Skip the auto shop - Our mechanics make house calls

Q: How to tighten battery connectors

asked by on

My back car lights were on and I couldn't figure out why I didn't know if it was the break lights or what. Later that day my battery died and my granddad said he loosened my battery poles so it wouldn't drain my battery (this was the next day) and I said it was already dead so now I need to know how to tighten the connectors back so I can charge my battery. Please help
My car has an automatic transmission.

A: Hello. Bolting connectors back on can be da...

Hello. Bolting connectors back on can be dangerous if you are not clear on how to do this. If you do not understand the mechanical (bolt on) connection between your cars electrical wiring to the battery terminals, for your own safety do not attempt to make adjustments or connections there. The reason is if you mistakenly short circuit anything in the vicinity of the battery, worst of all if you short circuit the top (or side) post connectors, the battery could explode leading to injury. I recommend having an expert properly have this done. An automobile battery is a high energy device containing hundreds of amps of power. All aspects of car maintenance have elements of danger but this is one that can be particularly dangerous if you are unexperienced. The main idea is to open up the clamps using a ratchet, cleaning the terminals, and tightening the clamps on the correct terminals. The most important aspect is making sure the cables are connected at the right cables. Always connect the positive cable first to avoid a short circuit. Again, have someone skilled perform this procedure if you are unsure.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: The engine will not turn over. The battery and fuses are okay.

Hi and thanks for contacting Your Mechanic. Since the problem started when you had replaced the battery, check the wires to the battery and make sure that they are not corroded. Also, check the battery cables for they are on...

Q: Car stalling and ticking

Hello. Misfires are the most common reason why catalytic converters fail prematurely. The raw unburned fuel is pumped into the exhaust and destroys the inside of the converter. If your car is misfiring, I suggest seeking help form a qualified...

Q: My 2013 chey impala ltz reads engine idle and trans hot what do I need to do to stop this from happening and my trans is not shift

The overheating of the transmission might be due to it being stuck in too low a gear for the vehicle speed. The transmission in your car is electronically controlled and uses a transmission pressure control solenoid which occasionally fails. The...

Related articles

Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.