correct way to reconnect a car battery

Place the new battery in the battery hold-down tray and secure the battery with the hold-down clamp. Car Battery Disconnect Memory Kit.

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Attach the black battery cable to the negative terminal.

. Then slowly loosen its nut by turning it counterclockwise. Use a 10mm wrench or socket to tighten down the clamping bolts. Start with the positive side first.

In case you cannot reach the nut of the terminal attach a wrench extender. Tighten them down with a 10mm wrench or socket. Lay the disconnected negative cable carefully to one side making sure its well away from the battery terminal.

Reconnect the Battery Cables Put the battery cables back onto the battery posts. The new clamps will last for quite some time. Once the area and connections are clean you are ready to put the new battery into the car.

Use your wrench to loosen the nut that connects the negative terminal of the battery then remove the nut completely. Reconnect the battery and turn the car on to make sure it is functioning properly. And the connector just plugs into the cars cigarette lighter or the OBD-II connector.

Use a wrench to tighten the bolt on the side. Next lift the terminal off the battery post and place it safely beside the battery wrapping it up in a shop towel to avoid accidental contact. When youre disconnecting the cables youre subtracting them from the batteryand the symbol for subtraction is minus - so the negative cable is disconnected.

Again use caution that you dont over-tighten. Next secure the battery by refastening the connectors and fasteners on your batterys hold-down. It has just enough voltage and current to keep all of the computer memory alive.

If you do -ve to -ve firstly then you will create a circuit if you inadvertently touch bodywork with the red lead. Easiest way to remember it is. Spray both terminal ends with anti-corrosion solution.

Be careful you dont over-tighten itterminal leads are made of softer metal and can break. Make sure you disconnect the negative terminal first. Originally they had to ensure that the were make before break switches which means they connected the second battery before disconnecting the starter battery otherwise allowing the alternator to go open circuit was a sure way of prematurely ending its life.

Stop once the bolt starts to give resistance. Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8. Use your socket wrench or adjustable wrench to loosen the nut holding the cable onto the negative battery terminal.

After removing the positive terminal cover repeat this process with the nut holding the terminal to the positive. Step 1 First ensure you are parked on a flat level surface engage the handbrake and remember to keep the keys about your person in case the central locking system activates when the old battery is removed. I connect ve to ve firstly.

A lot of workshop manuals cite disconnecting the -ve terminal before commencing work presumably because the whole chassis is then isolated. Ensure that all cable connections hold downs are properly tightened. Loosen the nut on the negative terminal.

Attach the red battery cable to the positive terminal first. Connect the new battery in the reverse order positive then negative When you are replacing your car battery It isnt always easy to remember the order in which to disconnect and reconnect the terminals. Attach and tighten the negative battery cable Black.

Take the suitable wrench and put it on the negative terminal. Attach and tighten the positive battery cable Red. So a memory saver is simply a connector with a small battery.

The terminals will be marked positive and negative. When you disconnect a car battery loosen the negative terminal first. Make sure it is oriented the correct -same as the battery you removed- way before you move on.

But for this purpose I cant see the difference. While the cars main battery is disconnected. Repeat for both the positive and negative battery terminals.

Positive first then negative. First carefully place the battery into the battery tray. When disconnecting the cables from the old battery disconnect the negative first then the positive.

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