Can I use a DC power supply to charge a car battery?
Can I use a DC power supply to charge a car battery?
No. If your power supply is well-regulated (with linear regulators or switched mode power supply), so that it outputs 12V at all load levels, the voltage is way too low. Common float charging voltages that can be left indefinitely on are 13.5V – 13.8V.
How do you charge a dead 12V lead acid battery?
Attach a battery trickle charger or a computerized smart charger to your old lead acid battery, and allow charging continuously for about a week to 10 days. The extremely slow charging rates dissolve the de-sulphation that kills the battery, and revives it back to being able to hold a usable charge.
Can you charge a 12v battery with a DC power supply?
YES, you can use 12V DC power supply for charging car battery. After charging for 18 hours, check battery voltage. If it is 11.5V or more, start engine (car) with it and keep it charging for at least 30 min.
What kind of DC is needed to charge a lead acid battery?
To charge a sealed lead acid battery, a DC voltage between 2.30 volts per cell (float) and 2.45 volts per cell (fast) is applied to the terminals of the battery. Depending on the state of charge (SoC), the cell may temporarily be lower after discharge than the applied voltage.
Do you need a DC power supply to charge a battery?
A DC Power Supply is needed that allows for adjustable voltage and current. Any such as that shown on the right will suffice to provide the voltage and current that we need in order to recharge a battery cell. We use a battery holder for our battery because the battery holder gives us two leads…
What happens if you overcharge a lead acid battery?
OVERCHARGING A LEAD ACID BATTERY As a result of too high a charge voltage excessive current will flow into the battery, after reaching full charge, causing decomposition of water in the electrolyte and premature aging. At high rates of overcharge a battery will progressively heat up.
Can you use taper current to charge lead acid batteries?
The taper current charging method is not recommended as it is somewhat abusive of sealed lead acid batteries and can shorten service life. However, because of the simplicity of the circuit and low cost, taper current charging is extensively used to charge multiple numbers and/or for cyclic charging.