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Power Tender Plus

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Models 

12V6A & 24V3A 

 

IMPORTANT SAFETY INSTRUCTIONS 

SAVE THESE INSTRUCTIONS:

 

 

This manual contains 

important safety and operating instructions for the DELTRAN 
BATTERY TENDER® VRW Power Tender Plus Battery Chargers, both 
12V6A and 24V3A models. 

CAREFULLY READ THESE 

INSTRUCTIONS BEFORE USING THE BATTERY CHARGER. 

 

WARNING AND CAUTION LABEL DEFINITIONS: 

 

WARNING     

WARNING indicates a potentially hazardous situation, which, if not 
avoided, could result in serious injury or death.

 

CAUTION     

CAUTION indicates a potentially hazardous situation, which, if not 
avoided, may result in minor or moderate injury.

 

CAUTION     

CAUTION used without the safety alert symbol indicates a 
potentially hazardous situation that if not avoided, may result in 
property damage. 

 

GENERAL PRECAUTIONS 

 

CAUTION     

WORKING WITH LEAD ACID BATTERIES AND BATTERY CHARGERS:  

All 

lead acid batteries have the potential to emit gasses that may combine into a 
combustible or explosive mixture.  In many cases, it is possible that lead acid 
batteries will emit these gasses during normal discharge and charging 
operations.  Because of this potential danger, it is important that you follow the 
precautions recommended by both the battery and battery charger 
manufacturers before using either one. 

USING MANUALS:  

Study all of the battery manufacturer's precautions and 

specific recommendations for safe operation such as not removing cell caps 
while charging and the recommended rates of charge (charger output current). 
 

Deltran Battery Tender

 

WATERPROOF 

VIBRATION RESISTANT (VRW) 

Battery Chargers 

 

CAUTION     

CHARGER LOCATION:  LOCATE 

the charger as far away from the battery as 

is allowed by the length of the output cable harness.

  NEVER 

set the charger 

above the battery.

  NEVER 

set the charger on a surface constructed from 

combustible material. 

CHARGER VOLTAGE COMPATIBILITY:  NEVER 

use a battery charger 

unless the battery voltage matches the output voltage rating of the charger. 
For example, do not use a 12-volt charger with a 6-volt battery and vice-versa. 

EXCESSIVE MOISTURE:

  The charger body and power cords are fully 

waterproof.  However, do not expose the AC and DC electrical connections at 
the ends of the power cords to rain or snow. 

CHARGER ATTACHMENTS:  

Do not use attachments that are not 

recommended or sold by Deltran or its affiliates.  To do otherwise may result in 
the risk of electric shock, fire, or possibly some other unforeseen potential 
personal injury situations. 

HANDLING POWER CORDS:

  When handling electric power cords, always 

pull by the plug rather than by the cord.  This will reduce the risk of damage to 
both the plug and cord, and it will minimize the likelihood of electric shock 
resulting from that damage. 

LOCATION OF POWER CORDS:

  Make sure all electric power cords are 

located so that they cannot be stepped on, tripped over, or otherwise 
subjected to damage or stress. 

MONITORING SEALED & NON-SEALED BATTERIES:

  When leaving a 

battery charger connected to either a sealed (AGM or GEL) or non-sealed 
(flooded battery) for  extended periods of time (weeks, months, etc.), 
periodically check the battery to see if it is unusually warm.  This is an 
indication that the battery may have a weak cell and that it could go into a 
thermal runaway condition.  If the battery releases an excessive amount of gas 
or if the battery gets hotter than 130

°

F (55

°

C) during charging, disconnect the 

charger and allow the battery to cool.  Overheating may result in plate 
distortion, internal shorting, drying out or other damage.  For flooded batteries, 
also check individual cell fluid levels against manufacturer's recommendations 
for safe operation. 

 

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. 

 

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