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Will a car battery charger ruin my battery if I accidentally reverse the cables while charging?
Wiki User
∙ 13y ago
Yes it will damage your battery if you reverse the cables. There is an article on Wikipedia about it at this link http://en.wikipedia.org/wiki/Rechargeable_battery.
Wiki User
∙ 13y ago
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Is it possible to accidentally reverse the polarity of a 12 volt battery?
Yes it is possible, the most common way is the battery is very very drained, then you hook up the charger - to + and + to - . then it will take a while but it will do it. I do not recommend you try it as it can wake up half way thru reverse charging and explode.
If you connect a battery for charging in reverse connection will it get charged or not how about the efficiency of the battery?
If you reverse the connection of the battery charger you will discharge the battery. You may be able to correct the connection and charge it properly, or the battery may be ruined.
Where can I get the best car battery charger possible?
The Deltran Supersmart Battery Tender is the optimal choice in battery chargers for cars. It switches from a full charging mode to a float charging mode to ensure that battery is kept at maximum, it has a reverse polarity protection to ensure the user cannot be harmed, and it comes backed by a 10-year-warranty. You can buy it on amazon.com for approx. $43.
How to charge a dc battery with ac output?
The best way to charge a battery from an AC source is to use a high-quality commercial battery charger that is of the correct voltage and charging profile for your battery. By "charging profile," I mean a charger that is matched to the battery's chemistry and amp-hour capacity. WARNING: Not every type of battery is rechargeable, and even rechargeable batteries can do nasty things if they are not charged properly. If you are not sure you have the right charger, please ask someone for help. If you want to make your own charger, the answer to "how" depends upon the AC source, the kind of battery, and how "good" a charger you want to make. At a minimum, you need some kind of rectification of your AC power. Your battery will tend to discharge during the part of the cycle where it is not reverse-biased, so you will need something like a diode to make sure the battery can't drain itself back into the charging circuit. Cheap chargers for car batteries, for example, are sometimes nothing more than a transformer (to convert the mains voltage down to something suitable for the battery) and a rectifier (two or four diodes). More sophisticated charger circuits are used to maximize battery life (heat from recharging can damage batteries, so charging circuits use various strategies to control the heat) and to provide the appropriate charging profile for the battery chemistry. You'll see a pretty dramatic shortening of the life of your batteries if you don't use a specialized circuit to charge some kinds of batteries. For this reason, you may want to use a commercial charger. If you really want to build a charger, try to get a kit or build from a known-good circuit.
What happens when you charge a car battery on the wrong polarity?
You can't recharge it hooked up in reverse. You will destroy the battery or the charger if you try it.
When you connect the battery charger to the batterythe charger first sees voltage from the battery. How then is charged reversed to enter the battery?
well, most battery chargers can discern the anode and the cathode, when first charge the battery, the convertor of the charger transform the alternating current (AC) into Direct current(DC), that means the charger "sees" the voltage of the battery, in fact, most charger can transform the AC to one/some fixed DC Voltages. and if you reverse to enter the battery, it doesn't matter, the battery can be normally charged, this case was considered when designing the charger, don' t be worry.
How do you charge a dead battery on an Intrepid?
Same applies to all cars. A battery charger will be the best way, it slow charges the battery over along period of time, say 24 hours. Batteries only last about 4-5 years, so always check manufactures label on battery and charger, and charge in temperatures over 40 degrees F.. Charging should be done with cables off so not to damage computer. Charging a dead battery is passing current from positive to negative, instead of the reverse when it's slowly discharging. This changes the electrolyte level to its original state of charge. Again, the slow charging method as described above is the best. And don't forget to check electrolyte level on non maintenance free batteries.
What if your fone is on a charger and its has a battery in it but it saids no battery?
The battery is not making good contact or has been installed in reverse. Remove the battery and clean ther terminals with a pencil eraser. Reinstall the battery making sure you install it correctly.
How does a car battery polarity change into reverse polarity?
Car battery polarity can only reverse if the battery is completely dead and then charged with the neg. and pos. leads of the charger are reversed. This is very dangerous as hydrogen gas which is given of buy a dead battery may explode and cause personal inguiry.Likewise if the car's battery cables are accidently reversed while the battery is dead. Regards - S.S.
If your charging a dc battery and reverse the leads what will happen to the battery A- trickle charge B- drain or discharge C- explode?
Both B and C. DC is polarity specific, by reversing polarity with a charger you are causing current to flow backwards through the battery (internal) this could cause the electrolyte to heat up giving off a gas that expands and could eventually cause the battery to explode or just crack and leak. Most electrolytes in batteries are corrosive.
Why do your headlights only come on when shift lever is in drive or reverse?
Some newer cars do this so that you cannot accidentally leave your lights on and run down your battery.
How does a battery charger charge a battery?
what kind of batteries do you have?? if the mobile phone's battery, just put in your phone. If it's car battery, just connect the red cable to positive, black cable to negative plates. on rechargeable alkaline type batteries the charger should have a plus and negative sign on it. usually the neg end is the one with the spring. the flat end of the battery is usually negative.
