Connecting a Charger to a Battery: Positive Side Matching

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SUMMARY

When connecting a charger to a battery, it is essential to connect the positive side of the charger to the positive side of the battery to ensure proper charging. Using a Fluke multimeter can help identify the positive side of the charger and trace the connections accurately. Reattaching wires correctly after they have been pulled off is crucial to avoid damage to both the battery and the charger. Following the manufacturer's instructions is vital for safe charging practices.

PREREQUISITES
  • Understanding of electrical polarity
  • Familiarity with using a Fluke multimeter
  • Basic knowledge of battery charging principles
  • Awareness of safety practices when working with electrical components
NEXT STEPS
  • Research proper techniques for reattaching battery charger wires
  • Learn about battery maintenance and care
  • Explore safety guidelines for charging batteries
  • Investigate common issues with motorcycle battery chargers
USEFUL FOR

This discussion is beneficial for motorcycle owners, hobbyists working with batteries, and individuals interested in electrical safety and maintenance practices.

nutsandbolts
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My son pulled the wires off of the charging plug for his motorcycle (mini-bike).
I can use a Fluke to determine what side is positive coming from the charger, and trace the positive side from the battery to the charging socket.
My question is when charging do I connect the positive side of the charger to the positive side of the battery?
 
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nutsandbolts said:
My son pulled the wires off of the charging plug for his motorcycle (mini-bike).
I can use a Fluke to determine what side is positive coming from the charger, and trace the positive side from the battery to the charging socket.
My question is when charging do I connect the positive side of the charger to the positive side of the battery?

Welcome to the PF.

Yes, that is how you connect a charger. Just think about how you jump start a dead battery...
 
Confirm what Bman states...yes
 
Thank you. My original thought was that when connected and power is drawn out then the battery is connected positive to positive and negative to the frame. If I then want to put power back in then I need to go in the oposite direction, WRONG again.
I understand your explanation of jumping a flat battery.
My only other question is "Where is my soldering iron"? or better still "how do I keep my teenage sons away from my tools"? You can't help with these questions, but thanks for your help with the polarity issue.
 


Yes, it is important to connect the positive side of the charger to the positive side of the battery when charging. This ensures that the electrical current flows in the correct direction and charges the battery properly. If the wires were pulled off the charging plug, it is important to make sure they are reattached correctly to avoid any potential damage to the battery or the charger. Using a Fluke to determine the positive side can help ensure the correct connection. It is always important to follow the manufacturer's instructions when charging any type of battery to ensure proper and safe charging.
 

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