Rechargeable LiFePO4 battery NPP LFP12.8-18 12.8V 18Ah for UPS, solar and portable power

NPP LFP12.8-18 is a rechargeable LiFePO4 (lithium iron phosphate) battery with a nominal voltage of 12.8 V and a capacity of 18 Ah. It is designed for UPS systems, solar energy installations, portable power packs and other backup and mobile applications where stable output, long cycle life and reduced weight are important. The battery uses lithium‑iron phosphate chemistry and an intelligent battery management system to provide reliable performance and enhanced safety compared with conventional lead‑acid batteries.

Advantages

The NPP LiFePO4 battery delivers up to 100% usable energy and charges faster than sealed lead‑acid batteries. It is about 60% lighter than equivalent lead‑acid units and demonstrates low self‑discharge (≤3% per month at 25°C). The cell chemistry and integrated BMS allow high discharge rates and a long service life — over 3,000 cycles at 100% depth of discharge — as well as improved float/calendar life.

Suitable for

• Uninterruptible Power Supplies (UPS)
• Solar and wind energy storage systems
• Portable power stations and camping power
• RVs and marine applications, including powering fish finders
• Telecommunication and data center backup

When it may not be suitable

This battery may not be suitable for applications that require voltages or capacities other than 12.8 V / 18 Ah without additional system design (e.g., many modules in series or parallel). Also, devices that strictly require lead‑acid specific charging profiles without a compatible charger may need an appropriate LiFePO4‑capable charger or charge controller.

Key specifications

• Nominal voltage: 12.8 V
• Rated capacity (5 h, 25°C): 18 Ah
• Energy: 230 Wh
• Charge efficiency (0.2C, 25°C): 99.5%
• Cycle life: >3,000 cycles at 100% depth of discharge
• Self‑discharge: ≤3% per month at 25°C
• Maximum modules: up to 4 in series per string, up to 6 in parallel
• Terminal type: T2 / F2 (6.3 mm)
• Dimensions (L×W×H): 151±2 × 99±2 × 94±2 mm (total height 94±2 mm)

How to use

Install the battery in a dry, ventilated location and connect using the T2 / F2 (6.3 mm) terminals. Use a charger or solar charge controller configured for LiFePO4 chemistry and observe recommended charge/discharge currents to maintain long life. For higher voltage or capacity, connect modules according to the allowed configuration limits (maximum 4 in series per string and up to 6 in parallel) and ensure the system’s BMS or external management supports the combined setup.

What to consider before purchase

• Verify that your charger or inverter supports LiFePO4 charge profiles
• Confirm required voltage and capacity and whether series/parallel expansion is needed
• Check physical dimensions and terminal type (T2 / F2) for compatibility with your enclosure

Usage recommendations

For best results, use a LiFePO4‑compatible charger or MPPT solar charge controller, avoid deep discharge beyond recommended limits when possible, and allow proper ventilation. When paralleling or stringing batteries, ensure balanced wiring and compatible BMS settings to maintain performance and safety.