Schumacher SE-2151MA User Manual

1
1. Before you use your battery charger, be sure to read all
instructions and cautions printed on:
• Battery Charger
• Battery
• Vehicle or unit using battery
2. Use battery charger on LEAD ACID type rechargeable bat-
teries only, such as used in autos, trucks, tractors, airplanes,
vans, RV's, trolling motors, etc. Charger is not intended to
supply power to low-voltage electrical system other than in
an automotive application.
WARNING: Do not use battery charger for charging dry-
cell batteries that are commonly used with home appliances.
These batteries may burst and cause injury to persons and
damage to property.
3. Use only attachments recommended or sold by manufac-
turer. Use of non-recommended attachments may result in
fire, electric shock, or injury.
4. When disconnecting the battery charger, pull by the plug
not by the cord. Pulling on the cord may cause damage to
cord or plug.
5. Locate battery power cord so it cannot be stepped on, tripped
over, or subjected to damage or stress.
6. Do not operate charger with damaged cord or plug. Have
cord replaced immediately.
7. Do not operate charger if it has received a sharp blow, been
dropped, or otherwise damaged in any way. Take it to a
qualified professional for inspection and repair.
8. Do not disassemble charger. Take it to a qualified profes-
sional when service or repair is required. Incorrect reas-
sembly may result in electric shock or fire.
9. To reduce risk of electric shock, unplug charger from outlet
before attempting any maintenance or cleaning.
10. Do not use an extension cord unless absolutely necessary.
Use of an improper extension cord could result in fire or
electric shock. If an extension cord must be used, make
sure that:
• Pins on plug of extension cord are the same number,
size, and shape as those of plug on charger.
• Extension cord is properly wired and in good electrical
condition.
• Wire size is large enough for AC ampere rating of charger,
as specified below:
Length of cord (feet): 25 50 100 150
AWG size of cord: 16 14 10 8
11. Always charge battery in a well ventilated area.
NEVER operate in a closed-in or restricted area without
adequate ventilation.
WARNING: Risk of explosive gas.
12. Locate charger as far away from battery as DC charger
cables permit.
13. Do not expose charger to rain or snow.
14. NEVER charge a frozen battery. If battery fluid (electrolyte)
is frozen, bring into a warm area to thaw before charging.
15. NEVER allow battery acid to drip on charger when reading
specific gravity or filling battery.
16. NEVER set a battery on top of charger.
17. NEVER place charger directly above battery being charged.
Gases from battery will corrode and damage charger.
18. NEVER touch the battery clips together when the charger
is energized.
00-00-000629/0103
SCHUMACHER ELECTRIC CORPORATION
801 BUSINESS CENTER DRIVE • MOUNT PROSPECT, ILLINOIS 60056-2179
Send Warranty Product Repairs to: 1025 E. Thompson, Hoopeston, IL 60942-0280
Call Customer Service if you have questions: 1-800-621-5485
Read Rules for Safe Operation and Instructions Carefully
Working in vicinity of a lead-acid battery is dangerous. Batteries generate explosive gases during normal
battery operation. For this reason, it is of utmost importance that each time before using your charger, you
read this manual and follow the instructions exactly.
Owner's Manual
–Save–
Important Safety Instructions
WARNING: Handling the cord on this product or cords associated with accessories sold with this product, will expose you to lead, a
chemical known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.
SE-2151MA
15/2/100 Amp
Automatic Battery Charger
With Engine Start
Battery
Charger
Models:
A. GENERAL BATTERY SAFETY

Schumacher SE-2151MA Specifications

General

Type	Automatic Battery Charger
Input Voltage	120V AC
Input Frequency	60Hz
Maintain Rate	2A
Clamps	Heavy-duty
Microprocessor Controlled	Yes
Reverse Hook-Up Protection	Yes
Charge Rate	2A
Battery Type	AGM, Gel
Cable Length	6 ft.
Output Voltage	6V / 12V

Summary

Important Safety Instructions

General Battery Safety

Essential guidelines for safe handling and operation of battery chargers with lead-acid batteries.

Battery Type and Usage Restrictions

Use only lead-acid batteries; do not use dry-cell batteries.

Charger Handling and Maintenance

Proper unplugging, cord care, and avoiding damage or disassembly.

Safe Charging Environment

Ensuring ventilation, avoiding moisture, and proper placement around batteries.

Extension Cord Usage

Guidelines and specifications for using extension cords with the charger.

Personal Precautions and Preparation

Personal Safety Measures

Protect eyes, have aid, use soap/water for acid, avoid eye contact, remove metal items.

Preparing the Battery for Charging

Clean terminals, check/add water, follow manufacturer guidelines.

Grounding and Electrical Connection

Proper AC cord connection and grounding for safety.

Meter and Switch Functions

Battery Type and Operation Selector

How to select battery type (Regular/Deep Cycle) and operation mode.

Charge Rate Options

Details on available charge rates and their uses (6V, 12V, Engine Start).

Understanding the Meter and Indicators

Explanation of the DC Amps meter and indicator lights.

Engine Start Procedure

Step-by-step guide for using the 100 Amp engine start function.

Operating Instructions

Charging Battery in Vehicle

Steps for connecting and charging a battery while it's installed in a vehicle.

Charging Battery Out of Vehicle

Procedure for safely charging a battery that has been removed from a vehicle.

Charge Period and Troubleshooting

Charge Period Estimation

Calculating the approximate time required to bring a battery to a full charge.

Troubleshooting Common Issues

Diagnosing and resolving problems like no meter reading or charger not turning on.

Limited Warranty Information

Details on the product warranty, coverage, and limitations.