-connect your charger to the car battery. if you have jumper cables, use them too.
-start the engine on the car if it turns over so start disconnecting one or two jumper cables at a time. make sure to remove all of them before you get back to adding any more! if it doesn't turn over, leave it alone for now and move on until next step.
-once the cables are off, connect your battery charger's crocodile clips or terminals with positive (+) to positive (+) and negative (-) to negative (-). test again by trying to start engine while checking if lights in house are working –if everything's looking good there should be some spark when cranking engine but only when
how can i charge my dead car battery at home?
if you have a voltage tester, confirm whether the voltage of the terminals from starter to alternator is 12 volts. if no, then your car will not be able to start and it will need transporting to a car repair shop.
it's best that you wait until morning before taking any action as waiting for several hours may restore enough charge in the battery overnight. alternatively, if this is an emergency and you find yourself with a dead battery at 2am outside your house (which would probably be pretty hard on your spouse or neighbors!), there are still some things you can do. you can attach the black lead from the jumper cable to one of the exposed posts with exposed metal; make sure its attached securely! then attach one
what is the best way to charge a car battery?
the best way to charge a car battery is by using a charger, so long as the charger's voltage matches what is on the battery. alternately, if you are looking for an easy solution to charge your car battery without having to pay for a new factory-installed one, you can keep it running with jumper cables. be sure that preferably each end of the cable has another car or other power source. you may also need attendant help for this technique.
## do not mention anything about maintaining amps
can you charge a car battery with a wall outlet?
i am a car guy, so it's hard for me to determine definitively. what i can tell you is that charging a battery with an outlet will take many hours and the voltage from the wall outlet will never be as high as what goes into your car battery, which is ~12 volts.
based on what i have read, the average recharge time would be about 360 hours (~7 days). you would then need to maintain your charger-battery connection long enough for this process to finish – seven days again – before disconnecting it from the wall socket. charging through a 12 volt/10 amp system would require three amps of current at 12 volts or 36 watts of power delivered continuously over approximately four minutes.
how can i charge my battery at home?
the easiest way to charge your battery at home is through a wall socket. simply plug the charger into the power outlet, and connect the other end of the charger to your phone's charging port. charging can take anywhere from 20-30 minutes, depending on how depleted your battery is.
cordless chargers are convenient for people who would rather not be tied down by wires or plugs, but often yield less than satisfactory results because they only put out 1a or less per hour. if you're someone who travels often and needs an up-to-date device with juice enough to last more than a few hours before needing to be charged again, it may be worth investing in a corded charger that will supply 2a