The Schumacher SL1391, SL1398, and SL1399 are Lithium Ion Tactical Jump Starter Lights designed to provide emergency jump-starting capabilities for vehicles, along with a powerful flashlight and the ability to charge mobile devices. This versatile unit combines several essential functions into a compact and portable design, making it a valuable tool for roadside emergencies, outdoor activities, and everyday use.
Function Description
The primary function of these devices is to jump start a vehicle engine with a dead or low battery. They utilize a high-capacity lithium-ion internal battery to deliver a burst of power to the vehicle's battery, enabling the engine to crank and start. The jump starter is equipped with a "smart cable" system that incorporates safety features to ensure correct connection and prevent damage to the vehicle's electrical system or the jump starter itself. This smart cable detects the vehicle's voltage and provides visual feedback (LED indicators) to guide the user through the jump-starting process, including warnings for reversed connections or short circuits.
Beyond jump starting, the unit also serves as a powerful flashlight. The flashlight features multiple modes, including a steady glow, a strobe mode for signaling, and an SOS signal mode, enhancing its utility in various situations, especially in low-light conditions. The light output is significant, providing ample illumination for working under the hood or navigating in the dark.
Additionally, the device includes a USB output port, allowing it to function as a portable power bank for charging mobile devices such as smartphones, tablets, or other USB-powered gadgets. This feature is particularly useful when access to traditional power outlets is unavailable, providing a convenient way to keep essential electronics charged during emergencies or while on the go.
Usage Features
The Schumacher Tactical Jump Starter Light is designed for ease of use, incorporating several features to make its operation straightforward and safe.
Jump Starting a Vehicle Engine:
To jump start a vehicle, the unit requires its internal battery to be charged to at least 50%. The process involves connecting the smart cable clamps to the vehicle's battery terminals and chassis. The smart cable's LED indicators guide the user: a flashing green LED indicates readiness to connect, a solid green LED with a clicking sound signifies detection of the vehicle and jump starter condition, and a solid green LED indicates readiness to jump start. Red LEDs and buzzer alarms alert the user to incorrect connections (reversed polarity) or short circuits, preventing potential damage. Once properly connected and the smart cable shows a solid green light, the vehicle's ignition can be turned to the ACC position, and then the engine can be cranked. If the engine doesn't start within 5-8 seconds, it's recommended to stop cranking, wait a few minutes, and try again. The manual advises against more than three consecutive jump start attempts. For cold weather conditions, a unique feature allows the user to turn on all lights and electrical accessories for one minute with the jump starter connected, which draws current and warms the internal battery, potentially improving starting performance.
Flashlight Operation:
The flashlight is activated by pressing and holding the Power button for 3 seconds. Subsequent light presses cycle through the different modes: steady glow, strobe mode, SOS signal, and off. This multi-mode functionality provides flexibility for various lighting needs, from general illumination to emergency signaling.
Charging Mobile Devices:
The unit's USB output port provides up to 2.1A at 5V DC, suitable for fast charging most mobile devices. To charge a device, simply connect it to the USB port using a compatible cable. Charging typically begins automatically. The charging time will vary depending on the mobile device's battery size.
Battery Level Indication:
The device features a battery level LED that indicates the charge status of the internal lithium-ion battery. A flashing red LED signifies ≤ 5% power, a solid red LED indicates ≤ 50% power, and a solid green LED means > 50% power. This allows users to quickly assess the unit's charge level and determine when it needs recharging.
Safety Precautions:
The manual emphasizes numerous safety precautions to ensure safe operation. These include warnings about the risk of electric shock, fire, and explosive gases from lead-acid batteries. Users are advised to wear eye and body protection, avoid smoking or open flames near batteries, and prevent metal tools from dropping onto the battery. The unit should not be exposed to rain or snow, operated with damaged cables, or disassembled. It is also crucial not to look directly into the light or shine it into the eyes of any person or animal.
Maintenance Features
Proper maintenance is essential to ensure the longevity and effective performance of the Schumacher Tactical Jump Starter Light.
Regular Charging:
A critical maintenance instruction is to charge the internal battery immediately after purchase, after each use, and at least every three months. This is vital for keeping the internal battery fully charged and prolonging its life. Failure to do so, especially allowing the charge level to fall below 50% for extended periods, can reduce the battery's capacity and potentially void the warranty. The charging process involves connecting the micro USB charging cable to the unit's input port and a 1A USB charger (not included) to a live power source. The LED indicators will show the charging progress: flashing red for ≤ 50% power, flashing green for > 50% power, and solid green for 100% power.
Cleaning:
The unit requires minimal cleaning. Users are advised to use a dry cloth to wipe any dirt or oil from the smart cable, charging cable, and the unit's case. This helps maintain the integrity of the components and ensures reliable connections.
Storage:
For optimal storage, the unit should be kept inside, in a cool, dry place. The ideal storage temperature is around 70°F (21°C). It's important to avoid damaging the smart cable, charging cable, and the unit itself during storage. Since all batteries are affected by temperature, storing the unit in warm environments can lead to gradual self-discharge. Regular charging every three months, even when not in use, is crucial to prevent the internal battery from entering a discharged state, which can cause permanent damage.
Servicing:
The manual explicitly states that servicing does not require opening the unit, as there are no user-serviceable parts inside. Any necessary servicing or repairs should be performed by qualified service personnel to ensure safety and proper function. Disassembly by unauthorized individuals may result in a risk of fire or electric shock.
Troubleshooting:
The manual includes a troubleshooting section to help users address common issues. For example, if the unit does not operate, the possible cause could be an uncharged battery, with the solution being to recharge it. If the unit won't recharge, checking the power source is advised. If the jump starter turns on but won't start the vehicle, checking connections, verifying the battery power level (must be at least 50%), or recognizing that the vehicle requires more power than the unit can supply are suggested. The smart cable's LED and alarm behavior also provide diagnostic information, indicating conditions like reversed connections, short circuits, or overload protection, prompting the user to disconnect and reconnect the smart cable to reset.
In summary, the Schumacher SL1391, SL1398, and SL1399 are comprehensive emergency tools designed for reliability and user safety. Their multi-functional capabilities, combined with clear operational guidelines and straightforward maintenance requirements, make them a practical choice for anyone needing a portable jump starter, flashlight, and mobile device charger.
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