12 volt deep cycle batteries
Submitted: Tuesday, Apr 29, 2014 at 07:31
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johno59
Good morning all, I have a 12 volt deep cycle battery and we run a tv lights and a few other appliances. Does anyone know how much power a small tv uses. At what voltage level does a battery drop to before it can no longer deliver power johno
Reply By: Member - John and Val - Tuesday, Apr 29, 2014 at 08:08
Tuesday, Apr 29, 2014 at 08:08
Johno,
The TV - depends on size, but probably not over 2 amps for a small one on 12 volts. If it has an external power supply for mains use,
check the current rating of that supply - it will give you some idea. Another obvious option is to measure the current! I assume you have a multimeter if you are measuring voltages.
What voltage can you reasonably run a battery down to? Depends how much you value it. You could repeatedly run it down to 10.5V a couple of hundred times, or to 11.5V a couple of thousand times. Just how long you can draw power depends on the size of the battery. There really isn't a useful answer to "At what voltage level does a battery drop to before it can no longer deliver power".
Suggest you might find
Electricity for Camping a useful read.
Cheers
John | J and V
"Not everything that can be counted counts, and not everything that counts can be counted."
- Albert Einstein
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Follow Up By: Member - bbuzz (NSW) - Tuesday, Apr 29, 2014 at 19:55
Tuesday, Apr 29, 2014 at 19:55
If you are
free camping and using your 12v appliances, turn off the TV and read a book.
No need to worry about your battery then.
bill
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