What battery does the Honda EU3000is use?

The Honda EU3000is typically uses a 12V 9Ah battery, often cross-referenced with the YTX9-BS part number. It is an AGM maintenance-free battery designed to fit the specific battery tray of the inverter.

How can I prevent my generator battery from dying during the winter?

The best way to maintain your Honda generator battery is to use a 12V float charger or Battery Tender. This keeps the battery at the ideal voltage while the generator is stored, preventing the lead plates from sulfating.

Honda Generator Batteries

Q: Which Honda generators require a battery?

Only Honda generators with an Electric Start feature require a battery. This includes the EU3000is, EU7000is, and many EM and EB series models. Recoil-start only models like the EU2200i do not use a battery.

Reliable Power for Your Honda Generator

Honda generators are legendary for their reliability, but even the best engine won't start without a healthy battery. Whether you are powering a remote job site with an EB series, backing up your home with an EM model, or enjoying the quiet performance of an EU3000is, Battery Mart provides the high-quality AGM (Absorbed Glass Mat) batteries you need to ensure an instant start every time.

Why Choose Battery Mart for Your Honda? Our replacement batteries are engineered to meet or exceed OEM specifications. We focus on providing:

Maintenance-Free AGM Technology: No more checking acid levels or worrying about leaks.
High Cranking Amps: Reliable starting power even in cold weather.
Vibration Resistance: Built to withstand the constant movement of a running generator.
Precision Fit: We match the exact dimensions and terminal configurations for a "drop-in" installation.

Not sure which battery your Honda needs? Check your model number against our compatibility list below or contact us for expert service.

Item #: YTX7L-BS |

YTX7L-BS AGM Maintenance Free Battery

Item #: YTX7L-BS

Voltage: 12 Volt / 6 Ah / 85 CCA

• AGM
• Dimensions: 4.5" / 2.81" / 5.19"
• Weight: 8.00 lbs
• Warranty: 1 Year Pro-rated

Price:
$49.95

Price: $49.95

Item #: YTX9-BS |

YTX9-BS AGM Maintenance Free Battery

Item #: YTX9-BS

Voltage: 12 Volt / 8 Ah / 120 CCA

• AGM
• Dimensions: 6.00" / 3.44" / 4.19"
• Weight: 7.00 lbs
• Warranty: 1 Year Pro-rated

Price:
$69.95

Price: $69.95

Item #: YTZ14S |

YTZ14S-BS AGM Maintenance Free Battery

Item #: YTZ14S

Voltage: 12 Volt / 12 Ah / 220 CCA

• AGM
• Dimensions: 5.84" / 3.43" / 4.31"
• Weight: 10.00 lbs
• Warranty: 1 Year Pro-rated

Price:
$69.95

Price: $69.95

Item #: YTZ10S |

YTZ10S-BS AGM Maintenance Free Battery

Backordered: Estimated Available August 20th, 2026

YTZ10S-BS AGM Maintenance Free Battery

Item #: YTZ10S | Backordered: Estimated Available August 20th, 2026

Voltage: 12 Volt / 8.6 Ah / 184 CCA

• AGM
• Dimensions: 5.91" / 3.35" / 3.7"
• Weight: 7.05 lbs
• Warranty: 1 Year Pro-rated

Reg. Price: $64.95

SALE Price: $59.95

You save: $5.00!

Item #: BM-MBTX7U |

Motobatt MBTX7U 12V 8Ah AGM Battery

Item #: BM-MBTX7U

Voltage: 12 Volt / 8 Ah / 115 CCA

• AGM
• Dimensions: 4.49" / 2.76" / 5.04"
• Weight: 7.00 lbs
• Warranty: 1 Year

Price:
$79.95

Price: $79.95

Item #: NLP5 |

NOCO NLP5 12V, 250A Lithium Powersport Battery

Item #: NLP5

Voltage: 12 Volt / 2 Ah / 250 Amps (Peak)

• LiFePO4
• Dimensions: 4.45" / 2.76" / 3.46"
• Weight: 4.57 lbs
• Warranty: 5 Year Limited

Price:
$79.95

Price: $79.95

Item #: BM-MBTX9U |

Motobatt MBTX9U 12 Volt 10.5 Ah AGM Battery

Item #: BM-MBTX9U

Voltage: 12 Volt / 10.5 Ah / 160 CCA

• AGM
• Dimensions: 5.94" / 3.43" / 4.13"
• Weight: 8.00 lbs
• Warranty: 1 Year
• See All Compatible Models

Price:
$84.95

Price: $84.95

Item #: ETX-9 |

USA-Made Big Crank™ ETX9 Battery

MADE IN USA

USA-Made Big Crank™ ETX9 Battery

Item #: ETX-9

Voltage: 12 Volt / 8 Ah / 120 CCA

• AGM
• Dimensions: 5.88" / 3.44" / 4.19"
• Weight: 7.00 lbs
• Warranty: 1 Year Free Replacement

Popular replacement for the Yuasa YTX9 and more, including the PTX-9 and FTZ9-BS.

Reg. Price: $99.95

SALE Price: $89.95

You save: $10.00!

Item #: SLA-12V35 |

12V 35Ah Sealed Lead Acid Battery (Group U1)

Item #: SLA-12V35

Voltage: 12 Volt / 35 Ah / 350 CCA

• AGM
• Dimensions: 7 3/4" / 5 1/8" / 6 3/8"
• Weight: 24.20 lbs
• Warranty: 1 Year
• See All Compatible Models

Price:
$114.95

Price: $114.95

Item #: BM-MBTZ10S |

Motobatt MBTZ10S 12V 8.6Ah AGM Battery

Item #: BM-MBTZ10S

Voltage: 12 Volt / 8.6 Ah / 165 CCA

• AGM
• Dimensions: 5.93" / 3.43" / 3.74"
• Weight: 8.00 lbs
• Warranty: 1 Year

Price:
$99.95

Price: $99.95

Item #: NLP9 |

NOCO NLP9 12V, 400A Lithium Powersport Battery

Item #: NLP9

Voltage: 12 Volt / 3 Ah / 400 Amps (Peak)

• LiFePO4
• Dimensions: 5.9" / 3.4" / 3.8"
• Weight: 4.57 lbs
• Warranty: 5 Year Limited

Price:
$99.95

Price: $99.95

Item #: YTX20HL-BS |

YTX20HL-BS AGM Maintenance Free Battery

MADE IN USA

YTX20HL-BS AGM Maintenance Free Battery

Item #: YTX20HL-BS

Voltage: 12 Volt / 18 Ah / 310 CCA

• AGM
• Dimensions: 6.88" / 3.44" / 6.19"
• Weight: 13.00 lbs
• Warranty: 1 Year Pro-rated

Price:
$118.95

Price: $118.95

Frequently Asked Questions: Honda Generator Batteries

Which Honda generators require a battery?

Only Honda generators equipped with an Electric Start feature require a battery. This includes popular models like the EU3000is, EU7000is, and most models in the EM and EB series. Smaller portable units like the EU1000i or EU2200i are recoil-start only and do not use a battery.

What is the most common battery for the Honda EU3000is?

The Honda EU3000is typically uses a 12V 8Ah or 9Ah battery. The industry-standard part number is often a YTX9-BS or equivalent. This battery is sized specifically to fit the compact internal battery compartment of the inverter unit.

How do I make my Honda generator battery last longer?

Generator batteries often fail because they sit idle for long periods. To extend your battery's life:

Use a Battery Tender: Connect a float charger during the off-season to prevent deep discharge.
Exercise the Generator: Run your generator once a month for 15–20 minutes to allow the internal charging circuit to top off the battery.
Clean the Terminals: Ensure the nut-and-bolt connections are tight and free of corrosion.

Does my battery come fully charged?

Most of our Honda replacement batteries are shipped factory-activated and fully charged. However, we always recommend testing the voltage or placing the battery on a charger for a short period before the first use to ensure it is at peak performance.