how to charge a battery with another battery
May 22, 2015 #6 alfacliff said: Charging your battery. One of these other methods is charging the battery with another car. Powering 5V devices directly from the 12V battery, using the 7805, is inefficient as well but would be better. When the charge is finished, turn off or unplug the charger and remove the clamps in reverse order (black first, then red). Figuring Out the Real Problem These charging devices are designed to feed electricity into a dead battery at the rate necessary to safely and deeply charge … When the battery is fully charged, shut off the charger and unplug it. Ensure the charger is situated away from the battery and switch the charger on to commence charging. Like Reply. Joined May 22, 2015 4. Two things are needed to charge a battery. For years, RVs have done this--charging a "house" battery for use when the engine was off by using a battery isolator that allows the charge, but also protects your main battery. You can also consider jump starting your car by connecting your battery to another car and revving the engine to slowly charge the dead car until the battery can keep it running. Charging at too hight a rate however can overheat and damage the battery. If you’re using a permanent trickle charger or battery maintainer, you can leave it attached full-time as long as you need to. Then remove the cables, unhooking the negative (black) clamp first. The power pack has a 3.7 volt lithium battery, like the one in your phone (but of a larger capacity). To reduce the chances of this happening, charge at a You need to put the charge back in using one of two methods virtually anyone can successfully complete – using a car battery charger or jumpstarting your battery from another running vehicle. it’s possible. Charging one battery from another is certainly possible but it's very inefficient. The power pack has a DC-to-DC converter to change 3.7 volts at 3 amps to 5.0 volts at 2.1 amps at the micro “B” connector to charge your phone. Turn on the battery charger and begin the charge. Ensure the charger is switched off, then you should connect the red positive (+) lead to the positive (+) terminal on your battery. hmx66. Charging battery with another car. For traditional car batteries (not electric car varieties), the process is essentially the same regardless of your battery type or choice of charger. All you need is the jumper cables and a running car. H. Thread Starter. Always connect the black negative (-) lead to the negative (-) terminal on the battery last. OTHER WAYS TO CHARGE YOUR CAR BATTERY. The more current we can push into a battery, the faster we can charge it. A car battery charger is not the only way to go. The other possibility is to bring a backup battery with 2 or three times the mAhr rating of your original battery and this with the use of a converter to raise the voltage to a charging level will allow you to fully charge your original battery. A voltage source strong enough to move current through a battery, and time. With a seriously depleted battery, the best thing to do either before or immediately after a jump-start is to connect it to a dedicated battery charger. If you do not have an inverter at your home, you may go for other alternative methods for charging a dead car battery. Yeah! Charging an extra battery while driving a car is easier than you might think.