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Cold-Weather Starting Power
300 CCA for confident starts in cold temps and after storage.
U1 BRS Super Battery for Tractors, Lawnmowers & More
$139.99
- Real human support before and after you order
- Trusted battery experts since 2003
- Local dealer network support
- 30-day money-back guarantee
Ships next business day 🇨🇦
FREE Shipping to Canada & USA
30-Day Money Back Guarantee
That's how confident we are in your results. But if you're not thrilled, let us know and we'll refund your purchase.
BRS Super-Charged U1 AGM Battery
12 V • 375 CA @ 0 °C • 300 CCA — Ready-to-run power for mowers, tractors, generators & UTVs.
FREE Fast Shipping 1-Year Full Replacement Warranty 30-Day Money Back Guarantee
Quick Specs
- Voltage: 12 V
- Cranking Amps (CA @ 0 °C): 375
- Cold-Cranking Amps (CCA): 300
- Chemistry: Sealed AGM (Pb)
- Orientation: Any position except upside-down
- Maintenance: None (sealed, no top-ups)
- Dimensions (L×W×H): 7.8″ × 5.1″ × 7.2″ (197 × 130 × 184 mm)
- Weight: 14.5 lb (6.58 kg)
- Form Factor: U1 (see U1 vs U1R polarity note) - This is a Standard U1
Why You’ll Love It
- Instant cranking confidence — 300 CCA fires up small engines after long off-season storage.
- Sealed AGM = zero spills — no acid mess, no maintenance.
- Holds charge up to 3× longer than conventional flooded batteries.
- Built for bumps & vibration — perfect for rough yards and trails.
- Arrives 100% charged — tested & inspected in-house; install and go.
Want Reliable Starts, Season After Season? Learn more
Messy installs & weak starts, solved.
Every U1 leaves our shop fully charged, load-tested, and quality-checked. Unbox, drop in, and mow—no trickle charger, no acid to add, no waiting.
What Makes This Battery Different Learn more
Sealed AGM, Zero Spills
Leak-proof and maintenance-free—no water top-ups, no acid cleanup.
Longer Shelf Life
Low self-discharge with anti-sulfation additives & lead-calcium grids—holds charge up to 3× longer.
Built for Vibration
AGM construction resists shock & vibration common in ride-ons and UTVs.
Features That Earn Their Keep Learn more
Arrives Ready-to-Run
Pre-charged, tested & inspected—install and get to work Day-1.
Standard U1 Form Factor
Common GR-U1 tray fit for Cub Cadet, John Deere, Husqvarna, MTD, Toro & more.
Low Self-Discharge
Stays ready longer during off-season with AGM chemistry.
Seasonal Care
Use an AGM-safe smart maintainer for long storage. View the BRS Super Charger Maintainer.
How to Confirm Fitment Learn more
3 Quick Checks
- Measure your tray (L×W×H) and compare to 7.8″ × 5.1″ × 7.2″.
- Confirm terminal polarity (U1 vs U1R reversed).
- Check hold-down/strap clearance above 7.2″ / 184 mm.
U1 vs U1R: U1 typically has positive on the left when terminals face you; U1R is reversed. Match your cable reach.
Need help? Use chat and we’ll confirm fitment in minutes.
What’s Inside the Box? Learn more
You’ll Receive
- BRS Super-Charged U1 AGM Battery
- Terminal hardware (square-nut + bolt)
Full Technical Specs Learn more
- Voltage: 12 V
- Cranking Amps (CA @ 0 °C): 375
- Cold-Cranking Amps (CCA): 300
- Chemistry: Sealed AGM (Pb)
- Orientation: Any position except upside-down
- Maintenance: None required (sealed)
- Dimensions (L×W×H): 7.8″ × 5.1″ × 7.2″ (197 × 130 × 184 mm)
- Weight: 14.5 lb (6.58 kg)
- Terminal Hardware: Standard 6 mm square-nut style; fits common mower/UTV ring terminals
Guarantee Learn more
30-Day Money Back • 1-Year Full Replacement • FREE Fast Shipping
If your U1 Super Battery doesn’t perform within 12 months, we’ll replace it—free. No prorated credits, no hidden fees, no hassle.
🎁 Free Bonuses (Included) View
Delivered via email after purchase. Yours to keep.
Fortify Your Home
Top plants & layout tips that naturally deter intruders.
Lead in a Crisis
Emergency playbooks and family safety protocols.
Pack & Prepare
Bug-out bag blueprint & checklists.
- Instant digital delivery after purchase
- Works on any device (PDF/guide formats)
- No extra cost—yours to keep
*Bonuses delivered digitally. No additional purchase required.
U1 Super Battery — FAQ
Will this fit my mower, tractor, or UTV?Learn more
If your machine uses a GR-U1 tray, this is a quick fit. Confirm the tray size matches 7.8″ × 5.1″ × 7.2″ and check hold-down clearance above 7.2″ (184 mm).
U1 vs U1R — which do I need?Learn more
Facing the posts, a standard U1 typically has positive on the left; U1R is reversed. Match your cable reach and post orientation before ordering. This Battery Is Standard U1 Battery
Do I need to charge it before first use?Learn more
No. Every unit leaves our shop 100% charged, load-tested, and inspected. Install and go.
What charger should I use for storage?Learn more
Use an AGM-safe smart maintainer with automatic float mode. For long off-season storage, connect monthly or leave on a maintainer.
Recommended: BRS Super Charger Maintainer.
Can I mount it on its side?Learn more
Yes—AGM is sealed and can be installed in any orientation except upside-down. Always secure the battery to minimize vibration.
What’s the warranty & return policy?Learn more
1-Year Full Replacement—no proration. Plus 30-Day Money-Back if it doesn’t outperform your old battery.
How does AGM compare to flooded batteries?Learn more
AGM delivers stable cold-cranking power, zero-maintenance operation, strong vibration resistance, and lower self-discharge for longer shelf life—no spills, no top-ups.
MJP
Ordered a battery for a snowmobile and a fuel transfer pump. Both items arrived in record time (ordered on a Saturday, arrived on Tuesday). I am extremely happy with both products. Battery has tons of cranking amps and fuel transfer pump with shut off sensor works fantastic. I would highly recommend both products and will making more purchases from BRS Battery in the future.
U1 BRS Super Battery for Tractors, Lawnmowers & More
Impressed from the start
Very happy with service and battery The shipping and delivery response was amazing keep up the great work!
Exactly as promised
The team at BRS answered the questions I had prior to the purchase, ordering was quick and easy, received a confirmation minutes after purchasing( it was hilarious Andy) so coupled with the quick delivery, it was an enjoyable experience.
Performing great.
So far this battery is performing great. My 10 year old H-D AGM battery was giving me trouble, would not hold charge for more than a couple of days, then it would not start the bike. Since installing this battery a couple of weeks ago, I have not had to plug the trickler in and the bike turns over like a champ and starts every time. I bought the BRS smart trickle charger with this battery and will use it on the off season. We’ll see how it does long term next spring. I’m not too worried though, battery has a two year warranty.
Big thanks to the whole crew
So again I went with BRS as my new ATV Battery because the one I bought for my side by side worked so well why not deal with local. The battery comes pre-charged ready for install not like them other batteries.
Pleasant experience from the start!
Read some good reviews online regarding the batteries and found exactly what I was looking for. Shipping was prompt and communication was great. Box was packed perfectly and well protected. The owner even emailed and thanked me for my order! I will definitely be returning and will be telling others about BRS!
Order received on time.
Order received on time. This is the third time I used BRS EXCELLENT service. Will recommend this it to all my friends.
Stayed in touch with me
highly recommend BRS Battery. The company stayed in touch with me during the purchase process and during delivery. The battery was received quicker than I thought. It was fully charged and I installed it right after delivery.
Excellent product
Excellent product, quick delivery. With the recent ice storm I had to fuel a generator for 10 Days. This fuel pump made it so much easier. No lifting, no spilling!
100% recommend this company.
100% recommend this company. I had an issue with the unit I ordered, sent an email on a Saturday not expecting to hear a response till the following week. Was totally PLEASED & SURPRISED to receive a response that evening, stating a new unit would be shipped (at no expense to me) Monday
Join The BRS Family
Arrives Fully Charged - Ready To Rock + Roll!
Stop Replacing Weak Batteries Every Year or Two
The BRS Supercharging Process Starts Before Your Battery Ships. Most cheap replacement batteries are pulled from a shelf and shipped. BRS Super Batteries go through a preparation process designed to help deliver stronger starts, better reliability, and longer battery life with proper maintenance.
Precision Fill + Deep Soak
We do not rush activation. Each applicable BRS Super Battery is filled properly and given time to absorb before charging begins.
Super Charged Plate Forming
Our charging process helps activate the internal plates and prepare the battery for real-world use.
Voltage-Tested Before Shipping
Every battery must pass testing before it leaves our shop.
Precision Fill + Deep Soak
We do not rush activation. Each applicable BRS Super Battery is filled properly and given time to absorb before charging begins.
Super Charged Plate Forming
Our charging process helps activate the internal plates and prepare the battery for real-world use.
Voltage-Tested Before Shipping
Every battery must pass testing before it leaves our shop.
Supercharged AGM Power Built for Stronger Starts
Cheap replacement batteries may look similar on the outside. The difference shows up when your machine has been sitting, the temperature drops, or you need fast cranking power right now.
Supercharged AGM Power Built for Stronger Starts
Cheap replacement batteries may look similar on the outside. The difference shows up when your machine has been sitting, the temperature drops, or you need fast cranking power right now.
High-Performance AGM Design
Sealed AGM construction helps deliver dependable starting power with no water top-ups, no acid spills, and less maintenance.
Stronger Cranking Power
Built to help your ATV, motorcycle, snowmobile, UTV, or powersport machine fire up with confidence when you turn the key.
Built for Vibration & Rough Riding
Powersport machines take a beating. BRS Super Batteries are made for real-world riding, storage, vibration, and seasonal use.
Prepared Before Shipping
Every BRS Super Battery is charged, checked, and tested before it leaves our shop — so you are not stuck installing a weak shelf battery.
Super Charged. Tested Ready To Ride
Most batteries are rushed, fast-charged, and shipped before they’re truly ready. BRS takes a different approach. Every Super Battery is professionally prepared, super charged, and tested before it leaves our shop.
Super Charged. Tested Ready To Ride
Most batteries are rushed, fast-charged, and shipped before they’re truly ready. BRS takes a different approach. Every Super Battery is professionally prepared, super charged, and tested before it leaves our shop.
8–12 Years
Possible lifespan with proper care
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Holds charge longer than conventional batteries
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Years of battery expertise since 2003
*Built for riders who are tired of weak starts, short battery life, and replacing the same battery every season.
The Secret to Longer Battery Life Keep It Charged. Keep It Ready.
Most powersport batteries do not fail because you ride too much.
They fail because the machine sits too long without proper maintenance. A BRS Super Battery gives you the starting power — the BRS Super Charger helps protect it while your machine is parked.
Why Batteries Don’t Last
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The #1 reason batteries don't last is due to lack of charge.
Most battery problems start while the machine is sitting.
When an ATV, motorcycle, snowmobile, or lawn tractor sits for weeks or months, the battery slowly loses charge. If it drops too low, sulfation can build up inside the battery and make it harder to recover.
That is why cheap batteries often feel fine at first, then get weak after storage.
The fix: start with a properly prepared battery and keep it maintained when the machine is not being used.
How To Make Your Battery Last Longer
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The best way to extend battery life is simple:
Keep it charged before it gets weak.A smart maintainer like the BRS Super Charger monitors the battery and helps keep it topped up without overcharging. That means your battery is not sitting half-dead all winter, all summer, or between rides.
For best results, connect your battery to a maintainer whenever your machine sits for long periods.
Why Full Discharge Kills Batteries
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Letting a battery fully discharge is one of the fastest ways to shorten its life.
Once a battery drops too low, it may not hold charge properly again. Even if you boost it back to life, the damage may already be done.
That is why waiting until the battery is dead is the expensive way to maintain it.
A maintainer helps prevent that problem before it starts.
Why BRS Batteries Are Prepared Differently
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BRS Super Batteries are not just pulled from a shelf and shipped.
Each applicable battery goes through a preparation process designed to support stronger starts and better real-world performance. That includes proper activation, charging, and testing before it leaves our shop.
You get a battery that has been prepared with care — not a weak shelf battery that may already be sitting undercharged.
Do I Really Need a Battery Maintainer?
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For seasonal equipment, yes — it is one of the smartest things you can add.
If your machine sits for weeks or months at a time, a maintainer helps protect your battery from slow discharge, sulfation, and weak-start frustration.
The battery gets your machine running.
The maintainer helps keep it ready.
The Smartest Battery Setup
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The best setup is simple:
BRS Super Battery + BRS Super Charger
That gives you strong starting power now, plus maintenance support during storage.
It is the difference between hoping your machine starts next season and knowing you did the right thing to keep the battery ready.
Real Performance Verified by Real Riders
One verified customer tested their BRS Super Battery and recorded 109% of rated CCA on a Snap-on battery tester — a strong sign of the kind of cranking power riders want when it’s time to start.
Cheap batteries can look fine online and still leave you with weak starts when your machine has been sitting or the weather turns cold.
BRS Super Batteries are built for riders who want more confidence at startup — and real-world customer proof helps show the difference.
✓ Verified customer review with real test result
✓ 109% of rated CCA shown in customer-submitted test
✓ Helps support stronger starts when your machine needs cranking power
✓ Prepared, charged, and tested before shipping
✓ Built for riders tired of weak replacement batteries
Why Riders Choose BRS Battery
Discover how our advanced super charger technology outperforms the competition with superior power, lifespan, and reliability.
Why Riders Choose BRS Battery
Discover how our advanced super charger technology outperforms the competition with superior power, lifespan, and reliability.
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BRS Super Battery
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Standard Batteries
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AGM
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Arrives Fully Charged
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Super Charged Technology
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Inspected & Voltage Check Before Shipping
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Full Replacement Warranty w/ No Proration
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After Purchase Support via Phone, Chat, or Email
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A Real Battery Store. Not Just Another Online Listing.
A Real Battery Store. Not Just Another Online Listing.
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We've been keeping you powered for 20+ years
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Days Money Back Guarantee
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Local Dealers
When you buy from BRS, you are not guessing with a faceless online seller. You are buying from a real battery and power products team that wants you to get the right product the first time.
Frequently Asked Questions
Is BRS Battery a real store?
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Yes. BRS Battery is a real battery and power products business with a physical location, real inventory, and real people behind every order. We have been helping customers choose better batteries, chargers, fuel pumps, and power products since 2003.
Can I get help before I order?
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Yes. If you are not sure if a product is right for your equipment, contact our team before ordering. We would rather help you choose the right product upfront than have you waste time and money on the wrong one.
How do I know if this product is right for me?
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Start by checking the product details, specs, size, compatibility notes, and photos on the page. If you are still unsure, reach out to BRS support and we can help point you in the right direction.
When will my order ship?
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Most orders are processed as quickly as possible during regular business days. Shipping options, costs, and estimated delivery times are shown at checkout before you complete your order.
What if there is a problem with my order?
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Contact BRS support and we will help review the issue. Whether you have a question about fitment, shipping, damage, or product use, our team is here to help before and after your order.
Do BRS products come with a warranty?
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Many BRS products include warranty protection, but coverage can vary by product. Check the warranty details on the specific product page or contact us before ordering if you need clarification.
Can I buy BRS products from a local dealer?
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BRS products are available through select dealers where supported. If you prefer local support, contact us and we can let you know what options may be available in your area.
Why should I buy from BRS instead of someone else?
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When you buy from BRS, you are buying from a battery and power products team that has been serving customers since 2003. You get real support, practical product knowledge, and help from people who understand batteries, chargers, fuel pumps, and equipment — not just another faceless online listing.
