Solar Off-Grid System Complete Kit with 5kW-25kW Inverter, MPPT Controller & LiFePO4 Battery for Home Energy Storage

KingKong Battery maintains comprehensive stock in China, Poland EU, US, CA, and UK locations for:

• 3.2V LiFePO4 cells
• 12V LiFePO4 battery packs

With 13 years of battery industry experience, we've served over 12,000 customers across 80+ countries with 4 overseas warehouses. We maintain a 90% repurchase rate, 99.5% on-time delivery rate, and 98% positive feedback.

We are direct distributors for EV, CATL, LISHEN, CALB, and REPT batteries. All batteries are 100% original Grade A and brand new, with weekly fresh stock of newly produced cells.

100% tested batteries with matched voltage and internal resistance. We welcome QC checking and online video verification before shipping.

Self-operated overseas warehouses and repair centers in Poland and Germany provide complete product usage guidance and technical support. Full after-sales service for non-artificial quality issues.

OEM/ODM supported with experienced energy storage structural and software engineers. Our marketing team offers one-on-one support and comprehensive marketing solutions.

All single batteries undergo over 3 tests before shipping to ensure top quality with full capacity, matched voltage, and internal resistance.

KingKong Battery is an official distributor of EVE, HC, and NDSD brands and supplies safety pack accessories. We provide technical support for BMS selection and inverter protocol matching.

Warranty period: 5 years from successful delivery date. If single battery capacity falls below 80% of initial capacity, provide test pictures or video for replacement or solution.

• DIY battery packs must have cells balanced (same voltage) before assembly
• Professional testing ensures voltage, resistance, and appearance quality before shipment
• 15-day testing period upon arrival for return eligibility
• Returned batteries must be unused with intact electrodes, no welding, no wear, and good appearance
• Buyers responsible for return shipping fees