LANGUAGE & CURRENCY
AUTOOL EM355 Power Inverter ECU Programming
US$520.00
Key Features
- Adjustable ECU Voltage
- 3-in-1 Power Supply
- Nine Safety Layers
- Adjustable ECU Voltage: Offers an adjustable 10.8V to 16V range for matching programming voltage to different vehicle needs.
- 3-in-1 Power Supply: Combines ECU programming support, charging, and battery repair in one workshop device.
- Nine Safety Layers: Real-time monitoring and nine layers of protection help safeguard the battery during charging and programming.
- 3-Year Warranty Main unit 3 years · Accessories 1 year
- 90-Day Returns Eligible returns within 90 days
- Official Store Genuine products · Direct support
AUTOOL EM355
Product Overview
The AUTOOL EM355 is a 3-in-1 inverter programming power supply for repair workshops, ECU programming, stable battery charging, and battery restoration. It provides an adjustable programming voltage range of 10.8V to 16V, supports multi-level intelligent charging, automatically stops when fully charged, monitors battery status in real time, and uses nine layers of safety protection during charging and power supply work.
ECU Programming 10.8V-16V Output Fast Charging 9 Safety Protections
120AProgramming Current
20A / 12VLead-Acid Charging
1200WRated Input Power
3 YearsWarranty Support
Click to enlargeBefore You Order And Use
Before You Order And Use
Review these safety instructions before using EM355 for battery restoration, EFB charging, in-car charging, or external charging. Repair mode and EFB batteries require extra care.
Remove Battery Before Repair Mode
Repair mode may damage vehicle electronics. Always remove the battery from the vehicle before using repair mode.
Repair Depends On Battery Condition
If a battery has been deeply discharged for a long time due to sulfuric acid buildup, repair mode can help activate sulfuric acid density and address sulfur layer degradation, but success depends on the degree of vulcanization.
Use Repair Mode Carefully
Repair mode may cause fluid loss or drying inside the battery. Do not use it as a universal repair method for every failed battery.
EFB Is Not For In-Car Charging
For safety reasons, the In-car Charging mode does not include an EFB battery option.
External Charging For EFB
If the battery is EFB type, remove it from the vehicle and select External Charging mode before charging.
EFB Overheat Risk
EFB batteries contain liquid electrolyte. Boiling or overheating during charging may cause fire or explosion.
Safety Reminder
- Do not use Repair Mode while the battery is installed in the vehicle.
- Use External Charging mode for EFB batteries after removing the battery from the vehicle.
- Contact support before ordering if you are unsure about battery type, input voltage version, or EM355 / EM365 / EM385 model selection.
How To Choose
How To Choose
EM355 is the practical choice for ECU programming power supply and lead-acid battery charging. Compare EM355, EM365, and EM385 before ordering if you need emergency start, car exhibition mode, lithium battery support, or a touchscreen.
Choose EM355 For Core ECU Programming
Choose EM355 if you need 10.8V-16V programmable voltage, 120A programming current, fast charging, battery restoration, and support for common lead-acid battery types.
Choose EM365 For Emergency Start
Choose EM365 if you also need 400A / 12V starting current and car exhibition mode. EM355 does not support starting current or vehicle display mode.
Choose EM385 For Lithium Batteries
Choose EM385 if you need LiFePO4 or NCM lithium battery support. EM355 and EM365 are not lithium battery chargers.
Choose EM385 For Touchscreen Control
EM385 adds adjustable charging power, a 4.3-inch touchscreen, a wider 9V-16V programming range, and 40A / 12V lead-acid battery charging.
Product Comparison
Product Comparison
The three models share fast charging mode, programmable power mode, multi-level intelligent charging, adjustable programming voltage, high-speed cooling fan, battery restoration, IP21S protection, insulation grade F, and five language options. The key differences are charging power adjustment, touchscreen, car exhibition mode, lithium support, starting current, programming current, and rated input power.
EM355 Focus2.8-inch non-touch screen, 10.8V-16V programming voltage, 20A / 12V lead-acid charging, 120A programming current, 1200W rated input power, and 2m / 16mm² pure copper cable.
EM365 UpgradeAdds car exhibition mode, 400A / 12V starting current, 150A programming current, 1500W rated input power, and 3m / 16mm² pure copper cable.
EM385 UpgradeAdds adjustable charging power supply, touchscreen, 4.3-inch screen, 9V-16V programming voltage range, 40A / 12V lead-acid charging, and lithium battery charging support.
Battery DifferenceEM355 and EM365 support standard lead-acid, AGM flat plate, AGM spiral, GEL, and EFB batteries. EM385 also supports LiFePO4 and NCM lithium batteries.
Decision CheckChoose by lithium battery need, emergency start need, car exhibition mode, screen type, programming current, charging current, input power, and cable length.
Click to enlargeKey Features
Key Features
EM355 combines programmable power supply mode, intelligent charging, battery restoration, multi-battery compatibility, five language options, nine safety protections, LCD control, cooling, and workshop-ready cabling.
Programmable Power Supply Mode
Precisely adjusts voltage from 10.8V to 16V for ECU programming and decoding operations. Two voltage stabilization modes are available: adjustable mode and fixed mode.
Worry-Free Fast Charging
Automatically detects battery status, intelligently adjusts voltage and current, improves charging efficiency, and stops when the battery is fully charged.
Multi-Stage Smart Charging
Initial pulse charging gradually increases power, middle-stage charging switches to high power, and final-stage charging changes to trickle charging to help prevent overcharging.
Battery Restoration Function
Advanced pulse restoration technology helps restore batteries affected by poor starting ability, severe discharge, or prolonged inactivity. Use Repair Mode only after removing the battery from the vehicle.
Nine Layers Of Safety Protection
Includes emergency stop, short circuit protection, overheat protection, overvoltage protection, undervoltage protection, reverse polarity protection, no-load protection, output overcurrent protection, and output overvoltage protection.
Workshop-Friendly Design
The EM355 includes a 2.8-inch HD LCD screen with adjustable brightness, a high-speed cooling fan, IP21S protection, five language options, and a 2-meter pure copper cable.
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Click to enlargeCompatibility And Fitment
Compatibility And Fitment
EM355 supports common lead-acid battery categories used in workshop charging and power supply applications. Lithium battery charging is not supported by EM355.
Supported Battery Types
Standard lead-acid, AGM flat plate, AGM spiral, GEL, and EFB batteries are supported.
Lithium Battery Limit
EM355 does not support LiFePO4 or NCM lithium battery charging. Choose EM385 if lithium battery support is required.
EFB Charging Rule
EFB batteries should be removed from the vehicle and charged with External Charging mode.
Repair Mode Boundary
Repair Mode is intended for batteries affected by deep discharge, poor starting ability, or prolonged inactivity. It may not restore every battery.
Click to enlargeSpecifications
AUTOOL EM355 Product Specifications
The following specifications summarize EM355 programming power supply, charging, battery compatibility, safety protection, interface, cable, and body details. Input voltage version may vary by region, so confirm the selected version before ordering.
| Power Supply And Charging | |
| Product | AUTOOL EM355 Inverter Programming Power Supply |
| Mode Selection | Fast Charging Mode / Programmable Power Mode |
| Programming Voltage Range | 10.8V-16.0V |
| Programming Power Supply Current | 120A |
| Lead-Acid Battery Charging Current / Voltage | 20A / 12V |
| Adjustable Charging Power Supply | Not supported on EM355 |
| Lithium Battery Charging Current / Voltage | Not supported on EM355 |
| Starting Current / Voltage | Not supported on EM355 |
| Rated Input Power | 1200W |
| Rated Input Voltage | 110V±25% / 220V±25% shown in the model comparison; 220V±25% shown in the EM355 specification image. Confirm regional version before ordering. |
| Input Frequency | 50Hz / 60Hz shown in the model comparison; 50Hz shown in the EM355 specification image. Confirm regional version before ordering. |
| Input Current | 110V 20A Max / 220V 13A Max |
| Battery And Protection | |
| Compatible Battery Types | Standard lead-acid, AGM flat plate, AGM spiral, GEL, and EFB |
| Multi-Level Intelligent Charging | Supported |
| Battery Restoration Function | Supported; remove battery from vehicle before using Repair Mode |
| Safety Protection | Emergency stop, short circuit, overheat, overvoltage, undervoltage, reverse polarity, no-load, output overcurrent, and output overvoltage protection |
| No-Load Power Loss | 6W |
| Efficiency | 81% |
| Enclosure Protection Level | IP21S |
| Insulation Grade | F |
| Display, Cable And Body | |
| Screen Type | 2.8-inch non-touch HD LCD screen |
| Language Type | English, French, German, Spanish, and Russian |
| Car Exhibition Mode | Not supported on EM355 |
| Pure Copper Cable | 2m / 16mm² |
| High-Speed Cooling Fan | Supported |
| Product Size | 417 × 316 × 188mm |
Click to enlarge Click to enlargePower Supply And Charging
Mode SelectionFast Charging / Programmable Power
Programming Voltage Range10.8V-16.0V
Programming Current120A
Lead-Acid Charging20A / 12V
Rated Input Power1200W
Input VoltageRegional version may vary
Battery And Protection
Supported BatteriesLead-acid / AGM / GEL / EFB
Lithium ChargingNot supported
Battery RestorationSupported with battery removed
Protection9 safety protections
IP RatingIP21S
Design
Screen2.8-inch non-touch LCD
LanguagesEN / FR / DE / ES / RU
Cable2m / 16mm² pure copper
Size417 × 316 × 188mm
Click to enlargeProduct Details
Product Details
The EM355 detail image identifies the emergency stop, output terminal, power switch, and cooling fan so users can quickly recognize the main interface and safety-control areas.
Emergency Stop
The emergency stop area is clearly identified on the product interface for quick shutdown reference.
Output Terminal
The output terminal position is shown for power connection orientation.
Power Switch
The power switch location is marked for startup and shutdown operation.
Cooling Fan
The cooling fan position is shown as part of the inverter heat-dissipation layout.
Click to enlargeWhat Is In The Box
What Is In The Box
The packing list image shows the EM355 main unit and included accessories. Final package contents should be confirmed by the package image and the selected regional version.
Main UnitAUTOOL EM355 inverter programming power supply
Battery Clamp CableBattery clamp cable shown in the package image
Power CablePower cable shown in the package image; plug type may depend on regional version
DocumentationAUTOOL EM355 user manual
Retail BoxEM355 retail packaging shown in the package image
AccessoriesAccessories shown in the package image
Manual And Downloads
Manual And Downloads
Download the EM355 manual for setup, programming power mode, charging mode, battery restoration, safety instructions, and interface guidance.
Click to enlargeNeed Version Confirmation?
Contact AUTOOL Store before ordering if you need to confirm input voltage version, plug type, battery compatibility, EFB charging, Repair Mode use, EM355 / EM365 / EM385 model selection, or package contents.
Related Products
Related Products
Compare related AUTOOL EM series inverter programming power supplies before choosing the right emergency start, car exhibition mode, touchscreen, lithium battery support, and programming current.
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Questions And Answers
These answers cover EM355 battery compatibility, Repair Mode safety, EFB charging, lithium battery limits, model differences, input voltage confirmation, safety protections, and package contents.
AUTOOL EM355 is a 3-in-1 inverter programming power supply for ECU programming power support, intelligent battery charging, and battery restoration. It provides a 10.8V-16V programmable voltage range and 120A programming power supply current for stable workshop use.
EM355 supports standard lead-acid, AGM flat plate, AGM spiral, GEL, and EFB batteries. For EFB batteries, remove the battery from the vehicle and use External Charging mode.
No. EM355 does not support lithium battery charging. Choose EM385 if you need support for LiFePO4 or NCM lithium batteries.
No. Repair Mode may damage vehicle electronics. Always remove the battery from the vehicle before using Repair Mode. Repair success depends on the battery’s vulcanization level and overall condition.
EFB batteries contain liquid electrolyte that may boil during charging. Overheating may cause fire or explosion. For safety, remove the EFB battery from the vehicle and use External Charging mode.
EM355 focuses on core ECU programming power supply and 20A / 12V lead-acid charging. EM365 adds car exhibition mode, 400A / 12V starting current, 150A programming current, and 1500W rated input power. EM385 adds adjustable charging power, touchscreen control, 4.3-inch screen, lithium battery charging, 9V-16V programming range, and 40A / 12V lead-acid charging.
No. EM355 does not support starting current or car exhibition mode. Choose EM365 or EM385 if you need 400A / 12V starting current and vehicle display mode.
The model comparison shows 110V±25% / 220V±25%, while the EM355 specification image shows 220V±25%. Input voltage and plug type may vary by regional version. Confirm the selected version before ordering.
EM355 includes emergency stop, short circuit protection, overheat protection, overvoltage protection, undervoltage protection, reverse polarity protection, no-load protection, output overcurrent protection, and output overvoltage protection.
Refer to the Packing List image for final contents. The image shows the EM355 main unit, retail box, battery clamp cable, power cable, and user manual. Plug type and package details may depend on regional version.
AUTOOL provides 3-year warranty support for eligible non-human damage cases. Contact support for setup, model selection, battery compatibility, package confirmation, or troubleshooting.
Warranty And Contact
Warranty And Contact
For EM355 setup, input voltage version, plug type, Repair Mode, EFB battery charging, lithium battery needs, EM355 / EM365 / EM385 comparison, package contents, manual download, or warranty support, contact AUTOOL Store directly.
Pre-Sales And Product Support
Use support if you need help confirming whether EM355 is suitable for your ECU programming, charging, or battery restoration workflow. Support can also help compare EM355 with EM365 and EM385 before ordering.
- 3-year warranty support for eligible non-human damage cases
- EM355 / EM365 / EM385 model selection
- Input voltage and plug version confirmation
- EFB battery charging and Repair Mode safety confirmation
- Lithium battery compatibility guidance
- Packing List and accessory confirmation
- ECU programming voltage and current confirmation
Customer Reviews
Leave A Review
Alberto Rodezno (verified owner) –
Worth buying
I thought about it for a long time, and it turned out that I made the right choice. This is a very good device that can be charged intelligently! I originally wanted to choose EM385, but the merchant suggested that I buy EM355, which is enough because I don’t need to use lithium batteries.
Mamery (verified owner) –
flash helper
Main purpose of me purchasing this is for live flash coding and programming for European vehicles. I did not use the voltage stabilizee function yet but i think it will be capable, it has a battery repair mode which works as long as your battery voltage is not too low otherwise it will not detect it. I have smaller chargers that detects low voltage batteries. I found out in order to be able to make it detect it is by using its jumpstart function until the amperage reaches 4amp then switch back to repair mode or charging mode and it will work. Note that some batteries cannot be recovered no matter what you do and this device is not to blame for it. It is quite easy to use, seems like a strong and solid build
Solomon Whitman (verified owner) –
I recently purchased the EM355, after receiving it I marveled at the function of…
I recently purchased the EM355, after receiving it I marveled at the function of this product, the product has on the market most of the same type of product, not only the function, can see AUTOOL very heart to do this product, the product’s material is very durable, the design is very heart, I think that this can be the product is very worth buying.