Polaris ACE EFI (150cc)
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 Polaris ACE EFI (150cc) chart references YTX9-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.
Battery sizes and specifications
YTX9-BS ↗
- Voltage
- 12 V
- Capacity
- 8 Ah
- Cold cranking
- 135 CCA
- Dimensions
- 150 × 87 × 105 mm
- Chemistry
- AGM lead-acid
- Terminals
- Positive left, negative right (as shown in manufacturer top-view layout); Yuasa type 5
Replacement battery research
| Type | Product | Amazon |
|---|---|---|
| AGMStock chemistry |  ExpertPower ExpertPower YTX9-BS 12V 9Ah ATV Battery ETX9-BS Replacement AGM, 180 CCA | View on Amazon ↗ |
| AGMStock chemistry |  Yuasa Yuasa YUAM329BS YTX9-BS Maintenance Free AGM Battery with Acid pack | View on Amazon ↗ |
| Gel lead-acid |  ExpertPower ExpertPower YTX9-BS GEL Battery 12V 9AH 180 CCA, Maintenance-Free, Rechargeable, Gel SLA, Motorcycle Battery Replacement for CTX9, PTR9-BS, YTR9-BS, YTX9, GTX9-12B, ES-TX9 & Powersport Applications | View on Amazon ↗ |
| Lithium |  Mighty Max Battery Mighty Max Battery YTX9-BS Lithium Battery Replacement for MGX9-BS Motorcycle | View on Amazon ↗ |
| Lithium (LiFePO4) |  TYKOOL TYKOOL YTX9-BS -STD LiFePO4 Lithium Motorcycle Battery,12.8V,4Ah,240CCA 2X Cranking Amps,5X longer life,for ATV,UTV (Polaris 150cc),BMW (310cc,650cc,1000cc),Honda,Kawasaki,Suzuki | View on Amazon ↗ |
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2021 Polaris ACE EFI (150cc) battery size
ACE EFI
Battery code: YTX9-BS.
- YTX9-BS: 150 × 87 × 105 mm (length × width × height); 12 V; 8 Ah; 135 CCA.
Compare AGM, Gel lead-acid, Lithium, and Lithium (LiFePO4) options for YTX9-BS. Select a product to shop on Amazon.
2020 Polaris ACE EFI (150cc) battery size
ACE EFI
Battery code: YTX9-BS.
- YTX9-BS: 150 × 87 × 105 mm (length × width × height); 12 V; 8 Ah; 135 CCA.
Compare AGM, Gel lead-acid, Lithium, and Lithium (LiFePO4) options for YTX9-BS. Select a product to shop on Amazon.
2017 Polaris ACE EFI (150cc) battery size
ACE EFI
Battery code: YTX9-BS.
- YTX9-BS: 150 × 87 × 105 mm (length × width × height); 12 V; 8 Ah; 135 CCA.
Compare AGM, Gel lead-acid, Lithium, and Lithium (LiFePO4) options for YTX9-BS. Select a product to shop on Amazon.
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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