Schumacher Electric SL1327

Questions and Answers

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Olivia RileyAug 7, 2025
What to do if Schumacher Electric SL1327 turns on but won't jump start vehicle?
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  John BrowningAug 7, 2025
  If your Schumacher Electric Remote Starter turns on but won't jump start your vehicle, ensure you've pressed the smart cable's button. Also, verify the charge level of the jump starter is at least 40%. Do not attempt to jump start your vehicle more than three consecutive times. If the vehicle still does not start, consult a qualified service technician.
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Shane CombsAug 15, 2025
How to fix Schumacher Electric SL1327 Remote Starter display that won't turn on?
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  timothywagnerAug 15, 2025
  If the display of your Schumacher Electric Remote Starter does not turn on, ensure the unit is charged by connecting it to a power source to reset it. Also, make sure the ON/OFF switch is set to the ON position.
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Stephen SmithAug 22, 2025
What to do if green LED on Schumacher Electric Remote Starter smart cable doesn't light?
- E
  ebriggsAug 22, 2025
  If the green LED on the smart cable of your Schumacher Electric Remote Starter does not light when its button is pressed, check the connections. If an LED is flashing, refer to the table below. When the condition is corrected, the smart cable will automatically reset.
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Melissa OrtizAug 30, 2025
Why is the thermometer symbol flashing on my Schumacher Electric SL1327 Remote Starter?
- A
  Alexandra CookAug 30, 2025
  The thermometer symbol flashes on your Schumacher Electric Remote Starter when the unit is too hot or too cold. The thermometer symbol will disappear when the condition is removed.

Summary

Operating Instructions

Jump Starting a Vehicle Engine

Details the process of jump starting a vehicle engine using the jump starter.

Charging a Mobile Device

Explains how to use the unit's USB ports to charge mobile devices.

Using the LED Light

Describes the functionality and modes of the unit's LED light.

The Schumacher SL1327 is a portable jump starter designed for vehicles, featuring a lithium-ion polymer internal battery. This device is intended to provide a quick boost to a vehicle's battery, as well as offer charging capabilities for mobile devices and an integrated LED light for various situations.

Function Description:

The primary function of the SL1327 is to jump start vehicle engines. It connects to a vehicle's battery using smart cables and clamps, providing the necessary power to start an engine with a discharged battery. Beyond jump starting, the unit also serves as a portable power bank, equipped with USB output ports to charge mobile devices. An integrated LED light provides illumination, including steady glow, SOS signal flash, and strobe mode, making it useful in emergency situations or for general utility. The device is designed for safe and effective use, incorporating various safety features and warnings to prevent hazards such as battery explosions, electric shock, and fire.

Important Technical Specifications:

Model: SL1327
Internal Battery Type: Lithium ion polymer
Capacity: 37 Wh
Jump Start Capability: 800A peak / 400A cranking
USB Output:
- One port: 5V DC, 2.4A
- One port (Qualcomm® Quick Charge™ 3.0 Technology): 5V, 3A / 9V, 2A / 12V, 1.5A
Charging Temperature: 32°-122°F (0°-50°C)
Storage Temperature: -4°F-+140°F (-20°C-+60°C)
Charging Time: Approximately 4-5 hours for a full charge using a 2A USB charger.
Required Jump Cable: SA861 smart cable/battery clamps
Charging Cable: Micro USB-USB charging cable

Usage Features:

Jump Starting:
- Requires the SA861 smart cable/battery clamps.
- The internal battery must have at least a 40% charge to jump start a vehicle.
- Connects to the vehicle battery (positive to positive, negative to chassis for negative-grounded vehicles, or negative to negative, positive to chassis for positive-grounded vehicles).
- Features a control button on the smart cable to activate jump start mode. A green LED on the smart cable indicates readiness.
- Includes safety features such as short circuit protection, reverse polarity protection, reverse charging protection, low voltage protection, and high temperature protection, indicated by flashing LEDs on the smart cable.
- The unit should not be used while charging its internal battery.
- It is crucial not to attempt jump starting more than three consecutive times.
- Cold weather may affect performance; a warming procedure involving turning on vehicle accessories can be used to warm the battery.
Mobile Device Charging (USB Ports):
- Equipped with two USB output ports: one standard 2.4A port and one Quick Charge 3.0 port.
- Automatically begins charging when a device is connected and the ON/OFF switch is in the ON position.
- The LCD display shows which port is in use.
- USB ports automatically shut off after 30 seconds if no device is connected.
LED Light:
- Activated by holding the display button for 3 seconds.
- Cycles through steady glow, SOS signal flash, and strobe mode with subsequent presses of the display button.
- Turned off by holding the display button again.
LCD Display: Shows the internal battery's percentage of charge, charging status ("IN"), and port usage for mobile device charging.
ON/OFF Switch: Controls the overall power to the unit.
Portability: Comes with a carrying bag for convenience.

Maintenance Features:

Charging Schedule:
- Charge immediately after purchase.
- Charge after each use.
- Charge every 30 days, or when the charge level falls below 85%, to maintain battery life and keep it fully charged.
- Never completely discharge the battery.
- Do not use the unit to jump start a vehicle while charging the internal battery.
Cleaning: Use a dry cloth to wipe off battery corrosion, dirt, or oil from the battery clamps, cords, and outer case.
Storage: Store the unit within the specified temperature range of -4°F to +140°F (-20°C to +60°C).
Service: The unit is not user-serviceable. Do not disassemble. Any service or repair should be performed by a qualified service person.
Safety Precautions:
- Always work in a well-ventilated area when charging the internal battery.
- Avoid contact with battery acid; have fresh water, soap, and baking soda nearby.
- Wear complete eye and body protection.
- Never smoke or allow sparks/flames near a lead-acid battery.
- Remove personal metal items when working with a lead-acid battery.
- Do not allow clamps to touch each other or the same piece of metal to prevent sparking.
- Do not expose the unit to rain or snow.
- Do not operate with damaged cables or clamps.
- If the unit has been dropped or damaged, take it to a qualified service person.
- Do not set the unit on flammable materials.
- Never place the unit directly above the battery being jumped.
- In case of a lithium-ion battery fire, use appropriate extinguishing agents (water, foam, Halon, CO2, ABC dry chemical, powdered graphite, copper powder, or sodium carbonate). After extinguishing, cool the product with water or nonalcoholic liquids to prevent re-ignition.