Battery Energy Storage Systems

Keeping the fridge, lights, and internet running through an outage starts with the right inverter battery setup. Tell us what you need to power and for how long, and we'll help you choose an inverter and battery combination built for those loads.

Variety of Inverter Battery Systems

This collection brings together solar inverters and batteries as complete energy storage systems and inverter battery bundles, so you are not matching parts on your own. 

A properly sized battery inverter keeps your lights, appliances, and electronic devices running during power outages, whether you stay connected to the utility grid or live fully off-grid. Each inverter converts the DC power stored in your battery bank into household AC power, so your circuits run the way they do on any normal day.

Each system pairs its battery bank with a hybrid or all-in-one inverter that accepts solar input, so you can charge from your solar panels during the day and run on stored power at night. Panels are sold separately for most systems, so check each product's What's Included list.

Use the Solar System Size Calculator to estimate the panel array, battery, and inverter size for your loads.

Versatile Inverter Output and Battery Capacity

These systems deliver 6 kW to 22.8 kW of inverter output and 16 kWh to 96 kWh of battery storage. The EG4 and Sol-Ark systems let you choose 16 kWh, 32 kWh or 48 kWh of battery capacity, though the EG4 6000XP stops at 32 kWh.

The SunGold Power PowerMax and MidNite Power bundles include outdoor-rated batteries, and the MidNite Power LiFePO4 battery is rated for 8,000 cycles at 77°F. SunGold Power kits supply 120/240V split-phase power for standard U.S. home circuits.

Why Shop Battery Storage Systems From Off-Grid Source

As an authorized dealer for every brand we sell, Off-Grid Source backs your purchase with full manufacturer warranties. Shipping is free to the lower 48 states, and most orders arrive in 3 to 10 business days.

Larger battery systems ship by freight, so the carrier will schedule a delivery appointment with you. Inspect the shipment on arrival, note any visible damage on the delivery receipt, and email photos within 72 hours so we can start a claim.

Found a lower price from an authorized dealer’s online store? Tell us before you check out, and we’ll match it. Uninstalled, unused items can be returned within 30 days of purchase. Return shipping is free if something arrives damaged or defective.

Our U.S.-based team is reachable by phone, email, or live chat. Send us your load list, and we'll confirm your inverter battery setup before you check out.