Questions tagged [charging]

The act of re-vitalising the plates inside a car's battery (voltaic pile)

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3 battery setup in campervan

I currently have a 120 Ah AGM LP120 leisure battery in my camper van to power my 12 V fridge, LED lights etc. I have recently bought two further batteries to allow me to stay 'off grid' longer whilst ...
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Connection of Protective Earth in EVs [migrated]

I am new to this forum and this is my first question. I am reading about the Electric Vehicle and their charging. I went through this link - J1772, where the connector image is displayed. The ...
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Real World Performance of On-board EV Chargers

Kia's specs say that the on-board charger of the US model of the 2022 Niro EV has a capacity of 7.2 kW. We use a Grizzl-e Smart EVSE set to 40 A, it's fed by a 50A circuit (which derates to 40A). At ...
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How are 800 volt EVs charged in 400 volt fast charging stations?

I have understood that most EVs have 400 volt batteries, but some newer EVs that can support fast charging rates have 800 volt batteries. EVs can be charged in two ways: either by AC charger with ...
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Will a battery maintainer work in freezing temps if plugged in outdoors?

I have an outdoor car that working from home I don't drive more than once a week or so with a once a month longer trip. I'm not interested in going out for a thirty minute drive once a week to keep my ...
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Renault Master Battery/Charging Problem

I'm having some alternator charging issues with my Master since 1 month, today it got much worse. It is 2016 with 135k km. Car shows up STOP and Low Battery warning, when it first started happening ...
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2006 Ford F 150 5.4 Triton motor XLT Alternator No Charging

I New Alternator New Fusible link and I still have low voltage battery light in the dash that went away I have read a lot in I Can Find The problem HELP
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Broken 80 Amp Auxiliary Fuse / Lithium Charging Options

2019 Ford Transit Connect Self built camper Some mechanical knowledge Under the computer, in the engine compartment, I connected an AGM house battery to the 80 amp bolt in fuse. AT some point I did ...
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New alternator and 2 new batteries but still get bad battery light

Have a dual battery setup in my 2000 gmc Sierra with an auxiliary battery for my sub isolated through a relay to the other for charging had some issues with the lights dimming so I replaced the ...
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2002 VW New Beetle battery discharges only while driving?

My 2002 VW New Beetle has a sketchy (dis)charging issue. Specifically it appears that while the AC is running (though I'm not positive that's always the case) after about 15-20 minutes of driving the ...
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Will solid state EV batteries be chargeable using current chargers?

It seems that solid state batteries in EVs may be only a few years off. Does anyone know whether current charging systems/plugs will be capable of charging these batteries?
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'78 Volkswagen vanagon , battery issue

Howdy folks I have a 78 Volkswagen vanagon, I'm having battery issues due to the fact my disrespectful son-in-law ripped out my battery when he did this there is a positive cable and a negative cable, ...
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Charging car battery with charger without disconnecting from car

Got a Toyota Corolla E170 and it is only used for highway travels twice a month. Car has a tracker installed as well. I want to give the battery (lead acid 46AH) a top up using battery charger (10A) ...
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2008 Mustang Cabin Leak and “Check Charging System”

Went to go run some errands today and my 2008 Mustang wouldn’t start. Didn’t even sound like the engine was trying to turn over. Lights flashed inside and CD player went absolutely ballistic. The dash ...
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EV Charging Efficiency

On most (all?) EVs there is a "sweet spot" charging from 10 or 20 percent up to around 80 percent where the battery is accepting charge at a relatively high and even rate. Then somewhere ...
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2010 Dodge Avenger : Battery light coming on, battery discharging

The patient is a 2010 Dodge Avenger R/T with the Federal-spec 2.4L I4/4 speed automatic. It has ~117K miles. My son's original complaint was that the battery light had come on while driving to an ...
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Will battery recharge help temporarily?

I am fairly certain my wife's BMW X1 needs a new battery, but cannot get into NTB for another couple of days. If I give the battery a bit of a boost with my external charger for the next two nights, ...
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Can EVs charge from solar panels directly?

Going to leave my car in an outdoor parking lot for a week, and it made me curious. Can I attach a small solar panel (<100W) to the inside of any modern EV such that there is a higher state of ...
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Is there any walkthrough material, or guide to set up solars on a Tesla to charge while driving?

I have found videos and full tutorials how to achieve solar charging with portable solar panels such that you could even non-temporarily affix to the top of the car, and charge when you stop (normally,...
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Is it normal to over flow little battery liquid

I got an overflow issue with my car's old battery and now replaced it with a new one. currently, when I go for a long drive few vapors are released through the overflow exit side of the battery. Is it ...
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2003 Ford Escape charging issue

So I’ve had alternator issues in the past in my 2003 Ford Escape. Just the other day my battery light came on, I took out the alternator and the battery and my alternator failed a bench test, so I ...
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What could cause premature failure of a brand new alternator on my 2007 Ford Escape?

The (I believe original) alternator on my 2007 Ford Escape failed last month and was replaced with an alternator from FVP. The battery was tested and seemingly passed muster. Now, three weeks later, ...
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Under what circumstances should you use the Fast Charge or Trickle Charge settings on a car battery charger?

When using a modern battery charger to recharge a basic car battery that is in good condition, but is run down to the level that it is unable to turn an engine over, under what circumstances should ...
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Charge 24V Battery from 12V Alternator in Trailer

What is a reasonable approach to charging a 24V battery system from a 12V source such as an alternator? Can I simply use a 12v-to-24V step up converter? Seems I’d actually need this converter to hit ...
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Brand new battery sitting for 3 months, doesn't hold charge anymore

I have a 2017 Toyota Yaris Hatchback. The car had some cranking issues. I did a cranking voltage drop test (dropping to min 7v when cracking), it seemed like the battery was done. I replaced the ...
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How high is too high for battery volts

I have been doing some unrelated auto electrical work on a 1964 pontaic bonniville .I checked the charging voltage with the giant 389 at normal idle .Measured 15.9 Vdc on trusted DVM .When we ...
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Battery charging?

My car battery died last Monday and it’s been a week; I’m trying to get it to charge using a noco genius portable battery charger but nothing comes on in my car, no sound lights or anything. Will I ...
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Safety around permanent trickle/float charger connection for car battery

I rarely use my second car, as a result, the battery often drains too much by the time I need it. I have a slow charge battery pack which works if I want to wait a while to get to the minimum level to ...
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Charging LiFePO4 with car alternator

I currently have this setup in my van: Alternator -> Car Battery -> Voltage Sensitive Relay -> Leisure Battery (AGM) I'm thinking of changing out my AGM battery with a LiFePO4 battery instead,...
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can I trickle charge a spare car battery (located inside the car) from the cigar lighter port while driving?

I keep a car parked in a lot in another state. I get out there every few months or so. The battery under the hood sometimes is dead due to the small system draws while the vehicle sits idle for a ...
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My car battery light is on

I have a 2010 Toyota Corolla S. Today, after driving around for 15 minutes, when I parked, my battery light came on. I took it to Autozone. After checking my battery and the changing system they said, ...
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MotoMaster Eliminator 1400A Booster

I have one question about charger booster. I have MotoMaster Eliminator 1400A Booster bought in 2014. I think its battery is dead, because it does not boost the car even when it is fully charged. Can ...
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12 to 24v charging with isolator

I'm trying to find the best way to charge my 24v solar battery bank off my 12v bus system. The simple way seems to be a step-up converter and a diode, but I'm wondering if I can replace the diode with ...
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If you connect 2 car batteries in parallel and one has a low charge, how much would the low charged one draw from the other battery?

I'm just wondering this for the sake of understanding. If you have a low charged battery that is connected in parallel with another battery (that is fully charged), how many amps would the low charged ...
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Fiat 500e charging EV discharged battery below "standard" charge level

I'm trying to revive Fiat 500e EV battery which is discharged after not using it for 3 months (second reason was bad 12V battery). I've disassembled whole battery pack below car and I have access to ...
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Is it safe to disable the stop/start system?

I want to permanently disable the stop/start feature on my Skoda Octavia Mk3 (based on VW). TL:DR; The implementation is faulty. Suppose I want to pass a parked car, and slow down for a car coming the ...
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Cigarette lighter fuse repeatedly blows when connecting car inverter

I was using this car charger to charge my MacBook Pro from past two months without any issue in my Swift Dzire 2012 model. Today, I connected two laptops at the same time using a multi socket ...
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Can I charge my laptop using a simple USB cigarette lighter

I’m not sure this is the same thing as the 100w inverter i saw mentioned in another answer. This is supposed to work for phones but I’ve never used it for my laptop as I’m afraid it’ll break it. It’s ...
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2 answers
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What is the Likelihood of a car alternator fault being due to worn field winding brushes? [closed]

TL;DR: If a 2001 Toyota Corolla alternator is faulty, how likely it is that the field winding brushes have gone open circuit? It's reasonably likely that the alternator is the original one.  ...
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Is the 3 pin plug provided in a cigarette lighter port inverter (12v-220) actually grounded?

I have been planning to buy a 12v car inverter, that plugs into the cigarette lighter port and puts out 220v with max 200watts, for sometime now. The one that I ordered is of brand portronics and has ...
Dhruba Banerjee's user avatar
4 votes
2 answers
843 views

Alternator squeal

98 rav4. I have a bad squeal, however I tried a new alternator and it did not go away. The charging voltage does not go above 12.3 and when I unplug the plug on the back of the alternator the ...
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12V AGM battery charging voltage

I have the following 12V car battery: Varta Silver Dynamic AGM 595901085 (12V/95Ah/850A), and the following car: Jaguar S-Type 2.7D. In the technical cars manual it says this: So in cold winter ...
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Fiat 500e 2017 charger

i just owned a Fiat 500e 2017 sport package... i wanted to make sure that the charger that come with it is the real original one and not imitative, as i saw charger with different style, how i can ...
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1 answer
101 views

93 Seca 2 won't start without a jump, battery good?

So i have taken the battery out and had it tested at autozone and they said the battery was fine. the solonoid is fine because if i hit the starter the motor starts to act like it wants to turn but ...
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2011 Ford Mustang Gt "Check Charging System" light after changing alternator

My mustang started showing a code for "camshaft position sensor" so I replaced it. 1 day later, it came back on, same sensor so I started doing research. Everything I read said it was probably the ...
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Alternator: amperage when charging a car battery (and time to charge)?

What is the amperage of a typical car alternator when charging the car battery, and how long would the alternator take to charge it (let's take a 60Ah battery as an example)? I have seen multiple ...
Pythonista anonymous's user avatar
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1 answer
2k views

How is alternator directly connected to vehicle electronics?

I've tried a lot of research but I can't find specifically what I'm looking for no one has actually mentioned this and I've looked at various wiring diagrams which still don't prove how this is ...
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1 answer
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Can I trickle charge battery through OBD2 port 2007 civic

Trying to determine if 2007 civic OBD2 port is live with key off so I can trickle charge with a solar panel
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1 answer
176 views

Alternator health check

My car (Fiat Grande Punto MY2008) has been having an occassional battery light and failure of the power steering. Perhaps once in every 10-15 startups, and is resolved by restarting the car. The car ...
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1 answer
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Any benefits of a relay over a dead mans switch between two 12V batteries apart from preventing discharge of starter while car is off?

I am fitting a second "leisure" battery in my car. It will be a 12V 115-150Ah AGM lead acid battery for use when the engine isn't running with loads up to 500W, generously, in practice It will be 250W ...
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