Important Safety Instructions
WARNING – RISK OF EXPLOSIVE GASES
Working in the 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.
To reduce risk of battery explosion, follow these instructions and those published by the battery manufac-
turer of any equipment you intend to use in vicinity of battery. Review cautionary markings on these products
and on engine.
A. GENERAL BATTERY SAFETY
1. Before you use your battery charger, read and follow all
instructions and cautions printed on:
• Battery Charger
• Unit using battery
2. Use battery charger on Flooded Wet Cell, Maintenance Free
and Starved Electrolyte batteries only. Charger is not intended
to supply power to low-voltage electrical system other than
for charging and maintaining batteries.
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 manufacturer.
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
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 professional
when service or repair is required. Incorrect reassembly 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
• 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
• Wire size is large enough for AC ampere rating of charger,
as specified below:
Length of cord (feet): 25 50 100
AWG size of cord: 16 14 12
11. Always charge battery in a well-ventilated area.
NEVER operate in a closed-in or restricted area without
12. Locate charger as far away from battery as DC charger cables
13. NEVER charge a frozen battery. If battery fluid (electrolyte)
is frozen, bring into a warm area to thaw before charging.
14. NEVER allow battery acid to drip on charger when reading
specific gravity or filling battery.
WARNING: Battery chargers get hot during operation and
must have proper ventilation. Air needs to flow around the
charger. Do not set on flammable items like carpeting,
upholstery, paper, cardboard, etc. Will damage leather and
melt plastic and rubber.
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.
#SS-210A and SE-210A
Fully Automatic Onboard Battery Charger
For One 12-Volt Battery At 10 Or 20 Amps
Or Two 12-Volt Batteries At 10 Amps
For 12V And 24V Battery Systems
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