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Deep Cycle Solar Batteries

Deep cycle batteries store the energy generated by your solar panels. Shop the best solar battery brands like Crown, Fullriver, Discover, SimpliPhi, Rolls, and more.

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Shop Featured Deep Cycle Solar Batteries

Our Top Picks

ModelPart No.DescriptionPrice
9901382Rolls Surrette S-1660 Flooded Battery 1284Ah 2V (S2 L16-HC)
9949467Fullriver AGM DC400-6 Sealed Battery 415Ah 6V L16 size
9960100Crown CR430 Flooded Battery 430Ah 6v L16 size
9960101Crown AGM 6CRV220 Sealed Battery 220Ah 6v Golf Cart size
9960020Crown AGM 2CRV1200 Sealed Battery 2V
9979990Discover AES 6.6kWhr / 48VDC w Xanbus
9580101SimpliPhi 3.8 kWh Smart-Tech LFP Battery 48v 
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solar battery guide
FREE Solar Battery Guide

Deep Cycle Batteries 101

Today's solar batteries are better than ever. So are the devices that regulate and protect them. But you still need to do your homework to make sure you get the best solar battery storage solution for your needs.

There are two main kinds of deep cycle batteries: lead acid and lithium. Lead acid batteries have a lower upfront cost, while lithium batteries have the longest lifespan. Flooded lead acid batteries require maintenance, and more expensive sealed lead acid batteries are maintenance free.

Batteries are the primary storage source for off-grid systems, but they also work as an emergency backup power source for grid-tied systems. Installing a grid-tied system with a solar battery backup also gives you the option to sell excess stored power back to the utility company at a later time.

We use deep cycle batteries to store power generated by solar panels, but they have plenty of other applications. Small electric vehicles and industrial equipment like forklifts, floor cleaners, scissor lifts, and golf carts are also powered by deep cycle batteries.

For more in-depth info on batteries, be sure to read our battery basics and battery maintenance pages

Battery Types

Monocrystalline Solar Panel

Flooded Lead Acid

  • Lowest upfront cost $ $ $ $
  • Typical lifespan: 5-7 years
  • Requires maintenance

Lead acid batteries represent a tried and true technology that has been around for years. Flooded lead acid batteries have the lowest upfront cost, but the tradeoff comes in the form of maintenance -- every month you’ll need to check the water level, adding distilled water to keep them topped off. These batteries expel built-up hydrogen gas, so they need to be installed in a vented enclosure. They also need periodic equalize charges.

Monocrystalline Solar Panel

Sealed Lead Acid

  • More expensive $ $ $ $
  • Typical lifespan: 3-5 years
  • Maintenance-free

Sealed lead acid batteries are a variation of lead acid that eliminates the maintenance. But these come at a higher price and usually a slightly shorter lifespan. There are a few types of sealed lead acid batteries - gel and absorbent glass mat (AGM.) There are some differences in battery construction, but generally speaking, both types are used in off-grid solar and have similar benefits.

Lithium Battery


  • Highest upfront cost $ $ $ $
  • Typical lifespan: 10+ years
  • Maintenance-free

Lithium batteries are the most efficient. They waste significantly less power in the charge/discharge process. They can also be cycled deeper, using more of their capacity. Lithium batteries come in different types. The off-grid batteries we use are called Lithium Ferro Phosphate (LiFePO4, commonly called “LFP”). The long lifespan and high charge/discharge rates make LFP batteries the ideal solution for off-grid systems

Todd, The Off-Grid Guru

Questions? Chat with us!

Todd built his own 3 kW solar system to power his Northern California home, where he lives off the grid with his wife and children. Todd and the rest of the Wholesale Solar team are here to answer any questions you have about designing a system that will fit your needs. Give us a call—we’re here to help.

Shop the best solar battery brands like Crown, Fullriver, Discover, SimpliPhi, Rolls, and more.

Whether you're looking for a 6v or 12v solar battery, check out the most trusted brands in the industry.

Crown logo

Types: Flooded/Sealed Lead Acid

Crown is a leading manufacturer of lead acid batteries, based in Fremont, Ohio. We stock several different models of Crown batteries, including US-made options.
Rolls logo

Types: Flooded/Sealed Lead Acid

Rolls Surrette is one of North America's leading lead-acid battery producers and Canada's only remaining independent battery manufacturer. Located in Springhill, Nova Scotia, Rolls offers a wide range of premium deep cycle batteries.
Fullriver logo

Type: Sealed Lead Acid

High quality sealed lead acid batteries with an industry-leading 7 year warranty. Fullriver Battery offers a wide range of sizes and options available for AGM and Gel sealed batteries in different voltages and capacities.
discover logo

Type: Lithium

Discover is a world leader in designing and manufacturing deep cycle batteries for a wide range of industries. Their Advanced Energy Storage (AES) solution is a high efficiency Lithium battery with a 10-year warranty.
simpliphi logo

Type: Lithium

SimpliPhi's lithium batteries are drop-in upgrades for traditional lead-acid batteries. SimpliPhi batteries are safe, easy to use, non-toxic, and designed and built in California.
Shop All Solar Batteries for sale and compare pricing and specs.
Complete Solar Power System

Looking for a complete system?

Deep cycle batteries store extra solar power, essentially turning your home into your own power company. If you're looking at batteries, chances are you also need a complete off-grid system, including solar panels, racking, a power center and more.

You’ll need several batteries to support a full-scale system. So we've taken the time to put together 12, 24 and 48 - volt battery banks specifically designed to work with our off-grid systems.

Still not sure what kind of system you’re looking for? Get our FREE Getting Started Guide. It covers all the basics of solar power. If you already know off-grid is your thing, check out the links below to size up the right batteries for your system.

image of getting started with solar guide
Download Our Solar Battery Guide
A poorly designed system can ruin your batteries. Our Solar Battery Guide will help you size your battery bank properly and keep things running smoothly.
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