PowerStar UT1222 925-04323 12V 2.2Ah Troy-Bilt 12AG836G266 12AJ836E011 Lawn Mower Battery

What It Is

The PowerStar UT1222 is a 12V, 2.2Ah sealed lead-acid (SLA) battery designed to replace the OEM Troy-Bilt 925-04323 battery. It powers the electric start system on select Troy-Bilt push mowers, including models like 12AG836G266 and 12AJ836E011.

Fitment & Compatibility

• Models: Fits Troy-Bilt models 12AG836G266, 12AJ836E011, and others using OEM battery 925-04323. Not for riders or zero-turns.
• Measurements: Approx. 5.9" L x 2.6" W x 4.0" H – match to your battery tray dimensions before buying.
• Terminals: Uses standard F1 (0.187") tab terminals. Ensure your mower’s wiring harness matches.
• Voltage/Ah: 12V, 2.2Ah. Do not substitute a higher Ah battery unless tray and charger are rated for it.
• OEM vs Aftermarket: This is a direct replacement aftermarket battery. Confirm your existing battery is 925-04323 or cross-reference with PowerStar’s compatibility list.

Key Things to Know

• Installation difficulty: Easy – disconnect old battery, connect red to positive (+), black to negative (-). No tools beyond a small wrench or screwdriver.
• Charging: Use a 12V SLA charger (1A or less). Your mower’s alternator may not fully charge a deeply discharged battery – occasional external charging extends life.
• Quality notes: 3.5/5 stars from only 2 reviews. SLA batteries are reliable but can lose capacity if stored discharged. Check manufacture date – older stock may underperform.
• Common gotcha: If your mower has a charging circuit, verify it’s working. A dead battery may mean a bad alternator, not a bad battery.

Should You Buy It

At $38.36, this is a budget-friendly drop-in replacement for Troy-Bilt mowers using the 925-04323 battery. It’s fine if you need a quick fix and don’t want to pay OEM prices, but the low review count and generic SLA design mean you’re getting basic performance. Better for occasional use or backup than daily heavy starting. If reliability is critical, consider a known brand like Mighty Max or Yuasa.