Schumacher DY-1420 User Manual

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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

batteries  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 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 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 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

that:

• Pins on plug of extension cord are the same number, size,

and shape as those of the plug on the 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:

11.  Always charge battery in a well ventilated area.

 

NEVER operate in a closed-in or restricted area without 

adequate ventilation because of risk of explosive gases.

 

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.

00-99-000757/0607

WARNING: Handling the cord on this product or cords associated with accessories old with this product, may exposed 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.

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.