KristofN1
26.04.2021 20:11:57
The most basic rule is that you can charge at any current you like until the battery reaches 2.4 volts per cell at 25 deg. C (77 deg. F). That’s the familiar 7.2v per 6v battery, or 14.4v for a 12v battery.
See full version: How many amps do I need to charge a 6 volt battery
The most basic rule is that you can charge at any current you like until the battery reaches 2.4 volts per cell at 25 deg. C (77 deg. F). That’s the familiar 7.2v per 6v battery, or 14.4v for a 12v battery.
Also, Can you overcharge a battery at 2 amps?
A: If you leave the charger connected continuously, even at a mere 2 amps, the battery eventually will die. Overcharging a battery causes excessive gassing — the electrolyte gets hot and both hydrogen and oxygen gas are generated. here
Beside this, Is it better to charge a battery at 2 amps or 10 amps? here
Alternatively, you may use a charger that has a variable voltage setting, which can be set to 6V for this purpose. This will ensure that your battery is properly charged without a problem. A 6V battery is actually fully charged when it reads slightly over 6V on a multimeter.
Beside this, Is it better to charge a battery at 2 amps or 10 amps?
For 6v batteries, the first charge should be 10 hours, with regular charging taking 6 hours. For 12v batteries, the first charge should be 18 hours, with regular charging at 12 hours.
This would give the coil a boost of current to aide hot starts. BTW 6 volt starters draw the same amps as 12 volt (both about 100 amps), but their wiring is larger than 12 volt because it only has half the voltage (pressure) available to push through any resistance (restriction). here
Solder the positive battery charger wire to one of the leads on the first resistor. Cover the soldered joint with electrical tape when the joint cools. Solder the free lead of the first resistor to jointly to one of the leads on the unconnected resistor and to the positive battery terminal wire. Cover the joint with electrical tape when the joint cools.
Battery chargers are used to maintain the electrical charge on a secondary cell battery. As a battery discharges, the electrolyte in the battery combines with the electrode material, causing crystal formations. Battery chargers reverse the chemical reaction which creates the crystals, thus rejuvenating the battery. For a battery charger to work properly, the charger voltage must be the same as the battery voltage. Applying too much voltage to a battery will cause the electrolyte to overheat, and will damage the battery. With a few modifications, a lower voltage (such as a 6V) battery can be charged with a larger (such as 12V) power source. more
Snip the battery clamps off the charger, leaving approximately four inches of wire on the battery clamp. Mark the wire that formerly went to the positive battery clamp by placing a piece of electrical tape on it. Strip the snipped ends of the battery clamp wire and the battery charger wires of about a half inch of insulation.
Solder the free lead on the second resistor jointly to the negative battery terminal and the negative battery charger wire. Cover the soldered joint with electrical tape when the joint cools. [links]
After recharging the battery, test it to find out if it is capable of holding a charge. Do this by use of a hand held electronic battery tester or a conventional load tester. If the battery is good or bad, be sure that the tester will tell you. It is important to note that for accurate test results load testers require the battery to be fully charged. Reliable test results are given by most electronic testers even if the battery is not fully charged. Replace a battery if it fails a load test.
It is important that you first check the battery plus the charging system output (alternator). Turn on the headlights if they come on with normal brightness it’s possible the no crank problem is not the battery. The problem could be one of the following:
12 volts is the standard automotive battery in today’s vehicle and each of the battery has 6 cells with a voltage of 2.1. A fully charged car battery has 12.6 volts.
In case the battery has a reading of 12.4 from the voltmeter, it means it is low (discharged) and should be recharged. A battery fully charged has a reading of about 12.6 volts.
You should connect the voltmeter to the battery as before but not the charging voltage and this should be done after charging the battery or jump starting the car. 13.5 to 14.5 or more volts at idle should be produced by a charging system that operates normally. The alternator may not be putting out enough current to keep the battery charged if the charging voltage is less than 13.5 volts. Make sure the alternator is tested (can be tested at an auto parts store). Consider replacing the alternator if the current output is not up to specifications.
Consider your car battery charged at 12.4 volts or higher and discharged at 12.39 volts or less. more
A 30 amp charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in about 1 hour, a mid-sized battery (315-550 CCA or RC 60-85) in 1 hour, or a large car battery (550-1,000 CCA or RC 85-190) in 2 hours. Double the times if 100% discharged. It’s not recommended to use this large of a charger.
A 50 amp charger can charge a 50% discharged small car battery (200-315 CCA or RC 40-60) in 45 minutes, a mid-sized battery (315-550 CCA or RC 60-85) in 45 minutes, or a large battery (550-1,000 CCA or RC 85-190) in 1 hour. Double the times if 100% discharged. Do not use this large of a charger for car batteries.
After you locate where your car battery’s rating fits, you will see an estimate for the charging time depending on whether or not it is completely dead (100% discharged) or half dead (50% discharged).
32AH / 2 = 16AH that needs to be replaced. 16AH / 13.5 hours = 1.19 amps per average hour from the 1.5 amp charger. The 12-hour battery at 50% needs 6 amp hours recharged. So, 6AH/5 hours = 1.2 amps per average hour from the 1.5 amp charger. The 6AH battery needs 3AH recharged, so 3AH/2.5 hours = 1.2 amps per average hour from the 1.5 amp charger.
If this doesn’t work, you can repeat the process a couple of times for longer durations when connected to the donor vehicle. more
Most car batteries are in the range of 40 to 70 amp hour equivalency. Truck batteries and other larger vehicles or those with lots of electronics might get up in the 80 amp hour equivalency range or higher. more