Deep cycles 340ah Lithium cell Grade A 320ah 300ah lifepo4 battery for DIY solar applications. These high-capacity lithium iron phosphate batteries are ideal for solar energy storage and off-grid backup systems.

280ah Lifepo4 lithium battery is one of the favorite lithium cells by DIY users for solar energy storage and off grid back up. Suitable for caravan, camp caravan, golf cart, forklift, electrical bike, motorbike, and various other applications.

Screw connected - the prismatic battery cell can be easily mounted/connected with bus bars and screws, making it ideal for DIY projects.

• Safety: safest Lithium battery, built in PCM/PCB, none fire or explosive
• Clean and Green energy, no toxic material contained
• Long life cycle, 80% capacity remain after 500 times deep cycle
• No memory effect, highly efficient charge anytime, no reduction of capacity
• Operation temperature: -20~55°C
• Good performance at high temperature and high temperature resistance
• Low self-discharge rate: < 3% monthly

• Exercise caution when working with all electrical equipment
• Wear safety glasses, gloves etc 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 & use thereafter
• Dispose of properly to recycling or similar facility
• Do Not submerge in water
• Do Not allow to come in contact with direct heat, extreme temperatures or fire
• Prevent harsh impacts or extreme vibrations

Deep cycle, more than 2000 times life span. Longer life than lead acid battery.

Package: Foams, UN carton

This lithium battery is available for many applications including golf cart, RV, solar storage system, E-motorcycle, Home energy storage system, powerwall etc.

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

• Please check all batteries voltage and inner resistance and make sure they are balanced before DIY
• All batteries will be tested before shipment but you need to test there too
• You must have basic knowledge of electronics and battery assembling
• If you know nothing please learn more before doing assembling
• No refund or warranty for any unprofessional operation
• Some of the cells will have small scratches due to moving or long transportation, but it won't affect usage at all

By sea + Express (DDP, Tax free)

ETD: 5-8 days | ETA: 25-35 days after sailing

The tracking will be updated after pick up by local express. Usually it will take around 15-25 days after sailing.

By railway + Express (DDP, Tax free). Except Switzerland, Romania

ETD: 5-8 days | ETA: 30-45 working days after shipping

The tracking will be updated after pick up by local express. Usually it will take around 25-40 working days after shipping.

Other: Some remote areas not listed. Please provide shipping address and zip code to us to check.

Whether you purchase Grade A, B, or C cells, or used LiFePO4 cells, initial balancing is essential to bring them to the same state of charge. Using voltage alone to determine state of charge is unreliable due to the flat charge and discharge curve characteristic of this chemistry.

Proper initial balancing ensures accurate capacity test results. If one cell triggers your BMS high or low voltage cutoff prematurely, your capacity measurements will be inaccurate.

While connecting cells in parallel allows natural balancing over time (weeks or months depending on battery bank size), manual top balancing is recommended for:

• Large battery banks
• Cells with significant internal resistance variations
• Applications with large loads
• Accurate capacity balancing requirements

Even with new cells arriving at similar voltages, manual top balancing ensures optimal performance and longevity of your battery pack.