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#1
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15 AMP adaptor
I found a 15 AMP adaptor that converts 220 V AC from mains into 12
DC current at a shop. My question is will this adaptor be able to charge a 140 AH 12 V battery? The shopkeeper doesn't know anything about it. I'm not concerned about over charging or anything like that just will it charge it? My understanding is that the voltage from a charger should be slightly higher than 12 V if it is to be able to charge a battery of 12 V?? --- news://freenews.netfront.net/ - complaints: --- |
#2
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15 AMP adaptor
Sicilian Dragon
wibbled on Saturday 03 April 2010 13:55 I found a 15 AMP adaptor that converts 220 V AC from mains into 12 DC current at a shop. My question is will this adaptor be able to charge a 140 AH 12 V battery? The shopkeeper doesn't know anything about it. I'm not concerned about over charging or anything like that just will it charge it? My understanding is that the voltage from a charger should be slightly higher than 12 V if it is to be able to charge a battery of 12 V?? --- news://freenews.netfront.net/ - complaints: --- Lead acid car/truck battery? If so, those are typically charged to around 14.5V give or take, so you need a little higher open circuit voltage to succeed. How powerful is the "adaptor" (eg wattage, VA or output current rating)? -- Tim Watts Managers, politicians and environmentalists: Nature's carbon buffer. |
#3
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15 AMP adaptor
Sicilian Dragon wrote:
I found a 15 AMP adaptor that converts 220 V AC from mains into 12 DC current at a shop. My question is will this adaptor be able to charge a 140 AH 12 V battery? The shopkeeper doesn't know anything about it. I'm not concerned about over charging or anything like that just will it charge it? My understanding is that the voltage from a charger should be slightly higher than 12 V if it is to be able to charge a battery of 12 V?? --- news://freenews.netfront.net/ - complaints: --- Is the adapter regulated to 12V, or is that the nominal rating? If the latter, it should work, but I would certainly not leave it connected unattended. You don't want to come back to find the electrolyte merrily boiling away. Use a multimeter to measure the voltage out of the thing open circuit as well as connected to the battery and check it periodically so it doesn't overcharge. |
#4
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15 AMP adaptor
THE KEYWROD HERE IS EFFICIENCY AS IN THE MORE YOU TRANSFORM A WAVEFORM THE LESSER EFFICIENT THE RESULTS THOUGH A GOOD DESIGNER FINDS A WAY TO COMPENSATE FOR ANY LOSS IN THE PROCESS I AM PROTEUS |
#5
Posted to alt.electronics,alt.engineering.electrical
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15 AMP adaptor
"Sicilian Dragon" wrote in message
... I found a 15 AMP adaptor that converts 220 V AC from mains into 12 DC current at a shop. My question is will this adaptor be able to charge a 140 AH 12 V battery? The shopkeeper doesn't know anything about it. I'm not concerned about over charging or anything You *MUST* be concerned about overcharging. Overcharging can be dangerous and can damage batteries quickly. like that just will it charge it? My understanding is that the voltage from a charger should be slightly higher than 12 V if it is to be able to charge a battery of 12 V?? A lot depends on the type of battery. But in general a simple power supply is a very different beast from a battery charger and using a power supply as-is to charge a battery will be dangerous and/or expensive. -- Brian Gregory. (In the UK) To email me remove the letter vee. |
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