3 products
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SKU: PES-GAP-eg4-lithium-battery-Vendor:EG4Regular price $1,455.00 USDRegular priceUnit price per
$1,592.31 USDSale price $1,455.00 USDSale -
SKU: PES-ESS-BTS-0372MPN NOVendor:Crown BatteryRegular price $1,143.86 USDRegular priceUnit price per
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SKU: PES-ESS-BTS-0226MPN NOVendor:EG4 ElectronicsRegular price $1,298.68 USDRegular priceUnit price per
400Ah Batteries for Solar & Backup Systems
Shop 400Ah batteries at PES Supply for solar, off-grid, and backup power applications. 400 amp-hour batteries provide substantial energy storage in a manageable size, ideal for medium to large battery banks. Available in LiFePO4 lithium, AGM, and gel chemistries from trusted brands including EG4, Fortress Power, Universal Power Group, and more.
400Ah Battery Options
- LiFePO4 lithium – 6,000+ cycles, 80% DoD, built-in BMS
- AGM – budget-friendly, maintenance-free
- Gel – deep-cycle, heat-tolerant
- 12V, 24V, and 48V options
- Series/parallel configurations for any voltage and capacity
A 400Ah battery at 48V stores approximately 19kWh of usable energy (at 80% DoD for lithium). Multiple batteries can be connected in series for higher voltage or parallel for more capacity. Our team helps you size a bank matched to your inverter, loads, and autonomy requirements.
Browse the full selection below and order today with fast shipping from PES Supply. Questions? Our solar and backup power experts are ready to help you spec the right system—contact us.