Schumacher SPEEDCHARGE 300A Manuel D’Utilisation

5

It is important to understand the charger’s requirements. This section explains the 

charger’s electrical requirements and how to prepare a battery for charging.
PLUGGING IT IN

Your charger requires a 120V AC electri-

cal outlet installed according to all local 

codes and ordinances.

The use of an extension cord is not 

recommended. If you must use an ex-

tension cord, please make sure that you 

follow these guidelines: 
•  Make sure that pins on plug of exten-

sion cord are the same number, size, 

and shape as those of plug on charger. 

•  Check that the extension cord is 

properly wired and in good electrical 

condition.

•  Make sure that the wire size is large 

enough for its length and for the AC 

ampere rating, as specified in the 

chart below.

25  50  100  150

18

18

16  14

*AWG=American Wire Gauge

Snap any of the three connectors into 

place in seconds:

Connect the clamps to the charger.  

Follow the Operating Instructions to 

connect the output clamps to the bat-

tery.  After a solid electrical connec-

tion is made to the battery, plug the 

power cord into a 120V AC electrical 

wall outlet.

Charge or maintain your battery 

without lifting the hood.  Connect the 

12V adapter to the charger and plug 

into the 12V accessory outlet.  Route 

the power cord from charger through 

the vehicle’s open window and plug 

into a 120V AC electrical wall outlet.  

Make sure to place charger on a dry, 

non-flammable surface, like metal or 

concrete.  

The ring connectors permanently 

attach to the battery providing easy 

access to quickly charge your battery.  

This application is appropriate for 

motorcycles, lawn tractors, ATVs and 

snowmobiles.  To permanently attach 

to a battery, loosen and remove each 

nut from bolts at battery terminal.  

Connect the red POSITIVE ring con-

nector ring to the POSITIVE battery 

terminal.  Connect the black NEGA-

TIVE connector ring to the NEGATIVE 

battery terminal.  Replace and tighten 

the nuts to secure.  Take care to keep 

both wires and plug away from metal 

and the engine hood. Plug the power 

cord into a 120V AC electrical wall 

outlet.