Yard Force LX JS12 Jump Starter, Work Light, and Power Bank
This document provides the original instructions for the Yard Force LX JS12, a versatile device that functions as a jump starter, work light, and power bank. It includes essential safety information, operating procedures, technical specifications, and troubleshooting guidance.
Intended Use
This product is exclusively intended for use as a mobile light beamer for limited time in dry indoor and outdoor areas as a helper in starting motor vehicles. It is not designed for use on vehicles for illumination in road traffic. Any other use or unauthorized modification voids the warranty and manufacturer liability. The product is not designed for commercial, trade, or industrial use.
General Safety Information
WARNING: PLEASE READ THE OPERATING INSTRUCTIONS!
Read all instructions before operation and pay special attention to safety instructions. Failure to follow instructions and security measures may result in damage to the product or serious injuries.
- The user is liable for all damages caused to third parties or their property.
- Keep this instruction manual and use it for future reference. If you do not understand any instructions, contact your dealer.
- Lend this manual with the product if it is lent to another person.
- All operating personnel must be adequately trained in use, operation, and setting, and be familiar with prohibited activities.
Product Safety Information
- Never look into the LED beam, as it can cause dazzling and damage to the retina.
- Do not direct the light beam at persons or animals, and do not stare into it yourself.
- Do not shock or disassemble the flashlight. Do not attempt to replace LED bulbs.
- If the protective glass is cracked or broken, it must be replaced before use.
- Do not use the flashlight in rain, bad weather, or moist environments.
- Keep handles dry, clean, and free from oil and grease.
- Use only accessories and operations recommended in this manual to avoid personal injury or property damage.
- Use only spare parts and components provided by the manufacturer.
- Never immerse the device in water.
- If the device has been dropped or damaged, have it checked and repaired by qualified service staff.
- Never disassemble the device.
- Never leave the device in a fully discharged state for a long time, as this can permanently damage the battery. Recharge the device every three months when not in use.
Danger of Lithium Batteries
Lithium batteries have high energy density and performance, but can be hazardous if damaged or used improperly, posing a RISK OF FIRE. Risks during charging include:
- Battery fully discharged and not recharged promptly (recharge within 24 hours after use, especially if flat).
- Charging at temperatures below 4°C, which can cause chemical reactions leading to permanent damage, explosion, or fire.
- Battery contact with liquid (salt water is particularly risky).
- Exposure to liquids causing internal corrosion, cell damage, or BMS failure.
- Operating or charging a damaged battery (from dropping or shipping).
- Using a cracked or mechanically damaged battery cover.
- Using a charger other than the original one supplied with the device.
Therefore, never use any charger other than the one supplied. Do not use for charging dry cells. NEVER LEAVE THE DEVICE ON DIRECT SUN OR IN PLACES WITH HIGH TEMPERATURE (above 50°C). High temperatures can lead to overheating, explosion, and flare-up of lithium batteries.
Service
- Do not attempt to repair the device yourself. Any work not listed in this manual must be performed ONLY BY AUTHORIZED SERVICE CENTRES.
- Have your power tool serviced by a qualified repair person using only identical replacement parts to ensure safety.
Symbols
Safety symbols attract attention to possible dangers. Read and understand all safety instructions, including safety alert symbols like "DANGER," "WARNING," and "CAUTION." Failure to follow may result in electric shock, fire, or serious personal injury.
- SAFETY ALERT SYMBOL: ⚠️ Indicates DANGER, WARNING, or CAUTION.
- To reduce the risk of injury, read the instruction manual carefully.
- Do not store or use the battery in locations where the temperature may reach or exceed 50°C.
- Always wear safety glasses ? when working with batteries.
- Always wear safety gloves ? when operating.
- Lithium batteries are potentially hazardous when damaged or used improperly, posing a RISK OF FIRE.
- Do not discard electrical appliances ♻️ with household waste.
- Batteries contain Li-ion [Lithium-ion Battery]. Do not dispose of waste batteries in domestic waste. Contact local authority for disposal information.
- [United Kingdom] GB
- [European Conformity] CE
- [UK Conformity Assessed] UKCA
Technical Data
Model | LX JS12 |
---|---|
Degree of protection | IP54 |
Battery capacity | 3x4000mAh, 11.1V DC Lithium, 41.07Wh |
Output (USB1, USB2) | 5 V , max 2.1 A |
Output 12V OUT | 12 V , max 8 A |
Jump start connection (JUMP START) | 500 A, only for use with the "SMART JUMPER" jump start cable |
INPUT (USB type A) | 5 V , 2 A |
INPUT (Car cigarette lighter) | 12 V , 2 A |
Fuse (Car cigarette lighter) | F2AL250V |
Weight | 0.48 kg |
Description of Product
Parts Description (Fig. A)
- 1. Hanging loop
- 2. LED working light
- 3. Red emergency warning light
- 4. Connectors
- 5. On/Off switch
- 6. Battery status indication
- 7. Magnet for mounting
- 8. Flash light & SOS signal light
Delivery Contents (Fig. B)
Carefully unpack the appliance and check that it is complete. Dispose of packaging material correctly.
- a. Jump start device
- b. Jump start cable
- c. Charging cable (USB type)
- d. Charging cable (Car cigarette lighter)
- e. 12V output cable (Car cigarette lighter adaptor)
- f. Instruction manual
Operation
Charging the Device
The supplied battery is only partially charged. Fully charge before initial use. After the first charge, it is recommended to fully discharge and recharge the battery pack once or twice to "format" it. Perform this as soon as possible after the battery has been discharged and cooled.
To ensure long battery life, maintain it carefully:
- Recharge before first use.
- Recharge often, during use/season, or usually after using the machine.
- Recharge before leaving the machine disused for a long period or during long-term storage.
- Recharge before starting up the machine after a long period of disuse.
- Recharge the discharged battery as soon as possible. Let a hot battery cool down before charging.
- Recharge accumulators in time, before they are discharged fully, to prevent permanent damage.
- The lithium-ion battery can be charged in any state of charge; the process can be interrupted without harming the battery (no memory effect).
- Unused batteries lose capacity faster than used ones.
- Charge the battery pack in a dry place with room temperature between 5°C - 40°C.
- The battery and/or charger may warm up moderately during charging; this is normal.
- Never cover the charger.
- Significantly reduced operating times or accelerated charging times indicate reduced battery capacity and the need for replacement.
Caution! Never charge the battery in an explosive or flammable environment, near flammable liquids, on a flammable substrate, or if the battery is visibly damaged or leaking.
The charger is designed for battery packs between 0°C and 50°C. If the battery pack is too cold or too hot, the charger will not charge. Allow the battery to warm up or cool down.
Battery Status Indicators
When charging for the first time, charge for at least 6 hours. Press the power button once to see the battery status indicated by four blue LEDs:
- One LED: Battery is flat; do not use and recharge immediately.
- Two LEDs: 25-50% capacity; recharge as soon as possible.
- Three LEDs: 50-75% capacity; charge if to be used as a starting aid.
- Four LEDs: 75-100% capacity; fully or almost fully charged.
It is recommended to have the battery fully charged if used as a starting aid to increase success chances.
Charging the Device (Fig. D)
WARNING! Never use anything other than the original charger.
- Connect the charger cable's power connector to the DC IN socket.
- Connect the power supply plug to a mains electricity outlet or the charging adapter for the cigarette lighter socket.
- The charger can remain plugged in for a limited time after recharging without overcharging the battery. Disconnect when fully charged.
NOTE: Blue status lights gradually turn on according to charging status. All four blue LEDs indicate a fully charged battery. Charging a depleted battery can take up to 10 hours.
Use as a USB Power Source (Fig. D)
This device can power or recharge a wide range of small electronic devices.
- Connect the device's charging cable to the electronic device.
- Connect the USB connector of the charging cable to the USB port on the device.
- Press the power button to activate USB charging.
Use as a Work Light (Fig. F)
This device has several work light modes:
- First press: Turns on the unit, activates USB ports and battery status panel.
- Second press: Primary work light.
- Third press: Red light.
- Fourth press: Intermittent red light.
- (Note: Work light panel can be pulled out as shown in Fig. G).
- Fifth press: Front focusing lights (Fig. H).
- Sixth press: SOS signal light (Fig. H).
- Seventh press: Turns off the entire device.
NOTE: In any work light mode, you can turn off the device by pressing and holding the power button for four seconds. The battery status panel will appear.
Use as a 12V Power Source
Use the 12V output cable (Car cigarette lighter adaptor) connected to the device as a 12V power source.
Use as a Starting Aid (FIG. J)
CAUTION! Always use this device for this function only with the supplied SMART Cable. NEVER use other cables or alternative solutions!
- For optimum performance, do not store this device at temperatures below 10°C before using as a starting aid. Never charge or start a vehicle with a frozen car battery.
- Read these operating instructions and the vehicle manufacturer's manual/safety manual.
- Use the starting aid only in a well-ventilated area.
- Always wear safety glasses ? when working with batteries.
- Connect the SMART Cable connector to the device (under the side cover). Ensure a secure connection. The Smart Cable will beep several times and all LEDs will flash (status check). The blue LED will flash, indicating standby mode.
- Switch off the vehicle ignition completely before connecting the device.
- Connect the positive (red +) collet to the positive clamp of the car battery or the recommended positive connection point.
- Connect the negative (black -) collet to the negative clamp of the car battery, vehicle frame (ground), or other recommended negative connection point.
CAUTION! Ensure the connecting cable is not within range of moving engine parts (belts, fan, alternator, etc.). Place both the device and the SMART Cable on a non-flammable surface.
SMART Cable Evaluation
- If the SMART Cable light turns green: The battery is within the normal voltage range. You have 30 seconds to start the vehicle. The device returns to standby mode.
- If the SMART Cable light turns red and a warning buzzer sounds: Indicates a reverse battery connection. Disconnect vehicle cables immediately and connect them correctly.
- If the connection is correct, but the red LED still lights up on the SMART Cable and it beeps: The car battery is discharged below 10V. You can override this by pressing the Override button on the SMART Cable side for 4 seconds. The green LED will light up, giving you 30 seconds to start the vehicle. The device then returns to standby mode.
- Nobody should be within range of the battery while starting the vehicle.
- Try to start the vehicle (turn the key).
CAUTION! If the vehicle fails to start within 6 seconds, do not attempt to start it again immediately. Allow the device to cool for 3 minutes before trying again.
- When the vehicle is started, the blue LED on the SMART Cable lights up, and the warning signal beeps briefly.
- Disconnect the negative (black) collet (-).
- Disconnect the positive (red) collet (+).
- Disconnect the SMART Cable from the device and store it for future use.
Cleaning
Caution! Protect the product from direct contact with water and ensure water does not get inside.
- Always clean the product thoroughly after each use with a damp cloth, sponge, or brush.
- Avoid oil and grease contamination, especially on gripping parts. If contamination occurs, wipe with a damp cloth moistened with soapy water.
- Never use aggressive cleaning agents, solvents, or chemicals, as this could cause permanent damage to plastic parts.
Storage
- Store the machine out of reach of children.
- Do not store the product in direct sunlight for long periods.
- For safety reasons, worn or damaged parts should be replaced.
- Store in the original packaging (if possible) in a clean, dry, dark, and frost-free place protected from dust and out of reach of children.
- Cover the unit with a suitable protective cover that does not retain moisture. Do not use sheet plastic as a dust cover, as a nonporous cover will trap moisture, promoting rust and corrosion.
- The ideal storage temperature is between 5°C and 30°C.
Disposal
- Dispose of your device, accessories, and packaging in accordance with environmental protection requirements at a recycling collection center.
- This machine is not household waste. Save the environment by taking it to designated collection points where it will be received for free. For more information, contact your local authority or nearest collection point. Improper disposal may be punished according to national regulations.
- The battery contains toxic substances. Toxic materials must be disposed of in a specified manner to prevent environmental contamination. Take used batteries to a recycling center. Do not throw batteries into household waste, fire, or water.
Troubleshooting
Problem | Failure |
---|---|
The device was recharged, the charging LED signalled but there was no change in status even after several hours. | Defective charger |
The four blue status LEDs are lit during charging, indicating that the battery is fully charged. However, when the unit is removed from the charger and the power button is pressed, the status LEDs indicate a low or flat battery. | Defective battery |
Declarations of Conformity
MEROTEC GmbH
To the provisions of Council Directives
We
MEROTEC GmbH,
Otto-Brenner-Straße 8,
47877 Willich/ Deutschland
Declare that the product:
Description: Jump start
Model No. LX JS12 / SHSD-01B
Function: jump start, work light, power bank
Complies with the essential health and safety requirements of the following directives:
- Electromagnetic Compatibility Directive 2014/30/EU
- EC Directive 2011/65/EU and its amendment Directive (EU) 2015/863 (RoHS)
Standards and technical specification referred to:
- EN IEC 55015:2019+A11:2020
- EN 61547:2009
- EN 62471:2008
Authorized Signatory
Date: 18.01.2021
Signature: [Roland Menken Signature]
Place: Willich
Name: Roland Menken
General Manager
[European Conformity] CE
SUMEC UK
To the provisions of Council Directives
We
SUMEC UK
Unit A&B Escrick Business Park Escrick, York YO19 6FD
United Kingdom
Declare that the product:
Description: Jump start
Model No. LX JS12 / SHSD-01B
Function: jump start, work light, power bank
Complies with the essential health and safety requirements of the following directives:
- Electromagnetic Compatibility Regulations 2016
- The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012
Standards and technical specification referred to:
- EN IEC 55015:2019+A11:2020
- EN 61547:2009
- EN 62471:2008
Authorized Signatory
Date: 18.01.2021
Signature: [Mariana Hall Signature]
Place: York
Name: Mariana Hall
General Manager
SUMEC UK Co., Ltd.
Unit A&B Escrick Business Park
Escrick, York YO19 6FD
United Kingdom
[UK Conformity Assessed] UKCA
SUMEC France Sarl
To the provisions of Council Directives
We
SUMEC France Sarl
59 bis Rue du Mûrier
37540 Saint Cyr Sur Loire, France
Declare that the product:
Description: Jump start
Model No. LX JS12 / SHSD-01B
Function: jump start, work light, power bank
Complies with the essential health and safety requirements of the following directives:
- Electromagnetic Compatibility Directive 2014/30/EU
- EC Directive 2011/65/EU and its amendment Directive (EU) 2015/863 (RoHS)
Standards and technical specification referred to:
- EN IEC 55015:2019+A11:2020
- EN 61547:2009
- EN 62471:2008
Authorized Signatory
Date: 18.01.2021
Signature: [Rodolphe Dubois Signature]
Place: Saint Cyr Sur Loire
Name: Rodolphe Dubois
General Manager
SUMEC France Sarl
59 bis Rue du Mûrier
37540 Saint Cyr Sur Loire, France
[European Conformity] CE