About Lithium Batteries
Lithium Batteries for Solar & Backup
Power your solar, off-grid, or backup system with high-performance lithium batteries from PES Supply. Lithium batteries offer dramatically longer cycle life, lighter weight, and deeper discharge capability compared to lead-acid—making them the smart choice for energy storage. Shop brands including EG4, Fortress Power, BYD, SONNEN, Victron Energy, and more.
Lithium Battery Advantages
- 3,000-6,000+ cycles vs. 500 for lead-acid
- 80% depth of discharge safe and routine
- Lighter and smaller for equivalent capacity
- Built-in BMS for cell protection and balancing
- Flat discharge curve maintains voltage longer
Lithium batteries include both LiFePO4 (lithium iron phosphate) and NMC chemistries. LiFePO4 offers the best safety and longevity, while NMC provides higher energy density. Our team can help you choose the right chemistry, voltage, and capacity for your inverter and application.
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.
141 products
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SKU: PES-ESS-BTS-0227MPN NOVendor:EG4 ElectronicsRegular price $1,577.80 USDRegular priceUnit price per
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SKU: PES-ESS-BTS-0222MPN NOVendor:EG4 ElectronicsRegular price $3,692.26 USDRegular priceUnit price per
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Top Rated
![8.8kW Complete Off-Grid Solar Power System - 12,000W 120/240V [14.3kWh Lithium Battery] + 20x 405W Mono Solar Panels](//www.portlandiaelectric.supply/cdn/shop/files/Sol-Ark-Web-kit-36__33118.1762471987_c347e99c-3bba-4e2e-868a-eeb835805d59.jpg?v=1785271817&width=533)
SKU: GAP-P2-88KWCOMPLETEOFFGRIDSVendor:the solar storeRegular price $10,692.00 USDRegular priceUnit price per$10,695.00 USDSale price $10,692.00 USDSold out -
Top Rated
![9.72 KW Complete Off-Grid Solar Power System - 12,000W 120/240V [28.6kWh Lithium Battery Bank] + 24 x 405W Mono Solar Panels](//www.portlandiaelectric.supply/cdn/shop/files/Sol-Ark-Web-kit-36__33118.1762471987_c55a1a1d-6e15-441a-b212-50cb915908fd.jpg?v=1785271897&width=533)
SKU: GAP-P2-972KWCOMPLETEOFFGRIDVendor:the solar storeRegular price $14,892.00 USDRegular priceUnit price per$14,895.00 USDSale price $14,892.00 USDSold out -
Top Rated
SKU: GAP-P2-192KWOFFGRIDSOLARPOWVendor:the solar storeRegular price $39,992.00 USDRegular priceUnit price per$39,995.00 USDSale price $39,992.00 USDSold out -
SKU: GAP-P2-PYTES512KWH512VOLT10Vendor:pytesRegular price $1,296.00 USDRegular priceUnit price per
$1,299.00 USDSale price $1,296.00 USDSold out -
SKU: GAP-P2-PYTESV16LITHIUMBATTEVendor:pytesRegular price $3,462.99 USDRegular priceUnit price per
$3,465.99 USDSale price $3,462.99 USDSold out -
Top Rated
SKU: GAP-P2-SUNGOLDOFFGRIDSOLARKVendor:portable sun llcRegular price $5,799.00 USDRegular priceUnit price per$5,802.00 USDSale price $5,799.00 USDSold out -
Top Rated
SKU: GAP-P2-COMPLETEGROWATTMIDNIVendor:portable sun llcRegular price $8,551.50 USDRegular priceUnit price per$8,554.50 USDSale price $8,551.50 USDSold out -
Top Rated
SKU: GAP-P2-COMPLETEHYBRIDSOLARKVendor:portable sun llcRegular price $16,654.44 USDRegular priceUnit price per$16,657.44 USDSale price $16,654.44 USDSold out -
SKU: GAP-P2-FORTRESSPOWEREFLEXMAVendor:fortress powerRegular price $1,446.00 USDRegular priceUnit price per
$1,449.00 USDSale price $1,446.00 USDSold out -
SKU: GAP-P2-EG4LIFEPOWER424V512KVendor:eg4 electronicsRegular price $1,346.00 USDRegular priceUnit price per
$1,349.00 USDSale price $1,346.00 USDSold out -
SKU: GAP-P2-EG4CHARGEVERTERPLUS4Vendor:eg4 electronicsRegular price $644.99 USDRegular priceUnit price per
$647.99 USDSale price $644.99 USDSold out -
SKU: GAP-P2-EG4LLS512KWH48V100AHVendor:eg4 electronicsRegular price $1,426.99 USDRegular priceUnit price per
$1,429.99 USDSale price $1,426.99 USDSold out -
SKU: GAP-P2-EG4LLS512KWH24V200AHVendor:eg4 electronicsRegular price $1,426.99 USDRegular priceUnit price per
$1,429.99 USDSale price $1,426.99 USDSold out -
SKU: GAP-P2-EG4LLS512KWH12V400AHVendor:eg4 electronicsRegular price $1,426.99 USDRegular priceUnit price per
$1,429.99 USDSale price $1,426.99 USDSold out -
SKU: GAP-P2-EG4LIFEPOWER448V512KVendor:eg4 electronicsRegular price $1,496.00 USDRegular priceUnit price per
$1,499.00 USDSale price $1,496.00 USDSold out -
SKU: GAP-P2-EG4143KWHINDOORWALLMVendor:eg4 electronicsRegular price $3,346.00 USDRegular priceUnit price per
$3,349.00 USDSale price $3,346.00 USDSold out
![8.8kW Complete Off-Grid Solar Power System - 12,000W 120/240V [14.3kWh Lithium Battery] + 20x 405W Mono Solar Panels](http://www.portlandiaelectric.supply/cdn/shop/files/Sol-Ark-Web-kit-36__33118.1762471987_c347e99c-3bba-4e2e-868a-eeb835805d59.jpg?v=1785271817&width=533)
![9.72 KW Complete Off-Grid Solar Power System - 12,000W 120/240V [28.6kWh Lithium Battery Bank] + 24 x 405W Mono Solar Panels](http://www.portlandiaelectric.supply/cdn/shop/files/Sol-Ark-Web-kit-36__33118.1762471987_c55a1a1d-6e15-441a-b212-50cb915908fd.jpg?v=1785271897&width=533)
Lithium Batteries for Solar & Backup
Power your solar, off-grid, or backup system with high-performance lithium batteries from PES Supply. Lithium batteries offer dramatically longer cycle life, lighter weight, and deeper discharge capability compared to lead-acid—making them the smart choice for energy storage. Shop brands including EG4, Fortress Power, BYD, SONNEN, Victron Energy, and more.
Lithium Battery Advantages
- 3,000-6,000+ cycles vs. 500 for lead-acid
- 80% depth of discharge safe and routine
- Lighter and smaller for equivalent capacity
- Built-in BMS for cell protection and balancing
- Flat discharge curve maintains voltage longer
Lithium batteries include both LiFePO4 (lithium iron phosphate) and NMC chemistries. LiFePO4 offers the best safety and longevity, while NMC provides higher energy density. Our team can help you choose the right chemistry, voltage, and capacity for your inverter and application.
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.