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Genuine Shimano EC-E8004-2 42V 4A STEPS Fast Charger for compatible Shimano 36V lithium-ion eBike battery systems.

The EC-E8004-2 is Shimano's high-output North American charger and can serve as a replacement charger, second charger, or a substantial fast-charging upgrade from the slower EC-E6002 on compatible Shimano batteries.

This is a genuine Shimano charger.

Important: A Shimano motor does not automatically mean your bike uses a Shimano battery or this charging system. Compatibility must be verified by battery model and charging architecture before ordering.

Why Upgrade to the EC-E8004?

Many compatible Shimano batteries can be charged with either the slower EC-E6002 or the higher-output EC-E8004. Shimano's published charging data shows significantly shorter charging times when the EC-E8004 is used with supported batteries.

This makes the EC-E8004 an excellent option if you:

• Need to replace a lost, damaged, or failed Shimano charger
• Want a second charger for home, work, travel, or another location
• Currently use an EC-E6002 and want faster charging on a compatible battery
• Want Shimano's genuine 4A fast-charging solution for a supported Shimano battery system

Shimano EC-E8004-2 Specifications

• Manufacturer: Shimano
• Model: EC-E8004-2
• Product family: Shimano STEPS
• Product type: Genuine Shimano fast eBike battery charger
• Battery architecture: Compatible Shimano 36V lithium-ion batteries
• Output voltage: 42V DC
• Maximum output current: 4A
• North American version: USA / Canada
• AC plug: Type A
• Typical North American input: 120V AC, 50/60Hz
• Shimano-listed input range: 100-240V AC, 50/60Hz
• Certification listed by Shimano: UL1012
• Charging method: Plug-in charging
• Error signal: Yes
• Charging temperature: 0 to 40°C / 32 to 104°F
• Storage temperature: -20 to 60°C / -4 to 140°F
• Color: Black
• Built-in AC cable: Yes
• AC cable length: Approximately 2 meters

Published Physical Specifications

• Length: 162 mm / approximately 6.38 in
• Width: 73 mm / approximately 2.87 in
• Height: 44 mm / approximately 1.73 in
• Published target weight: Approximately 550 g / 1.21 lb

Dimensions and weight are Shimano-published specifications for the EC-E8004 family and should be considered reference specifications.

North American EC-E8004-2 Charging Times

Shimano's current model-specific North American EC-E8004-2 information lists approximately the following charging times:

• 418Wh battery: approximately 2.5 hours to 80% / 3.5 hours to full
• 504Wh battery: approximately 3.2 hours to 80% / 4.5 hours to full
• 630Wh battery: approximately 4.0 hours to 80% / 5.7 hours to full

Actual charging time can vary with battery model, battery condition, state of charge, temperature, supply conditions, and normal battery-management behavior.

EC-E6002 to EC-E8004 Fast-Charger Upgrade

One of the biggest advantages of the EC-E8004 is its ability to substantially reduce charging time on Shimano batteries that Shimano approves for use with both the EC-E6002 and EC-E8004.

Shimano publishes the following broader EC-E6002 versus EC-E8004 charging-time comparison:

418Wh Battery Class

• EC-E6002 to 80%: approximately 3.5 hours
• EC-E8004 to 80%: approximately 2.0 hours
• EC-E6002 full charge: approximately 6.5 hours
• EC-E8004 full charge: approximately 3.0 hours
• Potential full-charge time savings: approximately 3.5 hours

504Wh Battery Class

• EC-E6002 to 80%: approximately 4.0 hours
• EC-E8004 to 80%: approximately 2.5 hours
• EC-E6002 full charge: approximately 7.5 hours
• EC-E8004 full charge: approximately 4.0 hours
• Potential full-charge time savings: approximately 3.5 hours

630Wh Battery Class

• EC-E6002 to 80%: approximately 7.5 hours
• EC-E8004 to 80%: approximately 3.2 hours
• EC-E6002 full charge: approximately 10.2 hours
• EC-E8004 full charge: approximately 4.8 hours
• Potential full-charge time savings: approximately 5.4 hours

Important: These comparison figures come from Shimano's broader EC-E8004 comparison data. Shimano's current North American EC-E8004-2 model-specific charging times are listed separately above. Supply conditions and regional specifications can affect Shimano's published charging-time figures.

Verified Shimano Battery Compatibility

Shimano's battery and charger compatibility documentation identifies EC-E8004 compatibility across numerous genuine Shimano battery families.

BT-EN400 Battery Family

• BT-EN404-A
• BT-EN405-A

Associated charging components can include BM-EN400 and SM-BTE60 where applicable.

BT-EN600 Battery Family

• BT-EN604-A
• BT-EN605-A
• BT-EN606-A

Associated battery architecture can include BM-EN600.

BT-EN800 Battery Family

• BT-EN805-A
• BT-EN805-L-A
• BT-EN806-A

Associated charging components can include BM-EN800-A, BM-EN801-A, EW-CP100, and SM-BTE80 depending on the bicycle and battery installation.

BT-E6000 Battery Family

• BT-E6000-A
• BT-E6001-A

Applicable charging arrangements can include BM-E6000 and SM-BTE60.

BT-E8010 / BT-E8014 / BT-E8016 Battery Family

• BT-E8010-A
• BT-E8014-A
• BT-E8016-A

Applicable battery mounts can include BM-E8010 and BM-E8016.

BT-E8035 / BT-E8036 Integrated Battery Family

• BT-E8035-A
• BT-E8035-L-A
• BT-E8036-A

Earlier corresponding BT-E8035, BT-E8035-L, and BT-E8036 battery versions also appear in Shimano compatibility documentation.

Associated components can include BM-E8030-A, BM-E8031-A, EW-CP100, and SM-BTE80 depending on the battery and bicycle configuration.

Shimano Charging Adapters & Ports

Electrical compatibility with the EC-E8004 does not necessarily mean every compatible Shimano battery connects directly to the charger in exactly the same way.

Shimano SM-BTE60

Shimano identifies SM-BTE60 for applicable battery systems including:

• BT-EN404 / BT-EN405 family
• BT-E6000 / BT-E6001 family

Compatible charger families include EC-E6000, EC-E6002, and EC-E8004.

Shimano SM-BTE80

Shimano identifies SM-BTE80 for applicable battery systems including:

• BT-EN805
• BT-EN805-L
• BT-EN806
• BT-E8035
• BT-E8035-L
• BT-E8036

Compatible charger families include EC-E6000, EC-E6002, and EC-E8004.

Verify whether your particular bike requires a Shimano charging adapter or uses an appropriate direct or satellite charging port before ordering.

Before Ordering - Verify Your Shimano Battery

Do not buy this charger solely because your bicycle has a Shimano motor.

Shimano drive units are used by bicycle manufacturers with both genuine Shimano batteries and third-party battery systems. A bike equipped with a Shimano E7000, E8000, EP8, EP800, or EP801 drive unit does not automatically use the EC-E8004 charging architecture.

Use this process before ordering:

• Locate the battery manufacturer's label.
• Confirm that the bicycle actually uses a genuine Shimano battery system.
• Locate the exact Shimano battery model number.
• Compare the battery model with the compatible battery families listed above.
• Verify the bicycle's charging port and any required Shimano charging adapter.
• Compare your existing charger and charging connection to the product photos.

Common compatible battery numbers can include BT-E8010, BT-E8014, BT-E8016, BT-E8035, BT-E8035-L, BT-E8036, BT-EN805, BT-EN805-L, BT-EN806, and other Shimano-approved battery models listed above.

If you are unsure, contact Granite Bike Works with a photo of your battery label, original charger label, charging connector, bike make, bike model, and model year before ordering.

Shimano Motor Does Not Equal Shimano Battery

This distinction is especially important on eMTBs.

Bicycles using Shimano E7000, E8000, EP8, EP800, or EP801 motors can use different battery and charging systems depending on the bicycle manufacturer.

For example, some Shimano-powered bikes use proprietary or third-party battery systems with completely different chargers. A Shimano drive unit therefore cannot be used by itself to determine EC-E8004 compatibility.

Battery system compatibility is the determining factor.

Why Choose the Genuine Shimano EC-E8004-2?

• Genuine Shimano OEM charger
• 42V DC / 4A high-output charging
• Designed specifically for compatible Shimano battery systems
• Potential fast-charging upgrade from EC-E6002 on supported batteries
• Compatible with numerous current and legacy Shimano STEPS battery families
• Useful as a replacement or second charger
• North American EC-E8004-2 configuration
• Shimano battery-management and charging architecture
• No need to rely on an unknown generic charger for a supported Shimano battery

Includes

• Genuine Shimano EC-E8004-2 42V 4A STEPS Fast Charger
• Built-in North American AC power cable
• Integrated charging cable / connector as supplied by Shimano
• Ships from Granite Bike Works in Northern California, USA

Search Keywords

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Compatibility Notice

Battery models, charger models, drive-unit names, charging adapters, and component references listed on this page are provided to help identify compatible Shimano charging systems. They do not guarantee compatibility with every bicycle using a Shimano drive unit. Compatibility is determined by the battery model, charging architecture, charging port, and any required Shimano adapter. Always verify your exact battery and charging configuration before ordering.