Introduction
The YESPER Armor Car Jump Starter is a powerful and versatile device designed to jump start vehicles with dead batteries, serve as a portable power bank, and provide emergency lighting. This manual provides essential information for safe and effective use of your device.

Image: YESPER Armor Car Jump Starter, highlighting its 24-month warranty, 88.8Wh capacity, and 4000A peak current.
Package Contents
Please check the package contents upon receipt to ensure all items are present:
- 1 x YESPER Armor 4000A Jump Starter (24000mAh)
- 1 x Battery Clamp & Jumper Cable
- 1 x 100W Car Charger
- 1 x 60W USB-C to C Cable
- 1 x Cigarette Lighter Socket Adapter
- 1 x EVA Bag
- 1 x User Manual

Image: Visual representation of the package contents, including the jump starter, cables, clamps, car charger, adapter, EVA bag, and user manual.
Safety Information
Your YESPER Armor Jump Starter is equipped with 10 safety protection features to ensure safe operation:
- Short circuit protection
- Over current protection
- Over charge protection
- Over discharge protection
- Over voltage protection
- Over temperature protection
- Reverse charge protection
- Reverse connection protection
- AI software protection
- Low power consumption protection

Image: Icons and text detailing the 10 safety protection features, including short circuit, over current, over charge, over discharge, over voltage, over temperature, reverse charge, reverse connection, AI software, and low power consumption protection.
Setup and Charging
Before first use, ensure your jump starter is fully charged. The device features 100W two-way fast charging.
Charging the Jump Starter:
- Connect the included 60W USB-C to C Cable to the jump starter's USB-C port.
- Connect the other end of the USB-C cable to the 100W Car Charger or a compatible USB-C power adapter.
- The device can charge from 0% to 100% in approximately 45 minutes using the 100W car charger.
- A 5-minute charge is sufficient to provide enough power for a single car jump start.

Image: The jump starter connected to a 100W car charger via a USB-C cable, illustrating its fast charging capability (5 minutes for a start, 45 minutes for full charge).
Operating Instructions
Jump Starting Your Vehicle:
The YESPER Armor can jump start 12V vehicles with up to 10L Gas or 10L Diesel engines. It offers both normal and boost start modes.
Normal Start Mode:
- Attach Clamps Correctly: Connect the red clamp to the positive (+) terminal of your car battery and the black clamp to the negative (-) terminal. Ensure a secure connection.
- "READY" Light Up: Wait for the "READY" indicator light on the jump starter's screen to illuminate. This indicates the device is ready to provide power.
- Start Vehicle: Once the "READY" light is on, start your vehicle's engine.

Image: Three-step visual guide for normal jump start: attach clamps, wait for "READY" light, and start the vehicle.
Boost Start Mode (for 100% Dead Batteries):
For completely dead batteries, use the Boost Start mode:
- Attach Clamps Correctly: Connect the red clamp to the positive (+) terminal of your car battery and the black clamp to the negative (-) terminal.
- Press "BOOST" Button: Locate and press the "BOOST" button on the jump starter.
- "READY" Light Up: The "READY" indicator light will illuminate on the screen.
- Start Vehicle: Start your vehicle's engine.

Image: Four-step visual guide for boost jump start: attach clamps, press "BOOST" button, wait for "READY" light, and start the vehicle.
Important: After successfully starting the vehicle, immediately disconnect the jump starter from the car battery.
Video Tutorial: How to Jump Start
Video: A demonstration of how to jump start a car using the YESPER Armor jump starter, including connecting clamps and starting the vehicle.
Using as a Portable Power Bank:
The YESPER Armor features a massive 24000mAh power reserve and multiple output ports:
- USB-C Input/Output: PD100W Max (5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A) - for charging the jump starter or powering compatible devices.
- USB-A1 Output: QC3.0 18W Max (5V/3A, 9V/2A, 12V/1.5A) - for fast charging smartphones and tablets.
- USB-A2 Output: 5V/2.4A - for standard charging of USB devices.
- 150W DC Output: For powering 15V/12V DC devices like tire inflators or inverters (via Cigarette Lighter Socket Adapter).

Image: The jump starter connected to a tablet and smartphone, demonstrating its function as a portable power bank with various output ports (USB-C, USB-A, DC).
Using the LED Light:
The device is equipped with a 400 lumens LED light with three modes:
- Illumination: Standard flashlight mode for general lighting.
- SOS: Flashing signal for emergency situations.
- Strobe: Rapid flashing light for attracting attention.

Image: A person using the 400 lumens LED light of the jump starter, illustrating its lighting, SOS, and strobe functions.
Maintenance
To ensure optimal performance and longevity of your YESPER Armor Jump Starter:
- Recharge Regularly: For optimal performance, recharge the device every 6 months, even if not in use.
- Storage: Store the jump starter in a cool, dry place. It can maintain a full charge for up to 2 years under normal storage conditions.
- Cleaning: Wipe the device with a dry, soft cloth. Do not use harsh chemicals or abrasive cleaners.
- Temperature: Avoid exposing the device to extreme temperatures. The recommended service temperature is -20°C to 60°C.

Image: The jump starter display showing 100% charge, with text indicating 24-month standby and a tip to recharge every 6 months for optimal performance.
Troubleshooting
If you encounter issues with your jump starter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not turn on. | Low battery or device is off. | Charge the jump starter. Press and hold the power button to turn it on. |
| "READY" light does not illuminate. | Clamps not connected correctly or battery is severely discharged. | Ensure clamps are securely connected to the correct battery terminals. Try Boost Start mode for completely dead batteries. |
| Vehicle does not start after jump start attempt. | Vehicle battery issues beyond a simple jump start, or other vehicle problems. | Attempt jump start again after a few minutes. If unsuccessful, consult a mechanic. |
| Device gets warm during use. | Normal operation, especially during high current output. | This is normal. If it becomes excessively hot or emits smoke, discontinue use immediately and contact support. |
Specifications
| Feature | Specification |
|---|---|
| Brand Name | YESPER |
| Model | B-ARMOR-EVA |
| 3-IN-1 Power | Jump Starter | Power Bank | LED Light |
| Battery Type | Lithium Polymer |
| Battery Capacity (mAh) | 24000mAh (88.8Wh Total Energy) |
| Battery Voltage | 3.7V Nominal (12V Jump-Start) |
| Peak Current | 4000A |
| Cranking Power | 600A Starting Current |
| Gas Engine Rating | Up to 10L |
| Diesel Engine Rating | Up to 10L |
| USB-C Input/Output | PD100W Max (5V/3A, 9V/3A, 12V/3A, 15V/3A, 20V/5A) |
| USB-A1 Output | QC3.0 18W Max (5V/3A, 9V/2A, 12V/1.5A) |
| USB-A2 Output | 5V/2.4A |
| LED Light Modes | Illumination/SOS/Strobe (400 Lumens) |
| Service Temperature | -20°C ~ 60°C |
| Charge Time (0-100%) | 45 Minutes (with 100W car charger) |
| Long-lasting Standby | Up to 24 Months |
| Item Weight | 0.90 kg (1.98 lb) |
| Product Dimensions | Approx. 5.28 x 10.49 x 23.80 cm (2.08"D x 4.13"W x 9.37"H) |
| Certified | CE, FCC, SDS, MSDS, UL, RoHS |

Image: A chart illustrating the universal compatibility of the jump starter with various engine sizes, from 1.5L to 10.0L, covering motorcycles to heavy semi-trucks.
User Tips
- Always ensure the jump starter is adequately charged before storing it in your vehicle for emergencies.
- When jump starting, double-check the polarity of the battery terminals to avoid damage to the device or vehicle.
- For optimal battery health, avoid completely draining the jump starter's internal battery frequently.
- Keep the device and its accessories clean and dry.
Warranty and Support
The YESPER Armor Car Jump Starter comes with a 24-month warranty. For any questions, concerns, or technical support, please contact YESPER Official Store customer service.
Contact information can typically be found on the seller's store page or through the platform where the product was purchased.




