We don’t rush batteries out the door. We do five things so it works when you turn the key:

1. Fill with 1.265 SG electrolyte to spec.
2. Soak for full glass-mat absorption.
3. High-frequency forming charge (~900 mA) to form the plates.
4. Rest and verify it holds 12.6–12.8V.
5. Final QC. Ships ready to install.

Pro Tip: Our batteries can last 8–12 years when you keep them on a maintainer after you ride. Many riders enjoy years of reliable starts.

See all the details → View Our Super Charging Process Here.

• Cold starts: Strong cranking for winter mornings.
• Accessories: Handles lights, winches, GPS—keep it maintained.
• Vibration: AGM internals stay put on rough trails.
• Mounting: Mount upright or on its side. Don’t mount upside down.
• Storage: Sitting? Use the maintainer so it’s ready next ride.

Direct replacements: YTX9B-BS, BTX9B-BS, ATX9B-BS, DTX9B-BS, ETX9B-BS, WPX9B-BS, MS12-9B-BS, ES9B-BS, ET9B-BS, WP9B-4, PT9B-4, GT9B-4, YT9B-BS, CTX9B-BS, and more.

Need help? Contact us and we’ll make sure you get the right battery for your machine — our team rides and is here to help.

Battery: 30-Day Full Replacement — no proration, no hassle.

Charger (BRS612): 1-Year Manufacturer’s Warranty.

Smart maintainer/rejuvenator. Plug it in after you park. The eyelet adapter makes it easy—plug and go without removing the seat.

• Type: Automatic smart charger/maintainer/rejuvenator
• Input: 100–120 VAC · 50/60 Hz
• Output: 1000 mA @ 6V/12V
• Size/Weight: 105 × 68 × 35 mm · 0.5 kg
• Approvals: UL/cUL, FCC, CEC
• Includes: Eyelet Plug Adapter
• 3-stage charge, then maintenance; protections: short-circuit / reverse / overload
• Charger Warranty: 1-Year

Details: BRS612 product page

• Chemistry: Lead Acid AGM / VRLA (Pb)
• Nominal Voltage: 12V
• Capacity (Ah @10hr): 9Ah
• CCA: 140
• Dimensions: 5.87″ L × 2.80″ W × 4.12″ H (149.1 × 71.1 × 104.6 mm)
• Terminals: Type 11
• Weight: 7.83 lb (3.55 kg)
• Brand: BRS Battery Ltd. / BRS SuperBattery

Do I need to charge it before installing?

No. It ships charged and ready.

Why include a maintainer?

Machines sit. The maintainer keeps it topped up so it starts when you need it and helps it last years.

Where’s my model number?

On the face label (e.g., YTX9B-BS). This BRS9B-BS replaces that size.

How is this different from a cheap battery?

We soak, form, and test each one. No acid splash-and-dash. That’s why it cranks harder and holds a charge longer.

How cold will it work?

AGM runs in tough weather. Keep it charged and it handles winter starts well.