New answers tagged

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100F will not severely impact a CCA test. I assume you had the test done with a tester, like at a car parts place. Most of the testers are compensated for temperature, which is normally a bigger issue with colder temperatures. Battery ratings (and those for other things) are for new components, in perfect condition. After you use your battery, or it sits ...


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a battery charger is good to have no matter what. I bought one of those jump boxes for $50 to have in case of emergency. Very smart move on my part.


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The Nissan Leaf is one of the few EVs where an end user can easily get battery health using the LeafSpy program on Android and a OBD2 to Bluetooth adapter. All other current EVs require a dealer tool for accurate cell-level readings. This is mostly a problem when buying a used car. An unscrupulous seller can reset the car’s computer which might cause the ...


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First, if you are having to jump start your car every day, your current battery is toast (whether it is new or not). You may indeed have a parasitic drain that is the cause of your bad battery, but you still definitely have a bad battery. If it's been drained down more than a few times so much that it won't start the car, it's just never going to hold a ...


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With a current draw of 100mA or 0.1A, a 10Ah battery would theoretically discharge completely in 10 / 0.1 = 100 hours or about 4 days. In practice you need to reduce that figure, because you don't want to fully discharge your battery unless there is some automatic system for disconnecting it before it is damaged. So unless you are going to ride the bike ...


1

This answer assumes there's a fault in the electrical system somewhere. With the bike off, remove the cable from one terminal of your battery and put a multimeter (IN CURRENT MODE!) in series with the battery terminal and cable. You should see zero amps flowing through the meter. If there is current flow, even in the milliamps range, you've got some kind ...


7

There are several possibilities: The bike's battery is bad. This is by far the least likely cause, as the previous battery behaved exactly the same way. The chances of having two batteries fail sequentially in the same manner is very low. The battery is not being charged when the motor's running. If there's something awry with the charging circuit or its ...


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In answer to the main question, yes I have experienced this. The battery was utterly trashed, the vehicle would never crank. But, we were on a work crew and had to get cracking so we jumped it every morning. The battery was always hot in the mornings before we jumped it and eventually it popped while driving, steam/smoke came pouring through the AC vents. ...


0

A cheap hack is to disconnect the battery every time you stop and leave the car, and reconnect it when you want to start the car and drive. Assuming the car keeps the battery charged while it's running, it's an easy solution. If you want an easier way to disconnect the battery, you can get a switch.


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A trickle charger is relatively inexpensive and can help you limp to the next stages of fixing the problem. But it will only help you launch from point A unless you pack it and take it with you, and it will suck to be without juice leaving from point B constantly.


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Well, you can buy a charger for about 50 bucks that will deal with the symptom. BUT you may find the bcm fails further and then you will need to replace it or the car... The charger will work on the next car... Your choice.


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4 hours of interior lights will not kill a brand new car battery. I am presuming you drove it normally in between. 12 hours (3 sessions with no driving between) might kill a new car battery, but even that seems unlikely -- assuming a rather smallish 48 amp-hour car battery, interior lights would have to be pulling at least 4 amps, which is quite a lot. ...


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The code of P107R = October (10) 2017 (7) This answer might help others.


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Automotive batteries are designed for infrequent, brief high amp output with minimal parasitic load. Regular use as a power supply battery providing sustained low amp load will lead to a reduced service life of the battery. A better solution is an isolation circuit and a second, power supply type battery such as a marine or wheelchair battery. The voltage ...


0

Most cars today have alarm systems which drain the battery when left for some time. Find out how much current yours is drawing from the battery. Lead acid batteries car batteries hate being deep cycled. I.e. drained to a very low charge and then charged again. Leisure batteries are designed for this purpose. They can be deep cycled. When I found a friends ...


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If your car is drawing too much power while off (short in the circuit somewhere) then the car charger will shut off to protect you from a potential fire hazard. You have to remember that whatever load is placed on a trickle charger would draw power from that trickle charger. It is a safety feature for the trickle charger to shut off if there is a excessive ...


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I see 2 possible scenarios for the battery voltage. You have some accessory that is pulling a small draw consistently. 0.7v is not a huge amount, but that not very little either. So it is possible that something is drinking all night and bleeding that voltage off. Depending on how you're getting the 12.5v reading, that may not be where the battery is stable,...


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It is perfectly all right to discharge a lead-acid accumulator. In fact in military use, such batteries are periodically put through a discharge/recharge cycle to keep them healthy. It is a common misunderstanding that drawing current from this type of accumulator battery wears it out. What can hurt a battery is to draw current too quickly, or to recharge ...


5

A battery should be able to run the flashers for several hours and still start the car. There should be a sticker on your battery which tells the month and year it was manufactured. The sticker will either be M/YY indicating the month and year, or a code such as D6, where D is the fourth month of the year (sequentially mapped months A-L), and 6 is short for ...


1

Here's an example how charging system works on a car with combustion engine. Power from the alternator goes to the battery and then goes to the car systems. Alternator is connected to the battery all the time and it's charging it all the time when engine is on almost all cars. See the scheme below. There's a special voltage regulator (modern cars have it ...


2

The CCA is Cold Cranking Amps, and a battery’s performance is always reduced as the temperature drops especially in winter, then starting with more is better. The system will only draw the amount of current it needs at any given moment and the system won’t be damaged by a greater capacity. The starter will not wear more or less due to the battery CCA but ...


0

Not a comprehensive answer, but battery chargers employ different methodologies in charging. A old school transformer battery charger, plugged in all the time, could overcharge and dry your battery out, leading to premature failure. If that happened, you might be able to add distilled water to the electrolyte. When leaving a charger continuously connected,...


1

In general, one can always exceed the CCA spec. You probably do it on a warm day, with a charged battery. Having more potential current available will not hurt the car's electrical system. It may actually provide for slightly faster starts, with less wear on the starter motor, but in most cases the difference is not significant enough to worry about. ...


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Any auto battery used monthly and competently charged in-between should last 4-8 years depending on conditions. This is halfway between a daily automotive use (where that is true) and less-than-once-yearly emergency-power use (where that is also true). If the technology is lead-acid, age in years will be the single most important factor, and there will ...


1

Insulation works to keep things hot or cold, while the battery will always achieve thermal equilibrium anyway. But it does help keep the battery cool for a while as under bonnet temperatures can easily exceed 70 deg C. In winter it helps the battery stay a bit warmer between uses as a battery looses a lot of performance as the temperature drops. You can ...


1

You can perform maintenance or "float" charges with underpowered battery chargers, but performing bulk charges (i.e. if the battery is completely drained) can burn out microcontroller in the smaller-powered "smart" chargers, or worse, cause the release of Hydrogen gas from the battery. In summary, you CAN charge it with a lower powered battery charger, but ...


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