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Yes, you can use jumper cables to charge a 12V 4Ah battery with a 12V 5Ah battery, provided the 5Ah battery is fully charged. Connect the positive terminal of the charged battery to the positive terminal of the 4Ah battery, and the negative terminal of the charged battery to the negative terminal of the 4Ah battery. However, this method is not ideal for charging as it may not provide a controlled charging rate, which can potentially harm the batteries. It's better to use a proper battery charger for safe and effective charging.
What else can I help you with?
Can a 12v battery be charged by 6v supply?
No, you need at least 12v to charge 12v. Most alternators charge at 13-14 volts.
Can a12v 800ma adapt be used in place of a 12v 500ma adapt?
For power supplies, if the voltage is the same, the rated amperage is equal to or greater than the requirements of the device, and the plug fits, the supply is safe to use.
Can you charge a 12v lawnmower battery with a 12v car battery?
can a 12v lawn mower sealed battery be charged with 12v battery charger use on cars
Can you charge an 18v battery with a 12v charger?
No.
Can you charge a 24v battery with a 12v charger?
No
How long does it take charge a 12v motorcycle battery with a 12v car charger?
Depends on the amperage of the charger. A 10 amp charger will charge it in about 1 hour.
Can you use a 12V 7AH charger to charge a 12V 120AH battery?
Yes it will work quite well.
Can you charge a 12V battery with a 24V battery charger?
No
Can a12v 10ah barttery be used in a ups that's supossed to use 12v 9ah battery?
Yes, a 12V 10Ah battery can be used in a UPS designed for a 12V 9Ah battery, as it has the same voltage and a higher capacity. This means it can provide power for a longer duration without overloading the UPS. However, ensure that the physical dimensions and connectors of the 10Ah battery fit the UPS properly. Always check the manufacturer's specifications to confirm compatibility.
What could be wrong with a 98 Montero if it will start with a jump but dies as soon as the jumper cables are taken off?
Past experience would suggest an alternator. This is symptomatic of a totally dead battery. Charge the battery first. Try to fire it up again and if it runs now put a voltmeter on the battery while it is running. If the voltage shows as 12v or LESS then it is NOT charging. A properly charging system will show at least 13 or more DC volts.
What if you use a 12V 1.5mA power adapter in place of 12V 1.2 mA one?
It will take longer to charge the device
Can i charge 2 8v batterys with a 12v charger?
No you can't.
