifications as a trusted supplier from many well-known domestic and international companies.

To date, our sales network covers all regions of China and extends to most parts of Asia, Europe, the Americas, Australia, and certain regions of Africa. We are actively seeking global distributors to further enhance our ability to deliver efficient distribution and exceptional after-sales service to our customers.

LiFePO4 battery

LiFePO4 battery

Send message to us