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2 YR WARRANTY
Storage for Solar
Solar & Off-Grid Batteries
Deep cycle storage for solar arrays and off-grid systems — the bank that decides how much of the day you actually keep.
Off-Grid Storage
Deep cycle batteries built to be cycled every single day.
- 10 YR WARRANTY
- 10 YR WARRANTYBLUETOOTH
- 10 YR WARRANTYBLUETOOTH
- 2 YR WARRANTY
- 2 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 1 YR WARRANTY
- 2 YR WARRANTY
- 2 YR WARRANTY
Panels Are the Easy Part
Generation Is Cheap; Storage Is the System
Panels only matter if the bank can hold what they make and give it back at night. Cycle depth and cycle life are the numbers that decide whether an off-grid system lasts two seasons or ten — which is exactly where LiFePO4 pulls away from lead-acid.
45 Years of Expertise
Dependable battery solutions since day one
Warranty-Backed
Coverage terms listed on every product page
US-Based Battery Experts
Talk fitment before you buy
Trusted by Professionals
Anglers, courses, fleets and dealers alike
Storage That Cycles Daily
Talk to a battery expertStorage by Chemistry
Lithium for daily cycling, flooded for lowest cost per amp hour.
- 10 YR WARRANTY
- 2 YR WARRANTY
- 2 YR WARRANTY
- 2 YR WARRANTY
- 2 YR WARRANTY
- 10 YR WARRANTY
- 10 YR WARRANTYBLUETOOTH
- 10 YR WARRANTYBLUETOOTH
Lithium vs. Lead-Acid
Why Pro-Guide customers make the switch.
| Specification | Lead-Acid (standard) | Pro-Guide LiFePO4 |
|---|---|---|
| Weight | ~65–70 lbs per battery | ~24–28 lbs per battery |
| Lifespan | 1–2 years typical | 10+ years |
| Charge time | 8+ hours | 2–3 hours |
| Maintenance | Regular watering and terminal checks | None |
| Warranty | 90 days – 1 year | 10-year limited + 36-month free replacement |
Compare Off-Grid Storage
Because our customers shop by the numbers.
| Model | Voltage | Capacity | Group Size | Best For | Price |
|---|---|---|---|---|---|
| 12V 300AH Group 8D LiFePO4 Deep Cycle Battery | 12 | 300AH | 8D | Largest single 12V bank we build | $1,499.99 |
| 6V 370AH Group L16 / 903 Flooded Deep Cycle Battery | 6 | 370 @ 20-Hr Rate | L16 / 903 | Highest capacity 6V bank cell | $463.95 |
| 12V 100AH Group 24 LiFePO4 Deep Cycle Battery | 12 | 100AH | 24 | Modular 12V building block | $699.99 |
Frequently Asked Questions
Choosing the Right Battery
How many amp hours do I actually need?
Add up the amp draw of everything the battery has to run, multiply by the hours you want between charges, and leave some headroom. If you would rather not do the math, our team will size it with you over the phone.
How deep should I cycle an off-grid bank every day?
Keep a flooded or AGM bank above roughly half its rated capacity if you want it to last. LiFePO4 tolerates far deeper daily cycling, which is why a lithium bank of the same nameplate capacity does considerably more real work.
What does LiFePO4 mean, and why does Pro-Guide use it?
LiFePO4 — lithium iron phosphate — is the most thermally stable lithium chemistry in common use. Compared with lead-acid it holds voltage under load far longer, weighs a fraction as much for the same usable capacity, and needs no watering or terminal maintenance.
Charging & Maintenance
Can I keep using my existing lead-acid charger?
A lead-acid charger can undercharge a lithium pack and shorten its life. Use a lithium-compatible charger — everything in our Lithium-Compatible collection is profiled for LiFePO4.
Does my charge controller need a lithium setting?
Yes. A controller set to a lead-acid profile will not fully charge a LiFePO4 bank and may hold it at the wrong absorption voltage. Set it to the lithium profile before commissioning.
Warranty & Support
What warranty comes with these batteries?
Terms vary by product line — the term for each battery is listed on its product page, and the full details are on our Warranty Information page. Register your battery online after purchase to activate coverage.
What if I am still not sure which one to buy?
Call our US-based battery team on 1-800-827-3232 before you order. Tell us the machine, the tray you are working with and how long you need to run between charges, and we will point you at the right part number, or message us.
Keep What the Panels Make
Size a storage bank to your daily generation and load.