To estimate the charging time for a 12-volt battery using a 1.25 amp charger, you first need to know the battery's capacity, typically measured in amp-hours (Ah). For example, if you have a 12-volt battery with a capacity of 50 Ah, it would take approximately 40 hours to fully charge it from a completely discharged state (50 Ah ÷ 1.25 A = 40 hours). However, charging times can vary based on the battery's state of charge, age, and efficiency of the charger.
20 minutes
A trickle charger is a car battery charger that is designed to be left on a car for very long periods of time to re-charge that car battery by slowly adding charge to the battery.
Yes, you can charge a 12V 7.2Ah battery with a 12V 300mA charger, but it may take a long time to fully charge the battery due to the lower current output. The charger will provide a safe voltage for the battery, but the charging time could be significantly extended compared to a charger with a higher current output. Ensure the charger is compatible with the battery chemistry to avoid any damage.
It varies depending on how much other electronics you are using on the vehicle at the time. Could take hours. I do not recommend you charge any dead battery with the alternator if you can avoid it. it puts too much of a strain on the alternator and may damage it. Charge a dead battery with a battery charger.
two hrs
How long it takes to charge any battery depends on how much electrical charge it can hold. The physical size of a battery can give an indication of how much charge it may hold: the larger the battery, the more electrical charge it is likely to be able to hold. or you could just divide the mAh of the battery by the output rate of the charger. ex: 5000 mAh on a 3000 milliamp output charger would be 1hr 36min. and 3300 mAh on the same charger would be 1hr 10min. and so on.
Most good battery chargers are automatic and will stop charging when the battery is fully charged. But if the charger is a manual charger it can overcharge the battery. With this type charger it is up to you to remove the charger when the battery is fully charged. Normally this is based on the amount of time the charger takes to charge the battery pack. Operators manual will list the time.
Yes, but it will take a very long time if the battery is dead.
A very, very, long time with direct sunlight. Charge your battery with a battery charger
Some car battery charges will not charge a completely dead battery. You need to find a type of battery charger that is designed to charge a completely dead battery. You can get around this by hooking a car with a working battery up to the dead battery with jumper cables. The alternator/charging system of the car with the good battery will charge the dead battery. Leave them connected for about 30 min, then disconnect and try to use the battery charger again. If it still won't charge, hook it up to the car with the good battery for a longer period of time.
I can if I charge 2 of them at a time. Most 24 volt chargers also have a 12 volt setting. What is hard to find is a 32 volt charger. We can charge a 12V battery with 24V charger, by connecting two 12V batteries in series i. e. the negative terminal of the first battery is connected to the positive terminal of the second, now the charger positive terminal is connected to the first battery positive terminal and the negative terminal of the charger is connected to the negative terminal of the second battery.
Check the level of the electrolyte (water) in the battery if possible. If it is near full, then reconnect the battery charger and charge it at the 2 AMP rate. This is known as a "trickle" charge. Your charger may have the 6 amp charge rate also. The amp meter on the charger will indicate a lower and lower reading as the battery is charging and accepts the charge. An Auto Zone can "load test" your battery for free if you can get it to one of their stores. Your battery sounds weak and needs a good charge (be patient...it takes time) or needs replacing.