Reliable Power When You Need It Most
Choosing the right backup power battery matters for every power outage, storm, or standby system. Our DC AGM batteries power home battery backup systems, UPS installations, sump pumps, telecom cabinets, and emergency and security lighting. With sealed, maintenance-free construction and thick pure-lead plates built for years of float service, Fullriver keeps your backup power ready when the grid fails.
At Fullriver, we offer a wide range of high-quality Backup Power Batteries.
DC Series
DC Series batteries are made of thick plates built with pure virgin lead for unrivaled deep cycle performance. These fast-charging batteries can be mounted horizontally and vertically and no maintenance is required. The DC series are ultra-durable for long-lasting deep cycling power in demanding conditions.
Reliable Battery Features
Our AGM backup power batteries are built for years of float service and instant discharge when the grid fails. Common applications include home backup systems, UPS installations, sump pump backups, garage door and gate opener backups, and emergency lighting in commercial spaces. Key Features:
- Long float service life from pure-lead plates and high-valve construction, holding a full charge for years of standby battery readiness
- Sealed, maintenance-free construction with zero watering, corrosion, or negative plate buildup
- Safe indoor use with no hydrogen gas venting, spillable electrolyte, or ventilation requirements
- Deep-cycle strength and low internal resistance for fast recharge after any power outage
- AGM sizes covering small 12V UPS batteries, alarm and security system backups, sump pump systems, and whole-home battery backup installations
Why Choose Fullriver Battery?
Fullriver has been building AGM and deep-cycle batteries since 1995, with battery lines purpose-built for the demands of standby and backup power. The EGL Series uses pure-lead plates for years of float service in UPS strings and telecom cabinets. The DC Series covers deep-cycle needs for sump pump backups, home battery banks, and off-grid installations. Full Force adds a value AGM option for cost-focused backup builds. Every battery ships with full CCA, Ah, and float life specs published on the datasheet, and Fullriver's US distribution network gets replacements to you fast when uptime matters. Use our Dealer Locator or Battery Finder to find the right fit.
FAQs
What is a backup power battery?
A backup power battery provides temporary electricity when primary power fails. Applications include uninterruptible power supply (UPS) systems, sump pump battery backups, emergency lighting fixtures, exit signs, indicator lights, alarm and security systems, garage door and gate opener backups, elevator backup, telecom equipment, and whole-home battery backup installations. Most are sealed lead-acid or AGM batteries built to sit in float service for years and discharge on demand when the grid goes down.Are AGM batteries good for backup power?
Yes. AGM batteries are the standard choice for most backup power applications. The sealed, maintenance-free design allows safe installation indoors, in server rooms, mechanical closets, and home basements without ventilation requirements or acid spill concerns. AGM holds a charge during long float service, delivers strong discharge current during a backup event, and recharges faster than a flooded lead-acid battery once utility power returns.How long do backup power batteries last?
Backup power battery life depends on operating temperature, depth of discharge during outage events, and float voltage from the charger. Fullriver AGM backup power batteries deliver years of float service under proper conditions. Cycle life and float life vary by product line, and individual battery spec sheets list the rated life for each model.What size battery do I need for my sump pump backup?
Most residential sump pump battery backup systems use a 12V AGM battery in the 75Ah to 100Ah range. A 12V sump pump battery of that size typically runs a sump pump for several hours during a power outage. Runtime depends on pump cycling, wattage draw, and depth of discharge. For heavier sump pump systems or longer power failure protection, larger deep-cycle batteries or a parallel battery bank fits better.Can a battery backup power household appliances during a power outage?
Yes, but runtime depends on battery capacity and how much power the appliances draw. A single 12V 100Ah AGM battery can run a refrigerator, some lights, and small electronics for several hours during a power outage. For longer runtime or larger loads, multiple batteries wired in parallel or a whole-home battery backup system paired with an inverter can carry higher wattage appliances through extended power failures. Match the battery bank size to the total watt-hours you need to cover.What are the code requirements for emergency lighting backup batteries?
The National Fire Protection Association (NFPA) Life Safety Code requires emergency lighting systems in commercial spaces to provide at least 90 minutes of illumination during a power outage. Emergency lighting fixtures, exit signs, and their backup batteries must pass a monthly test procedure of 30 seconds and an annual test procedure of the full 90 minutes to confirm proper emergency operation. AGM backup batteries fit these code requirements because they hold a full charge during float service and deliver constant power the moment primary power drops out. Many emergency lighting fixtures use a small battery charger system built into the fixture that keeps the battery ready for the next power emergency.Can AGM backup batteries be installed indoors?
Yes. AGM batteries are sealed valve-regulated lead-acid (VRLA) units, so they do not vent hydrogen gas under normal float charging and have no free electrolyte to spill. AGM is safe to install in server rooms, telecom cabinets, mechanical closets, home basements, and other indoor spaces without dedicated ventilation. Always follow manufacturer guidelines and local codes.
We have nothing but praise for this product.
Being a local distributor for this great brand for over a decade, we have nothing but praise for this product. Under the Fullriver umbrella line of batteries (EGL, DC, Full Throttle), the quality of support from Fullriver's team is unparalleled and lines up with our values. We are happy to stock such a premium product that gives our customers peace of mind.
