Solar Battery Backup

A solar battery backup system ensures you have power when the grid goes down, giving you peace of mind and greater energy independence. Whether you’re protecting your home from outages,...

A solar battery backup system ensures you have power when the grid goes down, giving you peace of mind and greater energy independence. Whether you’re protecting your home from outages, reducing reliance on utilities, or just wanting more control over your energy use, a solar backup system is the smart solution.

At Off-Grid Source, we make choosing the right solar battery backup simple, transparent, and fully supported.

Why Add Battery Backup to Your Solar Panels?

Solar panels produce energy during the day, but without storage you’re still tied to the grid after sunset. Adding a battery backup for solar panels lets you store excess energy and use it anytime. Benefits include:

Power during outages – keep refrigerators, lights, and medical devices running
Lower utility costs – store energy by day and use it at night to avoid peak rates
Energy independence – reduce or eliminate reliance on the grid
Quiet, clean power – no fumes, noise, or fuel like gas generators
Flexible setups – sized for everything from small homes to whole-house coverage

Home Solar Battery Backup Systems

Our collection of home solar battery systems is built for real-world needs. Customers trust them for:

Residential backup – reliable power for daily use and critical appliances
Expandable systems – start small and grow as your needs change
Durable, long-lasting batteries – engineered to last for years of charge cycles
Solar + storage – ideal for homeowners looking for dependable off-grid capability

Solar + Storage for Everyday Life

A solar panel and battery system isn’t just for emergencies. It’s a practical upgrade that makes everyday living more reliable and affordable. Families use solar power batteries for home to keep bills predictable, while small businesses and off-grid homeowners use battery backup systems to reduce downtime and protect operations.

Transparent Pricing and Expert Support

When shopping for a solar battery backup system, you’ll always find clear pricing and honest availability at Off-Grid Source. No hidden fees, no confusing listings - just high-quality solar backup power options backed by trusted support.

Our expert team is here to help you compare solar battery backup specs, size your system correctly, and choose with confidence.

Energy Security Made Simple

Adding a home solar battery backup doesn’t have to be complicated. We provide guidance, vetted products, and ongoing support so you can make the transition smoothly. Whether you need a small solar back up battery for critical circuits or a whole-home system, you’ll find the right fit here.

With Off-Grid Source, you get more than just products - you get a trusted partner committed to helping you achieve lasting energy security.

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Renogy
Renogy PRO 3000-Watt 12-Volt Pure Sine Wave Inverter w/ EcoSleep Mode

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Current Price $749.99

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3000W 12V Pro Pure Sine Wave Inverter A new height of power safety and energy efficiency. Transforming Power with Safety and Adaptability 6000W...
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Original Price $1,011.99

Current Price $749.99

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Original Price $195.99

Current Price $144.99

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Advanced pure sine wave technology to maximize your system efficiency. Dimensional Reference Guide Before installing the inverter, please n...
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Current Price $144.99

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Renogy
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Original Price $593.99

Current Price $439.99

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Renogy Pure Sine Wave Power Inverter The Renogy pure sine wave inverter efficiently converts DC power from batteries into AC power, perfect for po...
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Original Price $593.99

Current Price $439.99

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Renogy
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Original Price $498.99

Current Price $369.99

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Whether you're powering up a van, semi-truck, 5th wheel, cabin, or any remote hideaway, this inverter is your ticket to uninterrupted power. Pure s...
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Original Price $498.99

Current Price $369.99

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Discover Energy
Discover Energy AES Rackmount ESS Battery Module 5.0 kWh 51.2V 100 AH Heated - 3U 19 Inch (Backorder: No Exact Ship Date - Ships Upon Restock)

$1,750.00

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Discover Energy AES Rackmount ESS Battery Module 5.0 kWh 51.2V 100 AH Heated - 3U 19 Inch The Discover AES Rackmount ESS Battery Module (Heated)...
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$1,750.00

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Lion Energy
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Original Price $349.00

Current Price $299.00

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Original Price $349.00

Current Price $299.00

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Lion Energy
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Original Price $2,449.00

Current Price $2,099.00

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Lion Energy UT™ 3500 HTR - 12V Battery with Heater, 280Ah (3584Wh) LiFePO4, 12.8V Bluetooth The Lion Energy UT™ 3500 HTR is a high-capacity, hea...
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Original Price $2,449.00

Current Price $2,099.00

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Current Price $999.00

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Lion Energy UT 1300 BT-H Battery with Internal Heater (12V, 105Ah, LiFePO4) The Lion Energy UT 1300 BT-H is a high-performance lithium iron phos...
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Current Price $999.00

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Victron Energy
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Original Price $297.00

Current Price $252.45

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Original Price $297.00

Current Price $252.45

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Victron Energy
Victron Phoenix 12V 3000VA Inverter – 120V AC (PIN123020100)

Original Price $1,290.00

Current Price $1,096.50

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Original Price $1,290.00

Current Price $1,096.50

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Victron Energy
Victron Phoenix 24V 3000VA Inverter – 120V AC (PIN243020100)

Original Price $1,290.00

Current Price $1,096.50

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Victron Energy Phoenix Inverter 24/3000 120VAC (Model: PIN243020100) Dependable Power for Demanding Applications The Victron Phoenix 24/3000 VE.Bus...
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Original Price $1,290.00

Current Price $1,096.50

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Victron Energy
Victron Phoenix 24V 800VA Inverter – VE.Direct, NEMA 5-15R, 120V AC (PIN241800500)

Original Price $241.00

Current Price $204.85

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Original Price $241.00

Current Price $204.85

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Victron Energy
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Original Price $139.00

Current Price $118.15

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Victron Energy Phoenix 24/375 VE.Direct Inverter (Model: PIN243750500, NEMA Rated) Reliable Power. Compact Design. Exceptional Efficiency. The Vict...
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Original Price $139.00

Current Price $118.15

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Victron Energy
Victron Phoenix 24V 250VA Inverter – VE.Direct, NEMA 5-15R, 120V AC (PIN242510500)

Original Price $114.00

Current Price $96.90

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Victron Energy Phoenix 24/250 VE.Direct Inverter (Model: PIN242510500, NEMA Rated) Efficient, Reliable Power—Wherever You Need It The Victron Energ...
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Original Price $114.00

Current Price $96.90

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Victron Energy
Victron Phoenix 12V 800VA Inverter – VE.Direct, NEMA 5-15R, 120V AC (PIN121800500)

Original Price $268.00

Current Price $227.80

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Current Price $227.80

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Original Price $125.00

Current Price $106.25

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Victron Energy PIN123750500 Phoenix 12/375 VE.Direct, NEMA The Victron Energy PIN123750500 Phoenix 12/375 VE.Direct, NEMA is a reliable inverte...
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Current Price $106.25

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Victron Energy
Victron Phoenix 24V 500VA Inverter – VE.Direct, NEMA 5-15R, 120V AC (PIN245010500)

Original Price $174.00

Current Price $147.90

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Victron Energy PIN245010500 Phoenix 24/500 VE.Direct, NEMA The Victron Energy PIN245010500 Phoenix 24/500 VE.Direct, NEMA is a reliable and eff...
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Original Price $174.00

Current Price $147.90

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Victron Energy
Victron Phoenix 12V 500VA Inverter – VE.Direct, NEMA 5-15R, 120V AC (PIN125010500)

Original Price $156.00

Current Price $132.60

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Victron Energy PIN125010500 Phoenix 12/500 VE.Direct, NEMA The Victron Energy PIN125010500 Phoenix 12/500 VE.Direct, NEMA is a reliable and eff...
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Current Price $132.60

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Original Price $102.00

Current Price $86.70

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Victron Energy PIN122510500 Phoenix 12/250 VE.Direct, NEMA The Victron Energy PIN122510500 Phoenix 12/250 VE.Direct, NEMA is a compact and reli...
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Original Price $102.00

Current Price $86.70

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Victron Energy
Victron Quattro 48V 3000VA Inverter/Charger – 35A Charging, Dual 50A AC Inputs, 120V Output (QUA483021100)

Original Price $1,553.00

Current Price $1,320.05

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Original Price $1,553.00

Current Price $1,320.05

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Victron Energy
Victron MultiPlus C 12V 2000VA Inverter/Charger – 80A Charging, 50A Transfer Switch, 120V Output (UL 458, CMP122200102)

Original Price $1,064.00

Current Price $904.40

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Original Price $1,064.00

Current Price $904.40

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Victron Energy
Victron MultiPlus 24V 3000VA Inverter/Charger – 70A Charging, 50A Transfer Switch, 120V Output, VE.Bus (UL 1741, PMP242301102)

Original Price $1,394.00

Current Price $1,184.90

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Original Price $1,394.00

Current Price $1,184.90

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Victron Energy
Victron MultiPlus 12V 3000VA Inverter/Charger – 120A Charging, 50A Transfer Switch, 120V Output (UL 1741 & 458 Certified, PMP122301102)

Original Price $1,375.00

Current Price $1,168.75

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Original Price $1,375.00

Current Price $1,168.75

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Victron Energy
Victron MultiPlus 24V 2000VA Inverter/Charger – 120V Output, 50A Charging, Built-In Transfer Switch (CMP242200100)

Original Price $909.00

Current Price $772.65

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Original Price $909.00

Current Price $772.65

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