12.8V 3.5Ah LiFePO4 Battery Pack for Jump Starter & UPS Backup Power

Adopt high-stability LFP (Lithium Iron Phosphate) cell chemistry
2500+ charge-discharge cycles with capacity retention still ≥80%
Support stable discharge across a wide temperature range of -10~60℃
Classic 26650 large cylindrical cell (4S1P) architecture, providing steady regulated voltage output
Support flexible customization to meet diverse application scenarios

Inquire

Description Specifications Features Performance Testing

Description

This high-performance 12.8V 3.5Ah Lithium Iron Phosphate (LFP) battery pack, constructed using 26650 large cylindrical cells in a 4S1P configuration, provides stable and reliable power support for your equipment. Specially designed for portable devices, medical instruments, small energy storage systems, and various mobile terminals, it delivers continuous and stable high-voltage output along with an ultra-long cycle life, ensuring reliable, efficient, and safe power support even under frequent charge and discharge scenarios.

Lithium Iron Phosphate (LFP) battery cell system with excellent thermal and chemical stability, delivering high safety and stability.
Long cycle life, with a capacity retention rate remaining ≥80% after 2,500 complete charge and discharge cycles at room temperature.
Stable operation across a wide temperature range, supporting charging from 0 to 45°C and discharging from -10 to 60°C to meet standard operational environment needs.
Professional BMS protection board, integrating multiple safeguards against overcharge, overdischarge, overcurrent, short circuit, and high/low temperatures to ensure long-term, safe, and reliable battery pack operation.

Specifications

Model	26650-4S1P
Capacity	3.5Ah
Nominal Voltage	12.8V	LFP
Internal Resistance	≤20mΩ
Operating Temperature	Charging: 0~45℃
Operating Temperature	Discharging: -10~60℃
Cycle Life	2500 cycles ≥80%
Application Fields	Emergency starting battery, UPS backup power supply

We provide the following services

Flexible support for customized solutions
Reliable and stable performance
Samples and mass production available
OEM, ODM available

Performance Testing

Before shipment, each lithium battery undergoes rigorous testing to verify voltage, current, and other critical parameters, ensuring consistent performance and reliability.

Featured Products

7.6V 6500mAh High Capacity Industrial Li-Polymer Battery Pack
Home 3.2V 50Ah Wide-Temperature LiFePO4 Cylindrical Battery Cell for Sweepers & Low-Speed Logistics Vehicles 6500mAh High Capacity, Compact Size with Big Energy ≥80% Capacity Retention After 500 Cycles Internal Resistance…

Inquire
Custom 22.2V 10000mAh Long Flight Time Lithium Battery for UAV & Drones
Home 3.2V 50Ah Wide-Temperature LiFePO4 Cylindrical Battery Cell for Sweepers & Low-Speed Logistics Vehicles 22.2V standard voltage, perfectly compatible with mainstream industrial drone power systems NCM ternary lithium cell, smaller…

Inquire
3.2V 50Ah Wide-Temperature LiFePO4 Cylindrical Battery Cell for Sweepers & Low-Speed Logistics Vehicles
Home 3.2V 50Ah Wide-Temperature LiFePO4 Cylindrical Battery Cell for Sweepers & Low-Speed Logistics Vehicles Wide-temperature working range High-safety LiFePO4 system with professional BMS protection board Low internal resistance, effectively reducing…

Inquire

Ready topower yournext innovation?

Just a message away