CALB 280Ah Lifepo4 Battery with 9000 Cycles DOD 80% 3.2V 280Ah Solar Energy Storage

CALB is a renowned research and manufacturing company specializing in battery technology. The group holds numerous intellectual properties, making their batteries highly popular in the market. Over the years, CALB products have been shipped worldwide, contributing to green power utilization and reducing CO2 emissions.

9000 cycles: 0.5C charge to 3.65V, 0.5C discharge to 2.5V as a cycle. After 9000 cycles, 80% capacity remains.

Real capacity: 300-304Ah

280Ah LiFePO4 lithium battery is a favorite choice for DIY users in solar energy storage and off-grid backup systems. Ideal for caravan, camp caravan, golf cart, forklift, electrical bike, motorbike, and more.

Screw-connected prismatic battery cells can be easily mounted and connected with bus bars and screws, making them ideal for DIY projects.

• Safety: Safest lithium battery with built-in PCM/PCB, non-flammable and non-explosive
• Clean and Green energy: No toxic materials contained
• Long life cycle: 80% capacity remains after 500 deep cycles
• No memory effect: Highly efficient charging anytime with no capacity reduction
• Operation temperature: -20~55°C
• Good performance at high temperature with high temperature resistance
• Low self-discharge rate: < 3% monthly

• Exercise caution when working with electrical equipment
• Wear safety glasses and gloves when appropriate
• Ensure cells are within operating temperature range prior to use
• Do not use if cells are punctured, damaged, or leaking
• Provide adequate protection to cells during assembly and use
• Dispose of properly at recycling facilities
• Do not submerge in water
• Do not expose to direct heat, extreme temperatures, or fire
• Prevent harsh impacts or extreme vibrations

Foams and UN carton packaging for safe transportation.

• Do not submerge the battery in water
• Do not insert batteries with (+) and (-) reversed
• Do not disassemble, dispose in fire, heat, or short circuit
• Do not expose batteries to sunlight for long periods
• Do not keep batteries close to children
• Do not short circuit the battery in any situation
• Do not discharge new batteries - fully charge them first
• Do not open the battery safety valve
• Do not violently wrest the screw on the terminal
• Do not mix different brands of batteries in one pack
• Do not mix different capacity or condition batteries together

Whether using grade A, B, or C cells, or used LiFePO4 cells, initial balancing is essential to bring them to the same state of charge. Voltage alone is unreliable for determining state of charge in this chemistry due to the flat charge and discharge curve.

Proper initial balance ensures accurate capacity test results. If cells are unbalanced, it can trigger BMS high or low voltage protection, leading to inaccurate capacity readings. For large battery banks or cells with varying internal resistance, manual top balancing is recommended regardless of initial voltage readings.