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CHARGING INSTRUCTIONS: 

STEP 1 - Pre Charge Check & Electrolyte Level Check 

 

Check the Battery Electrolyte level (Not required on sealed & Maintenance Free Batteries). 

If necessary, remove the vent caps and add distilled water so the levels are halfway between the 
upper and lower fill lines. 

 

Check the Voltage Output Switch on the charger and make sure it’s on the correct voltage 

 

Slide Switch is selected to GEL position for charge GEL Battery. 

 

Slide Switch is selected to Lead-acid position for charge Lead-acid Battery. 

 

STEP 2 - Connecting the Battery charger to your Battery 

 

If the Battery is 

out of the vehicle

o

 

Connect the Red lead from the charger to the positive (+) battery terminal. 

o

 

Connect the Black lead from the charger to the negative (-) battery terminal. 

 

 

If the Battery is still 

in the vehicle

, determine if the vehicle is positively (+) or negatively (-) 

earthed. 

o

 

If Negatively Earthed (Most Common) – FIRST Connect the Red (+) battery charger 
lead to the positive (+) Battery post and then connect the Black (-) battery charger 
lead to the vehicle’s chassis and away from the fuel line. 

 

o

 

If Positively Earthed – FIRST Connect the Black (-) battery charger lead to the 
Negative (-) battery post and then connect the Red (+) battery charger lead to the 
Vehicle’s chassis and far away from the fuel line. 

 

Summary of Contents for BS20

Page 1: ...GER For lead acid batteries User Manual and Guide to professional battery charging for Starter and Deep Cycle batteries THIS MANUAL CONTAINS IMPORTANT SAFETY AND OPERATING INSTRUCTIONS FOR 12V BATTERY CHARGER BS20 ENGLISH ...

Page 2: ...attery while charging Be extra cautious to reduce risk of dropping a metal tool onto battery It might spark or short circuit battery or other electrical part that may cause explosion When working with a lead acid battery remove personal metal items such as rings bracelets necklaces watches NEVER smoke or allow a spark or flame in vicinity of battery or engine Do not charge non rechargeable batteri...

Page 3: ...ad electronic circuit When the charger is overheated the charger will shut down shortly If temperature is decreased the charger will resume to normal charging OVERLOAD PROTECTION The charger employs the use of a Solid State Circuit Interrupter that opens under severe overload This condition may occur if attempting to charge any severely discharged or heavily sulfated battery Once the Interrupter o...

Page 4: ...y Manufacturer when charging batteries with small capacity Charge Current 2A Battery Capacity Charging 4 80AH Battery Capacity Maintaining 4 120 AH ELECTRICAL PARTS Delivered with A C Power Cord o 6 feet with VDE Plug Output Lead o 4 feet with Trailer Connector Extension Cord o 2 feet with Trailer Connector Battery Clamp or o 2 feet with Trailer Connector Ring Connector ENVIRONMENTAL CHARACTERISTI...

Page 5: ...the Battery charger to your Battery If the Battery is out of the vehicle o Connect the Red lead from the charger to the positive battery terminal o Connect the Black lead from the charger to the negative battery terminal If the Battery is still in the vehicle determine if the vehicle is positively or negatively earthed o If Negatively Earthed Most Common FIRST Connect the Red battery charger lead ...

Page 6: ...es to the NORMAL Charging Mode automatically There are 3 stages o Bulk Charging Mode C C Mode Charging Green LED is flashing The battery can be charged about 80 The charger delivers an almost constant current 2A until the battery voltage reaches the set value o Absorption Mode C V Mode Charging Green LED is flashing The battery can charge up to almost 100 The charging current tapers and the chargi...

Page 7: ...e up to almost 100 The charging current tapers and the charging voltage is kept constant at the set value o Maintenance Mode Float Mode The Float Mode allows the charger to effectively be left connected to your batteries over the course of a season without overcharging your batteries and maintains your battery s full charge The Float Mode also contains a special charging waveform that pulses power...

Page 8: ...witched ON LED Status Descriptions Power LED RED Red ON AC Power is connected Red Flash Short Circuit or Polarity Reversed Recovery LED YELLOW RED Yellow Red Alternative Flash Battery Recovery mode is in progress Red ON Battery Recovery Fail Charging LED GREEN Green Flash Bulk Charging CC Mode Absorption Mode CV Mode Green ON The charger is at Float mode Full CHARGING CURVE VOLTAGE Power LED Recov...

Page 9: ...ated Battery has a damaged cell Overheat protection mode Check the Battery condition age etc Battery may need replacement Move battery Charger to cooler environment Long charging time Full light does not come on Error RED LED is Flashing Battery capacity too large Battery is defective Check the charger specification matches the battery capacity Battery cannot be charged and must be replaced MAINTE...

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