Yamaha YFM25B Big Bear (250cc)
battery guide.
Battery fitment can depend on year, trim and model code. Match the configuration in the chart to your ATV before choosing a replacement.
Battery applications for the configurations listed below.
Confirm the year. Check the trim.
The Yamaha YFM25B Big Bear (250cc) chart references YB14A-A2 and YTX14AH-BS.These configurations are listed in an identified manufacturer application source.Match the year and configuration, then check the physical installation.
Jump to your year
Battery fitment by year
Each row covers only the configuration shown. Other trims and missing years are not established by this chart.
| Year | Model / trim | Battery |
|---|---|---|
| 2009 | YFM25B Big Bear (250cc) / YFM25B Big Bear | YB14A-A2 / YTX14AH-BS |
| 2008 | YFM25B Big Bear (250cc) / YFM25B Big Bear | YB14A-A2 / YTX14AH-BS |
| 2007 | YFM25B Big Bear (250cc) / YFM25B Big Bear | YB14A-A2 / YTX14AH-BS |
Battery sizes and specifications
YB14A-A2 ↗
- Voltage
- 12 V
- Capacity
- 14 Ah
- Cold cranking
- 175 A (EN)
- Dimensions
- 134 × 89 × 176 mm
- Chemistry
- Flooded lead-acid
- Terminals
- Positive left, negative right (as shown in manufacturer top-view layout); Yuasa type 8
YTX14AH-BS ↗
- Voltage
- 12 V
- Capacity
- 12 Ah
- Cold cranking
- 210 CCA
- Dimensions
- 134 × 89 × 166 mm
- Chemistry
- AGM lead-acid
- Terminals
- Positive left, negative right (as shown in manufacturer top-view layout); Yuasa type 4
Replacement battery research
| Type | Product | Amazon |
|---|---|---|
| Conventional flooded lead-acidStock chemistry |  Yuasa Yuasa YUAM2214A YB14A-A2 Battery | View on Amazon ↗ |
| AGM |  Motobatt MotoBatt MBTX14AU (12V 16.5 Amp) 190CCA Factory Activated QuadFlex AGM Battery | View on Amazon ↗ |
| Lithium (LiFePO4) |  Antigravity Antigravity ATX-12-AH YTX14AH YTX14AH-BS YTX14AHL Motorcycle Battery | View on Amazon ↗ |
As an Amazon Associate, we earn from qualifying purchases. How affiliate links work.
| Type | Product | Amazon |
|---|---|---|
| AGMStock chemistry |  Mighty Max Battery Mighty Max Battery YTX14AH-BS - 12 Volt 12 AH, 210 CCA, Rechargeable Maintenance Free SLA AGM Motorcycle Battery | View on Amazon ↗ |
| AGMStock chemistry |  Yuasa Yuasa YUAM62H4A YTX14AH-BS Maintenance Free H Series AGM Battery with Acid pack | View on Amazon ↗ |
| Gel lead-acid |  Mighty Max Battery Mighty Max Battery YTX14AH-BS Gel 12V 12Ah Battery for Polaris 500 All Models 1999-2012 | View on Amazon ↗ |
| Lithium (LiFePO4) | Antigravity Antigravity ATX-12-AH YTX14AH YTX14AH-BS YTX14AHL Motorcycle Battery | View on Amazon ↗ |
| Lithium (LiFePO4) |  Mighty Max Battery Mighty Max Battery YTX14AH-BS LIFEPO4-12 Volt 12 AH, 400 CCA, Lithium Iron Phosphate (LiFePO4) Battery | View on Amazon ↗ |
| Lithium (LiFePO4) | ![TYKOOL LFP14AH-BS-PRO Lithium Battery, Replaces YTX14AH YTX14AH-BS, 480CCA 8Ah Fits for ATV UTV Motorcycle, Compatible with Polaris Sportsman 570 Ranger 500 Kawasaki Mule SX, Digital Readout [+ -]](https://m.media-amazon.com/images/I/913VjTXlbzL._AC_SY300_SX300_QL70_FMwebp_.jpg) TYKOOL TYKOOL LFP14AH-BS-PRO Lithium Battery, Replaces YTX14AH YTX14AH-BS, 480CCA 8Ah Fits for ATV UTV Motorcycle, Compatible with Polaris Sportsman 570 Ranger 500 Kawasaki Mule SX, Digital Readout [+ -] | View on Amazon ↗ |
As an Amazon Associate, we earn from qualifying purchases. How affiliate links work.
2009 Yamaha YFM25B Big Bear (250cc) battery size
YFM25B Big Bear
Battery options: YB14A-A2 / YTX14AH-BS.
- YB14A-A2: 134 × 89 × 176 mm (length × width × height); 12 V; 14 Ah; 175 A (EN).
- YTX14AH-BS: 134 × 89 × 166 mm (length × width × height); 12 V; 12 Ah; 210 CCA.
Compare Conventional flooded lead-acid, AGM, Lithium (LiFePO4), and Gel lead-acid options for YB14A-A2 and YTX14AH-BS. Select a product to shop on Amazon.
YuasaYB14A-A2 · Conventional flooded lead-acidShop now ↗MotobattYB14A-A2 · AGMShop now ↗AntigravityYB14A-A2 / YTX14AH-BS · Lithium (LiFePO4)Shop now ↗Mighty Max BatteryYTX14AH-BS · AGMShop now ↗YuasaYTX14AH-BS · AGMShop now ↗Mighty Max BatteryYTX14AH-BS · Gel lead-acidShop now ↗Mighty Max BatteryYTX14AH-BS · Lithium (LiFePO4)Shop now ↗TYKOOLYTX14AH-BS · Lithium (LiFePO4)Shop now ↗2008 Yamaha YFM25B Big Bear (250cc) battery size
YFM25B Big Bear
Battery options: YB14A-A2 / YTX14AH-BS.
- YB14A-A2: 134 × 89 × 176 mm (length × width × height); 12 V; 14 Ah; 175 A (EN).
- YTX14AH-BS: 134 × 89 × 166 mm (length × width × height); 12 V; 12 Ah; 210 CCA.
Compare Conventional flooded lead-acid, AGM, Lithium (LiFePO4), and Gel lead-acid options for YB14A-A2 and YTX14AH-BS. Select a product to shop on Amazon.
YuasaYB14A-A2 · Conventional flooded lead-acidShop now ↗MotobattYB14A-A2 · AGMShop now ↗AntigravityYB14A-A2 / YTX14AH-BS · Lithium (LiFePO4)Shop now ↗Mighty Max BatteryYTX14AH-BS · AGMShop now ↗YuasaYTX14AH-BS · AGMShop now ↗Mighty Max BatteryYTX14AH-BS · Gel lead-acidShop now ↗Mighty Max BatteryYTX14AH-BS · Lithium (LiFePO4)Shop now ↗TYKOOLYTX14AH-BS · Lithium (LiFePO4)Shop now ↗2007 Yamaha YFM25B Big Bear (250cc) battery size
YFM25B Big Bear
Battery options: YB14A-A2 / YTX14AH-BS.
- YB14A-A2: 134 × 89 × 176 mm (length × width × height); 12 V; 14 Ah; 175 A (EN).
- YTX14AH-BS: 134 × 89 × 166 mm (length × width × height); 12 V; 12 Ah; 210 CCA.
Compare Conventional flooded lead-acid, AGM, Lithium (LiFePO4), and Gel lead-acid options for YB14A-A2 and YTX14AH-BS. Select a product to shop on Amazon.
YuasaYB14A-A2 · Conventional flooded lead-acidShop now ↗MotobattYB14A-A2 · AGMShop now ↗AntigravityYB14A-A2 / YTX14AH-BS · Lithium (LiFePO4)Shop now ↗Mighty Max BatteryYTX14AH-BS · AGMShop now ↗YuasaYTX14AH-BS · AGMShop now ↗Mighty Max BatteryYTX14AH-BS · Gel lead-acidShop now ↗Mighty Max BatteryYTX14AH-BS · Lithium (LiFePO4)Shop now ↗TYKOOLYTX14AH-BS · Lithium (LiFePO4)Shop now ↗Fitment details
The chart lists battery options by year and configuration. Match the complete model and trim shown in the table.
How to confirm your battery
- Match your manufacturer, full model code, year and trim to an OEM manual.
- Compare the existing battery label with the manufacturer-approved battery code.
- Measure length, width and height, including clearance for covers and straps.
- Confirm positive and negative terminal positions, terminal type and cable reach.
- Check the required electrical specification and charging instructions.
Changing battery chemistry?
Check the battery manufacturer's application and charging guidance before moving between lead-acid and lithium. Vehicle charging compatibility, mounting and cold-weather requirements depend on the specific product. Read our AGM and lithium checklist.
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