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WARNING     

ELECTRIC SPARK & OPEN FLAME:  NEVER

 smoke or allow a source of 

electric spark or open flame in the vicinity of the battery or engine. (For 
example:  Don't charge the battery next to a gas water heater.) 

VENTILATION:

  Do not operate the charger where ventilation is restricted.  

The intent here is to allow sufficient airflow to minimize and dissipate the heat 
generated by the charger and to diffuse the gasses that may be emitted by the 
battery.   

CHARGER MAINTENANCE: 

 

NEVER

 disassemble the charger or attempt to 

do internal repairs.  Take it to a qualified service technician.  Assembling the 
charger incorrectly may result in the risk of electric shock or create a fire 
hazard. 

 

WARNING     

EXTENSION CORDS:

  An extension cord should not be used unless 

absolutely necessary. Using improper extension cord could result in a risk of 
fire and electric shock. If extension cord must be used, make sure that: 

 

The pins on the extension cord plug have the same number, size, and 
shape as those of the AC power cord plug on the charger; 

 

The extension cord is properly wired and is in good electrical condition; 
and 

 

The

 

wire size is as specified in Table 1 below.   

 

TABLE 1:  EXTENSION CORD  

LENGTH & MINIMUM SAFE CONDUCTOR SIZE 

              Note:  The smaller the AWG number, the larger the conductor diameter. 

  Length of Cord  (feet) 

 

6 to 100 

 101 to150  

  Length of Cord  (meters)             1.8 to 30.5 

30.8 to 45.6

 

  Size of Conductor  (AWG) 

     18    

      16 

  Conductor Diameter  (mm) 

    1.25                   1.5 

 

PERSONAL PRECAUTIONS 

 

WARNING     

WHEN YOU WORK NEAR LEAD-ACID BATTERIES: 

1.  Someone should be within range of your voice or close enough to come to 

your aid if you have an accident; 

2.  Have plenty of fresh water and soap nearby in case battery acid contacts 

skin, clothing, or eyes; 

3.  Wear complete eye protection and protective clothing. Avoid touching your 

eyes while working near a battery.  If battery acid contacts your skin or 
clothing, wash immediately with soap and water. If acid enters an eye, 
immediately flood the eye with running cold water for at least 10 minutes 
and get medical attention as soon as possible; 

4.  Be extra cautious when handling metal tools around a battery.   If you drop 

 

a metal tool near a battery it might spark or create a short circuit between 
the battery terminals and some other metal part.  Either event may cause 
a dangerous electrical shock hazard, a fire, or even an explosion; 

5.  Remove all personal metal items such as rings, bracelets, necklaces, and 

watches when working with a lead-acid battery. A lead-acid battery can 
produce a short-circuited current high enough to weld a metal ring or other 
piece of jewelry, causing a severe burn; 

6.  Use the Waterproof Deltran Battery Tender

 International Battery 

Chargers for charging lead-acid batteries only.  They are not intended to 
supply power to an extra low-voltage electrical system or to charge dry-cell 
batteries. Charging dry-cell batteries may cause them to burst and cause 
injury to persons and damage to property; 

INFORMATION NOTE ABOUT DRY-CELL BATTERIES: 

There are some wet, non-spillable, lead acid batteries on the market whose 
manufacturers' make the claim that they are dry-cell batteries. These batteries 
are sealed, gas-recombinant, starved electrolyte, possibly with AGM 
(Absorbed Glass Mat) type construction.  It is perfectly safe to use the 
WATERPROOF DELTRAN BATTERY TENDER® INTERNATIONAL 
BATTERY CHARGERS to charge these types of batteries.  The dry-cell 
battery warning is intended for non-rechargeable, alkaline and other similar 
types of batteries.  If you have any doubt about the type of battery that you 
have, please contact the battery manufacturer before attempting to charge the 
battery. 
7. 

NEVER

 charge a visibly damaged or

 

frozen battery. 

 

PREPARING TO CHARGE:  

First, follow all General & 

Personal Precautions as previously explained, and then 

continue. 

 

WARNING     

 

IF THE BATTERY MUST BE REMOVED FROM THE VEHICLE: 

1.  To avoid an electric arc (or spark), turn off or disconnect all of the 

accessories in the vehicle. Then always remove the cable that is 

connected to grounded terminal from battery first; 

2. 

If necessary, clean the battery terminals. Be careful to keep the corrosion 

and other debris from coming in contact with your eyes;

 

3. 

If the battery is not a sealed battery, then if necessary, add distilled water 

to each cell until the battery acid solution reaches the level specified by 

battery manufacturer. Do not overfill;

 

4.  Before inserting the charger AC power plug into the electrical outlet, check 

the polarity of the battery posts, and

 

attach at least a 24 inch long 6 (AWG) 

insulated, battery extension cable to the negative battery post. Then 

connect the appropriate charger DC output connectors to the battery and 

the extension cable, positive to positive and negative to negative. Never 

allow the alligator clips or terminal rings to touch each other after they are 

connected to the battery charger. 

5.  Connect the AC power plug to the electrical outlet. 

 

 

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