LiFePO4 battery QOLTEC 53700 12.8V 9Ah — rechargeable lithium iron phosphate battery for backup and portable power

The LiFePO4 battery QOLTEC 53700 12.8V 9Ah is a rechargeable lithium iron phosphate energy storage unit designed for compact backup and portable power applications. With a nominal voltage of 12.8V and usable capacity of 9Ah, this battery provides a stable output suitable for small UPS units, portable power packs and lightweight off-grid systems. The LiFePO4 chemistry ensures a longer cycle life and greater thermal and chemical stability compared with traditional lead-acid cells, while keeping the physical size and weight appropriate for mobile or space-constrained installations.

Advantages

The battery delivers consistent voltage under load and supports a high number of charge/discharge cycles, reducing the need for frequent replacements. Its lithium iron phosphate chemistry is inherently more stable and less prone to thermal runaway than other lithium formulations, which improves operational safety for indoor and portable use. Lower self-discharge and higher energy density compared with comparable lead-acid units result in longer standby times and a smaller footprint for equivalent stored energy.

Suitable for

• Backup power for small UPS systems and network equipment
• Portable power packs for field equipment and camping
• Small off-grid solar storage and energy buffering
• Replacement of lead-acid batteries in compact installations

Key specifications

• Nominal voltage: 12.8 V
• Rated capacity: 9 Ah
• Battery chemistry: Lithium iron phosphate (LiFePO4)
• Rechargeable: yes
• Suitable for cyclic and standby use
• Compact, lightweight form factor for portable applications

How to use

Install the battery according to the device or system manufacturer instructions, observing correct polarity and secure mounting. Use a compatible charger or battery management system (BMS) designed for 12.8V LiFePO4 cells to ensure proper charging voltages and balancing. For UPS or inverter connections, follow the inverter manufacturer’s guidance on battery bank configuration and connection methods. Allow the battery to reach room temperature before charging if it has been stored in a cold environment.

Usage recommendations

For longest service life, charge the battery with a charger or BMS configured for LiFePO4 chemistry, avoid deep discharges beyond the manufacturer’s recommended depth of discharge, and store the battery at partial state of charge (around 40–60%) for extended periods. Keep the battery in a dry, ventilated location away from direct heat sources and follow local regulations for transport and disposal of lithium batteries.