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Schumacher SL1338 - User Manual

Schumacher SL1338
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1. IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS.
WARNING – RISK OF EXPLOSIVE GASES.
WORKING IN THE VICINITY OF A LEAD-ACID BATTERY IS
DANGEROUS. BATTERIES GENERATE EXPLOSIVE GASES
DURING NORMAL OPERATION. IT IS IMPORTANT THAT YOU
FOLLOW THESE INSTRUCTIONS EACH TIME YOU USE THE UNIT.
To reduce the risk of battery explosion, follow these instructions and
those published by the battery manufacturer and the manufacturer
of any equipment you intend to use in the vicinity of a battery.
Review cautionary markings on these products and on the engine.
WARNING! RISK OF ELECTRIC SHOCK OR FIRE.
1.1 Read the entire manual before using this product. Failure to do so
could result in serious injury or death.
1.2 Keep out of reach of children.
1.3 Do not put ngers or hands into any of the unit’s outlets.
1.4 Do not expose the unit to rain or snow.
1.5 Use only recommended attachments (SA932 jump cable). Use
of an attachment not recommended or sold by the jump starter
manufacturer for this unit may result in a risk of re, electric shock or
injury to persons or damage to property.
1.6 To reduce the risk of damage to the electric plug or cord, pull by the
adaptor rather than the cord when disconnecting the unit.
1.7 Do not operate the unit with damaged cables or clamps.
1.8 Do not operate the unit if it has received a sharp blow, been dropped or
otherwise damaged in any way; take it to a qualied service person.
1.9 Do not disassemble the unit; take it to a qualied service person when
service or repair is required. Incorrect reassembly may result in a risk of
re or electric shock.
1.10 Changes or modications not expressly approved by the party
responsible for compliance could void the user’s authority to operate
this device.
Jump Starter/Power Pack
OWNER’S MANUAL
PLEASE SAVE THIS OWNERS MANUAL AND READ BEFORE EACH
USE. This manual will explain how to use the unit safely and effectively.
Please read and follow these instructions and precautions carefully.
MODEL
SL1338
0099001957-07

Questions and Answers

  • S
    shane86Aug 14, 2025
    What to do if my Schumacher SL1338 turns on but won't jump start my car?
    • Z
      Zachary HoAug 14, 2025
      If your Schumacher Remote Starter turns on but doesn't jump start your vehicle, ensure the unit is adequately charged, with a charge level of at least 50%. Avoid attempting more than three consecutive jump starts. If the vehicle remains unresponsive, it's recommended to consult a qualified service technician.
  • M
    Melissa ClarkAug 18, 2025
    How to fix a Schumacher SL1338 that will not recharge?
    • C
      Charles SilvaAug 18, 2025
      If your Schumacher Remote Starter is not recharging, verify that the power source you are using is live and functioning correctly.
  • Y
    Yvonne BryantAug 21, 2025
    What to do if my Schumacher Remote Starter turns on but won’t jump start my vehicle?
    • O
      olivervirginiaAug 21, 2025
      First, make sure the Schumacher Remote Starter is adequately charged; verify that the charge level is at least 50%. Also, do not attempt to jump start your vehicle more than three consecutive times. If the vehicle still does not start after these attempts, it is recommended to consult a qualified service technician.
  • D
    davisjillianAug 25, 2025
    What to do if the Green LED is blinking, Red LED is off and no beep when connected to Schumacher SL1338?
    • K
      katherine01Aug 25, 2025
      If the green LED is blinking, the red LED is off, and there's no beep when the cable is correctly connected, this indicates that a 'fake' high battery voltage is detected, but reverse charging protection did not activate. In this case, you can turn the key to jump start the vehicle.
  • T
    Thomas NelsonAug 27, 2025
    Why does the last LED flash and turn off on my Schumacher SL1338?
    • H
      hamptonkatherineAug 27, 2025
      If the last LED flashes and then turns off on your Schumacher Remote Starter, it typically indicates an over-discharge. To resolve this, recharge the internal battery.
  • M
    Mr. Bruce MedinaAug 31, 2025
    Why is the green LED blinking and the red LED off when the cable is correctly connected to both the battery and jump starter on my Schumacher SL1338?
    • T
      Timothy LinAug 31, 2025
      This indicates that a “fake” high battery voltage is detected, but reverse charging protection did not activate. You can turn the key to jump start the vehicle.
  • M
    Michael WilliamsSep 3, 2025
    What does it mean when the cable is connected only to the battery and the solid red LED is on, the green LED is off, and the Schumacher SL1338 beeps once per second?
    • K
      Karina WilliamsSep 3, 2025
      This indicates that the vehicle battery voltage is lower than 10.5V. You can connect to the jump starter and turn the key to jump start the vehicle.
  • J
    jacksontonySep 6, 2025
    Why are all four LEDs flashing on my Schumacher SL1338 Remote Starter?
    • Y
      yreidSep 6, 2025
      The LEDs are flashing because of a low or high temperature condition. The LEDs will stop flashing when the temperature condition is corrected.
  • S
    Shannon BarajasSep 10, 2025
    What to do if the last LED flashes and then turns off on my Schumacher SL1338 Remote Starter?
    • A
      Anthony LopezSep 12, 2025
      This indicates an over-discharge. Recharge the internal battery of your Schumacher Remote Starter.

Summary

Important Safety Instructions

General Usage and Handling Safety

Covers reading manual, keeping away from children, avoiding outlet insertion, weather protection, and handling damaged units or modifications.

Attachment and Cable Safety

Focuses on using recommended attachments and safe disconnection of cords to prevent damage or injury.

Additional Safety and Precautions

Preventing Battery Explosions

Instructions on reducing risk of battery explosion, avoiding flammable materials, and not placing unit above battery.

Precautions for Working Near Batteries

Safety measures including no smoking, removing metal items, avoiding dropping tools, and using protective gear.

Handling Battery Acid

Steps for dealing with battery acid contact, including washing, eye flushing, and ingestion procedures.

Lithium Ion Battery Fire Safety

Guidance on extinguishing fires involving the lithium ion battery and cooling the product.

Preparing to Use the Unit

Battery Area Ventilation and Cleaning

Ensuring the battery area is ventilated and cleaning terminals with baking soda and water.

Battery Voltage and Connection Checks

Verifying battery voltage and ensuring tight connections for the unit's cable clamps.

Connecting to a Battery

Connecting Clamps and Cable Placement

Steps for plugging in clamps, attaching cables to battery/chassis, and positioning DC cables safely.

Vehicle Battery Polarity and Grounding

Instructions for identifying battery posts and connecting clamps based on negative or positive grounding.

Disconnecting Cables After Use

Procedure for safely removing clamps from the vehicle chassis and battery terminal.

Features Overview

Unit Components Identification

Lists and identifies the main parts of the jump starter unit and included accessories.

Charging the Jump Starter

Checking Internal Battery Level

How to check the jump starter's battery charge level using the power level LEDs.

Charging the Internal Battery

Procedure for charging the internal battery using a USB charger and cable.

Operating Instructions

Jump Starting a Vehicle Engine

Step-by-step guide for jump starting a vehicle engine with the jump starter.

Charging a Mobile Device

Instructions for using the USB port to charge mobile devices.

Using the LED Light

How to turn on and cycle through the different modes of the built-in LED light.

Maintenance and Storage

Maintenance Instructions

Guidelines for cleaning and maintaining the jump starter unit and its components.

Storage Instructions

Recommendations for storing the jump starter, including temperature and charging frequency.

Troubleshooting and Specifications

Jump Starter Troubleshooting

Common problems with the jump starter and their solutions, including LED indicators.

Smart Cable LED and Alarm Behavior

Explanation of smart cable LED lights and alarms for various connection and protection states.

Product Specifications

Technical details of the jump starter, including battery type, capacity, and output.

Before Returning for Repairs

Repair and Return Information

Guidance on where to find repair services and replacement parts for the unit.

Limited Warranty Information

Details on the one-year limited warranty and how to register the product online.

Schumacher SL1338 Specifications

General IconGeneral
BrandSchumacher
ModelSL1338
CategoryRemote Starter
LanguageEnglish

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