Cold-Weather Starting Power
300 CCA for confident starts in cold temps and after storage.
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U1 BRS Super Battery for Tractors, Lawnmowers & More
U1 BRS Super Battery for Tractors, Lawnmowers & More
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.
