Weatherproof 51.2V 50Ah Lithium Iron Phosphate Battery IP65 -20°C to 60°C

Product Overview
This 51.2V 50Ah lithium iron phosphate battery stores 2560 watt hours of energy in a compact IP65 rated enclosure. Built with 16 series cells and a single parallel string, it delivers reliable power for solar storage systems, RVs, off grid cabins, and industrial equipment. The integrated Battery Management System provides complete cell protection and balancing, while RS485 and CAN communication ports enable seamless integration with most hybrid inverters and monitoring systems.

Core Technical Specifications
Nominal voltage is 51.2V with 50Ah rated capacity and total energy of 2560Wh. Internal resistance is ≤35 milliohms for efficient power delivery. Round trip efficiency reaches 98 percent. Self discharge is less than 3 percent per month. Dimensions are 420mm width, 360mm depth, and 130mm height. Weight is 29 kilograms. The SPCC steel housing carries an IP65 rating, making it resistant to dust and low pressure water jets. Terminal type is SB50A.

Discharge Performance
Continuous discharge current is 50 amps, suitable for running appliances, inverters, and motors. Pulse discharge current reaches 150 amps for less than one second, handling surge loads during startup. BMS discharge cut off voltage is 40V with reconnect at 43.2V. Short circuit protection activates within 300 to 800 microseconds, ensuring fast fault isolation.

Charge Parameters
Charging follows the CC CV method with voltage range of 56.8V to 58.4V. For float charging at full state of charge, use 53.2V to 53.6V. The recommended charge current is 25 amps for optimal cycle life, while the maximum allowable charge current is 50 amps for faster charging. BMS charge cut off voltage is set to 58.4V to prevent overvoltage damage.

Cycle Life and Longevity
Rated for more than 4000 cycles at 100 percent depth of discharge while retaining over 80 percent of original capacity at 25°C with 0.5C charge and discharge rates. For a daily deep cycle application, this battery lasts over 10 years before reaching 80 percent state of health. The low self discharge allows extended idle periods without frequent maintenance charging.

Temperature Range
Discharge operates from -20°C to 60°C, covering cold winter conditions and hot equipment compartments. Charge temperature is 0°C to 55°C. Below freezing, the BMS blocks charging to protect cells from irreversible damage. Storage temperature range is -20°C to 35°C. BMS high temperature cut off activates at 65°C.

Communication and Monitoring
RS485 and CAN ports allow the battery to talk directly to compatible inverters and energy management systems. Real time data including voltage, current, temperature, state of charge, and fault codes can be read remotely. This makes the battery ideal for systems that require automated monitoring and control.

Applications
This 51.2V 50Ah battery is designed for home solar energy storage paired with 48V hybrid inverters. It also serves as a backup power bank for off grid cabins, a house battery for RVs and campervans, an energy storage unit for telecom base stations, and a power source for light electric vehicles and floor cleaning machines. The IP65 rating allows installation in outdoor enclosures and in vehicles where dust or splashing may occur.

Installation Recommendations
Mount the battery on a flat sturdy surface indoors or in an IP rated enclosure for outdoor use. The IP65 rating allows placement in engine compartments or underbody storage but avoid direct high pressure water spray. Use appropriate cables rated for 50A continuous current with SB50 compatible connectors. For inverters up to 3000W, 50A continuous discharge is sufficient. For higher power loads, consider parallel connection but note the maximum parallel configuration is 1P as specified. Do not exceed 16S series connection without consulting technical support.

User Benefits
Compared to lead acid battery banks, this lithium battery offers twice the usable capacity because 100 percent depth of discharge is allowed. Weight is significantly lower at 29kg versus 50 to 60kg for an equivalent lead acid bank. Maintenance is eliminated no watering, no terminal corrosion, no acid spills. Cycle life is eight to ten times longer than lead acid. Fast charging reduces downtime.

Warranty and Certifications
The battery comes with a standard manufacturer warranty (typically 5 years). It meets UN38.3 for transport, CE for European safety, and RoHS for environmental compliance. MSDS documentation is available. For OEM orders, custom branding and design services are offered. Free samples are available with freight charges applied.