Questions tagged [battery-charger]

Device used to recharge a drained or dead battery.

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3
votes
2answers
840 views

Smart charger putting out too much voltage?

Hello I bought a smart 2/4/6 amp smart charger to charge my marine and motorcycle battery. When I plug it in to charge it get up to 15.7 V is this going to wreck my batteries? I always thought ...
1
vote
1answer
5k views

Charging 12v car battery with 12V 2A power supply

My car battery gets dead if I don't use the car for 10 days or more. Is it possible to charge it using 12v 2A power supply of my dth set top box. ? EDIT: Just measured the voltages using DMM. Car ...
5
votes
1answer
1k views

How do I keep an idle/unused battery ready for immediate use?

I have purchased an Exide Power MF Battery 120 A/H for my home inverter. I need to use that inverter only when there is no electricity. That can happen once a month or like that. So my question is, If ...
2
votes
1answer
67 views

Electrical feed back on charger

Do chargers like the one used to charge a car battery draw power when it is still connected to the battery but not to the wall outlet? or still connected to the wall but the power is off?
5
votes
2answers
665 views

How to prepare a car for one year of storage

This is basically the opposite question to Reviving a vehicle that has been idle for a long time I'm planning to leave my 2014 Mazda 3 in undercover storage for a year, and was wondering what steps I ...
2
votes
2answers
68k views

Can I start my car while the battery is being charged?

I'm charging a flat battery with a mains charger. I'm curious if the mains charger can also be used to jump start... If it delivers enough power? The instructions make no mention of this at all, did ...
2
votes
1answer
1k views

How many miles does it take to recharge a flat battery?

Our of car has sat unused for long enough the battery was totally dead. We jumped it the other day and drove around for 30min or so, but a few days later it is too flat to start again. From this ...
4
votes
2answers
615 views

Does a Nissan Leaf necessarily have a 6.6kW capacity on-board charger if it has Quick Charge port?

Looking at a 2015 Nissan Leaf I see it has a Quick Charge port (listed as part of the Charge Package on the spec sheet). Does this mean this car also has the 6.6kW on board charger? I'm not sure if ...
6
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6answers
60k views

What is more cost effective: re-charging a car battery or replacing it new when it dies? [closed]

My car battery recently died and I was wondering if it is more cost effective to re-charge it or replace it with a completely brand new battery. I know car batteries are charged with the alternator ...
6
votes
3answers
124 views

Multiple Batteries Charging

I have multiple batteries off from motorcycles, and each of them has it's own charge level (12-13 Volt measured at rest). Assuming I have only one 12 Volt charger, can I charge them in parallel until ...
3
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4answers
770 views

How will having two batteries effect the charging system of my 2004 Honda Civic?

I want to have a 2nd battery to power a 1000w inverter (so I do not have to start the 2004 Honda Civic). How will this affect the charging system? Will both batteries be charged?
9
votes
1answer
41k views

Car battery dead for a while... now it won't charge?

So, my car battery died 4 months ago while it was unused in my garage during the summer (interior dome light left on for months). I went to jump start it this morning, ran it 20km ( 30 minutes ) to ...
5
votes
3answers
5k views

battery fully discharged, got a jump-start, but what do I do now?

My battery was fully discharged (forgot to turn off headlights for a few hours). The car wouldn't even unlock from the remote. What should I do after getting a jumpstart?
2
votes
2answers
2k views

How long should a battery take to recharge from a wall socket charger?

My battery died and I suspect the alternator. To test I need to get the car running again and so borrowed a wall socket charger. I have no idea how long I need to let the battery charge for. Would ...
5
votes
8answers
22k views

Start a dead battery car with a power/USB charger

today my car couldn't start beacuse of dead battery. The battery is not old, I simply left my dash cam attached for a few days without using the car... I'm alone at home and my car is in a difficult ...
8
votes
1answer
10k views

Battery maintainer vs trickle charger

I understand battery maintainers, like those offered under the Battery Tender® brand, are used to keep batteries charged for long term storage, and trickle chargers are.... also used to charge ...
6
votes
2answers
2k views

Is it better to hook up a Battery Maintainer for 2 months outside, or take our chances with the battery?

My wife and I are going to be out of town for 2 months, and one of our cars will be staying home and not getting much driving. We have a Black and Decker Battery Maintainer that we were considering ...
9
votes
3answers
3k views

Is charging my engine battery like this bad?

I left a 2001 V6 Honda Accord unrun for ~4 months (I don't have a license). Naturally, the battery is dead. I have heard that letting the alternator charge the battery from empty like this puts ...
10
votes
1answer
323 views

Is there any advantage to keeping the battery "topped up"?

I got an engine/cabin heater installed into my car right before winter, which was great for driving comfort this winter. One of its "side-effect" features is that it charges and keeps your battery at ...
7
votes
2answers
581 views

12V Battery change

4 weeks ago I changed a 12V battery on my Toyota Prius auto. But after being in for two weeks the battery was discharged again. I tried to recharge it, but it did not work - the charger does not start ...
4
votes
0answers
490 views

Malfunction indicator light after a charge to low battery

My battery often needs a quick charge – 3 min or so – in the morning, then the car starts all day. Today, the light went on after the quick charge and would not go off after 2 blocks so I returned ...
6
votes
5answers
59k views

Car battery won't charge above 50%

I had a problem starting my car after not driving it for two weeks. After charging the battery with a CTEK trickle charger via the cigarette lighter socket, the car started fine. I had my car battery ...
9
votes
6answers
36k views

Can I charge a 12V car battery with a 16V 1.5A adapter?

Hello it's my first time here and I will try to address the issue as best as I can. I left my keys in the ignition a few days back and hence my battery drained itself. It is a 12V maintainence-free ...
0
votes
1answer
48 views

charging battery bank with two vastly different batteries

I have a ctek D250S DC-DC charger in my vehicle charging a 12V 100Ah agm battery from solar and alternator with up to 20A. While travelling I need to charge a 12V 7.5Ah SLA battery. Conneting both in ...
8
votes
9answers
53k views

2 Volts on Car Battery

My car battery has gone completely flat after leaving my car parked up for about a month. Tried turning over the car today, and none of the lights on the dash light up. Ran a multimeter across the ...
6
votes
6answers
97k views

Is it safe to charge two batteries off of one alternator?

Right now I have a 3000 Watt invertor wired to a 100ah sealed deep cell battery that I trickle charge at night. My plan is to run #6 wire from the battery in the engine to the spare battery so the ...
2
votes
3answers
2k views

Would leaving a battery booster with only one terminal connected harm it or the battery?

I have a 2003 Mitsubishi Diamante, and I keep two battery boosters in the car "just in case". My son recently bought a car that had problems starting. He has used both my boosters on his car and ...
7
votes
1answer
439 views

how do i know if my lead-acid battery has been resurrected?

The OEM battery in my 2008 Jetta SE 2.5L has been nearly fully discharged one month back (had insufficient surface charge after a prolonged use without the engine running, but leaving it idle for 20 ...
2
votes
3answers
159 views

Radiator overflow, temperature increase, and radiator contains oily fluid

I have Dodge Charger 2007 model, ran 145000kms. Suddenly I found temperature of radiator comes high and starts overflowing radiator fluid, which is mixed with oil. Car is in running condition, but if ...

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