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3.

CHARGER IS CHARGING BUT THE GREEN LED DOES NOT ILLUMINATE IN 

A REASONABLE AMOUNT OF TIME:  

The battery may be large and requires more 

time to fully charge than originally expected, there may be another appliance drawing 
electric power from the battery while it is charging, or the battery may be defective.  Also, a 
newly purchased battery may not be fully charged and may take longer to charge initially. 

4.

THE LED REVERTS TO ILLUMINATING AMBER AFTER TURNING GREEN.

There may be another appliance drawing electric power from the battery causing its voltage 
to drop below the reset level.   The battery charger then goes back into full charge mode.  
Also, the charger connections at the battery may be intermittent or the battery may be 
defective.

SPECIFICATION SUMMARY:

Technical Specifications 

 

BT Solar Jr. 

BT Solar 5W 

BT Solar 10W

BT Solar 15W

Input Voltage (Maximum) 

32.0Vdc N/A 

N/A N/A 

Input Current (Maximum) 

  3.0Adc 

N/A 

N/A N/A 

Output Voltage (Nominal) 

12Vdc 

Output Current (Maximum) 

3.0Adc 270mAdc 540mAdc 830mAdc 

Specific Charger Output Voltage & Current Amplitudes throughout the 
entire charge algorithm, including absorption and float maintenance, are 
consistent with the optimum charging recommendations of major lead-acid 
battery manufacturers.

Maximum Operating Temperature

50

q

C Typical

Charger Case Dimensions: 

BT Solar Jr.:

   4.0 in (100 mm) L 

x

2.5 in (63 mm) W 

x

 .75 in (19 mm) H. 

BT Solar + Panel Dimensions:

BT Solar 5W:   

16 in (406.5mm) L x 16 in (406.5mm) W x 1 in (25.5mm) H 

BT Solar 10W: 

16 in (406.5mm) L x 29 in (736.5mm) W x 1 in (25.5mm) H 

BT Solar 15W: 

16 in (406.5mm) L x 41 in (1041.5mm) W x 1 in (25.5mm) H 

Note:  When sizing the space available for the battery charger, do not forget to 
allow additional length for safe bending of the strain relief on the DC input and 
output power cords, typically 2 in (50.8 mm).

Shipping Weight:

 with Accessories:

BT Solar Jr.:

     Approx. 0.2 lbs (0.1 kg)

BT Solar 5W:       

Approx. 3.0 lbs (1.4 kg)

BT Solar 10W:     

Approx. 5.5 lbs (2.5 kg)

BT Solar 15W:

    Approx. 8.0 lbs (3.7 kg)

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Design Conformance & Revision: 

 All charger products are 100% inspected and 

electrically tested prior to shipment. All battery charger designs are proprietary and 
subject to change without notice.  Manufacturer makes no specific claims nor does 
it either make or imply any specific guarantee or warranty with respect to either the 
physical configuration or performance of any of the battery charger products listed 
herein, including suitability for purpose or merchantability. 

DELTRAN CORPORATION 

801 E International Speedway Blvd. 

DeLand, Florida 32724 

Phone 386-736-7900 FAX  386-736-0379 

www.batterytender.com 

Summary of Contents for Battery Tender Solar Junior

Page 1: ...GE 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 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 const...

Page 2: ...kaline 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...

Page 3: ...arge automotive or marine deep cycle type batteries may take several days to fully recharge 6 WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY LOW VOLTAGE If you try to charge a dead battery having a voltage below 3 Volts the BATTERY TENDER charger will not start to charge because an internal safety circuit prevents the battery chargers from generating any DC output voltage NOTE If a 12 Volt L...

Page 4: ...recommendations of major lead acid battery manufacturers Maximum Operating Temperature 50 qC Typical Charger Case Dimensions BT Solar Jr 4 0 in 100 mm L x 2 5 in 63 mm W x 75 in 19 mm H BT Solar Panel Dimensions BT Solar 5W 16 in 406 5mm L x 16 in 406 5mm W x 1 in 25 5mm H BT Solar 10W 16 in 406 5mm L x 29 in 736 5mm W x 1 in 25 5mm H BT Solar 15W 16 in 406 5mm L x 41 in 1041 5mm W x 1 in 25 5mm H...

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