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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 OR ATTEMPT TO 
DO INTERNAL REPAIRS.  THIS VOIDS THE WARRANTY.   

Assembling 

the charger incorrectly may result in the risk of electric shock or create a 
fire hazard.

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

Battery Tender® Solar 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 

Battery Tender® Solar Charger 

to charge these types of batteries.  The 

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dry-cell battery warning is intended for rechargeable or 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 connecting the charger to the solar panel, 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 charger’s Input Leads to the solar panel. 

WARNING   

IF THE BATTERY REMAINS INSTALLED IN THE VEHICLE: 

1.

  DO NOT CONNECT THE CHARGER’S INPUT LEADS TO THE 

SOLAR PANEL UNTILL ALL OTHER CONNECTIONS ARE MADE!

2.

  Place both the INPUT and OUTPUT DC power cords in the best 

position to avoid accidental damage by movable vehicle parts, i.e. 
hoods, doors, or moving engine parts (fan blades, belts, or pulleys).

3.

  Check the polarity of the battery posts.  If the positive (pos, p, +) post is 

connected to the vehicle chassis, then the vehicle has a positive 
ground system.  If the negative (neg, n, -) post is connected to the 
vehicle chassis, then the vehicle has a negative ground system.  
Negative ground systems are the most common.

4.  For negative ground systems, connect the positive (red) alligator clip, 

or ring terminal to the positive battery post.  Then connect the negative 
(black) alligator clip, or ring terminal to the vehicle chassis. Do not 
make the negative charger clip or ring connection to the carburetor, 
fuel lines, or thin, sheet metal parts. Make that connection to the 
engine block or a heavy gauge metal part of the frame. 

5.  For positive ground systems, connect the negative (black) alligator clip, 

or ring terminal to the negative battery post.  Then connect the positive 
(red) alligator clip, or ring terminal to the vehicle chassis. Do not make 
the positive charger clip or ring connection to the carburetor, fuel lines, 

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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