Why does my battery charger not charge flat?
Problem is that a smart charger needs to “know” it’s got the right type of battery attached before it’ll start to charge, and it’ll adjust the charging voltage/current to best charge the battery. If the battery’s so flat that the charger doesn’t “see” it, it won’t charge it. So you need a dumb charger that just blindly shoves out +14v whatever.
What to do if your car battery goes flat?
In the cold weather, when you get to work, or get home, get into the habit of switching all of the cars electrical things off, and sit in the car for a couple of minutes, with the engine running before getting out of the car. This will top the battery charge up ready for the cars next cold start. ok interesting.
What happens if a car battery is not charged?
Most car batteries fail if they’re not being used, they’re only used for stop-start or short journeys, or because they don’t get the chance to recharge properly. You can take years off the life expectancy of a car’s battery – or even halve it – by not regularly fully charging it.
Why does my battery light not come on when I start the car?
Excessive corrosion at the battery terminals can cause a low voltage condition which makes the starter turn slowly when trying to turn on your vehicle, but it will not illuminate the battery light if the alternator is charging properly once the car is started. Step 4: Secure the clamps on to the battery terminals.
Problem is that a smart charger needs to “know” it’s got the right type of battery attached before it’ll start to charge, and it’ll adjust the charging voltage/current to best charge the battery. If the battery’s so flat that the charger doesn’t “see” it, it won’t charge it. So you need a dumb charger that just blindly shoves out +14v whatever.
What does it mean when Battery Light comes on while car is running?
When you first turn on your car with the engine off, the battery light will illuminate and this is normal. If the battery light comes on while the engine is running and the vehicle is being driven, this indicates a problem with the charging system. Step 1: Turn off everything that draws power.
What causes a car battery to lose charge?
A car battery might lose some of its charge for other reasons. An electrical short or an accessory that is not functioning properly could cause excessive drain on a battery.
Why does my Halfords battery charger not charge?
I have a halfords battery charger, used it to keep a leisure battery topped up for a few years. I left the battery for a year or so and then the charger would not charge it. The test lights come up and say it is working just the two lights that say charging/ maintaining don;t light up.