Power Up

• 1). Position the battery charger next to the battery to be charged, but do not plug the charger into an outlet yet.
  
  
• 2). Put on safety glasses. Attach the charger's red positive clamp to the positive battery terminal.
  
  
• 3). Attach the charger's black negative clamp to the negative battery terminal.
  
  
• 4). Plug the charger into an electrical outlet. If there is a power button on the charger, turn it on. Some models are always on once plugged in.
  
  
• 5). If the charger has amp settings for different battery types, choose the appropriate volt setting. Some models only charge at the standard 12 volts for auto batteries.
  
  

Read the Gauge

• 1). Examine the battery charger gauge to find out how much life is left on the battery. Some models show a percentage of how much of a charge the battery requires to achieve full power.
  
  
• 2). Keep the charger charging the required time to achieve full power. Some models indicate this with lights that flash once the ideal amount of charge is reached. Other models have timers that tick down until the battery is 100 percent charged.
  
  
• 3). Once the battery is charged, turn off the charger and/or unplug the charger from the electrical outlet.
  
  
• 4). Remove the negative clamp from the negative terminal.
  
  
• 5). Remove the positive clamp from the positive terminal.