How to Test and Replace a Bad Car Battery (COMPLETE Ultimate Guide)
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Date: 2021-05-06
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Comments and reviews: 9
Ryan
It may be fun to do this video, but with a hybrid vehicle. The 12V battery may not be under the hood, but in the trunk. Also, hybrids don't have alternators but have a step-down transformer (DC to DC converter) on the large hybrid battery to replenish 12V battery charge when driving. Hybrids can still be unable to start when the 12V battery is depleted despite having a fully charged hybrid battery. There's some differences which I would love to see ChrisFix explain in his fun and informative style.
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It may be fun to do this video, but with a hybrid vehicle. The 12V battery may not be under the hood, but in the trunk. Also, hybrids don't have alternators but have a step-down transformer (DC to DC converter) on the large hybrid battery to replenish 12V battery charge when driving. Hybrids can still be unable to start when the 12V battery is depleted despite having a fully charged hybrid battery. There's some differences which I would love to see ChrisFix explain in his fun and informative style.
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Robin
You should not swap a common lead acid battery to an AGM battery without making sure this actually works. Alternators are designed to charge the specific type since they may vary in charging characteristics, especially end-of-charge voltage. Most AGM batteries require a higher voltage to be charged at, and have lower absorption time. So they will be charged wrong constantly and break down a lot faster than a simple lead acid battery.
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You should not swap a common lead acid battery to an AGM battery without making sure this actually works. Alternators are designed to charge the specific type since they may vary in charging characteristics, especially end-of-charge voltage. Most AGM batteries require a higher voltage to be charged at, and have lower absorption time. So they will be charged wrong constantly and break down a lot faster than a simple lead acid battery.
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CoolDad
I'm more of a computer hardware/programming expert and slowly trying to learn how to take care/ upgrade my recently bought Jeep! Which is turning me into a car guy lol
Question though, I'm going to eventually install auxiliary lights on the bumper and get a light bar. Would I need to get a stronger battery?
(If that's a thing? My mind is comparing a car battery to a PC power supply when increasing the parts/load)
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I'm more of a computer hardware/programming expert and slowly trying to learn how to take care/ upgrade my recently bought Jeep! Which is turning me into a car guy lol
Question though, I'm going to eventually install auxiliary lights on the bumper and get a light bar. Would I need to get a stronger battery?
(If that's a thing? My mind is comparing a car battery to a PC power supply when increasing the parts/load)
reply
bluecrownvic
Quick tip: Always disconnect the negative terminal first.
If you don't then you can create a circuit through your body if you are touching anything metal on the car while disconnecting the positive terminal.
I've also seen where people have shorted out the battery using a wrench on the positive terminal and hitting something metal with the other end of the tool. Negative terminal first.
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Quick tip: Always disconnect the negative terminal first.
If you don't then you can create a circuit through your body if you are touching anything metal on the car while disconnecting the positive terminal.
I've also seen where people have shorted out the battery using a wrench on the positive terminal and hitting something metal with the other end of the tool. Negative terminal first.
reply
Anthony
I went to work last week in the morning and had no problem starting whatsoever. When I went home I wasn't able to start because my battery was completely dead. not even a whimper. It's not because I left my lights on because the lights automatically turn themselves off. I drive 30 miles on the freeway to go to work, so charging was not an issue. Don't know what went wrong.
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I went to work last week in the morning and had no problem starting whatsoever. When I went home I wasn't able to start because my battery was completely dead. not even a whimper. It's not because I left my lights on because the lights automatically turn themselves off. I drive 30 miles on the freeway to go to work, so charging was not an issue. Don't know what went wrong.
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Greg
On those innova multimeters you re supposed to set it to DCV. In my experience with that meter, setting it to Battery Load Test like you did shows slightly less voltage than the battery actually has. Obviously that battery is still bad, and even on that setting it should be slightly over 12 volts at least, but I just wanted to mention that!
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On those innova multimeters you re supposed to set it to DCV. In my experience with that meter, setting it to Battery Load Test like you did shows slightly less voltage than the battery actually has. Obviously that battery is still bad, and even on that setting it should be slightly over 12 volts at least, but I just wanted to mention that!
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wholeNwon
A weak battery can produce all sorts of seemingly unrelated gremlins in most cars. My daily driver is 23 yo and a weak cell or 2 will cause ABS and VSC faults to appear, make the engine flood, etc. So, if you're having odd issues, don't dismiss the battery without checking connections, load testing, etc.
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A weak battery can produce all sorts of seemingly unrelated gremlins in most cars. My daily driver is 23 yo and a weak cell or 2 will cause ABS and VSC faults to appear, make the engine flood, etc. So, if you're having odd issues, don't dismiss the battery without checking connections, load testing, etc.
reply
Josiah
As someone who builds computers, car batteries are just like power supplies for you computer. The ratings are as follows:
80+
80+ white
80+ bronze
80+ silver
80+ gold
80+ platinum
80+ titanium
As per usual, thx Chris. Now I know what I need to do today. Check my battery lol.
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As someone who builds computers, car batteries are just like power supplies for you computer. The ratings are as follows:
80+
80+ white
80+ bronze
80+ silver
80+ gold
80+ platinum
80+ titanium
As per usual, thx Chris. Now I know what I need to do today. Check my battery lol.
reply
Micha
Another reason to go AGM on an off-road vehicle is that there is no risk of the acid spilling when the car is driven on extreme angles or even flipped over. It's more important in motorcycles, which lean all the time in corners and fall over more often, but it is safer none the less.
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Another reason to go AGM on an off-road vehicle is that there is no risk of the acid spilling when the car is driven on extreme angles or even flipped over. It's more important in motorcycles, which lean all the time in corners and fall over more often, but it is safer none the less.
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