Battery Question ; time watching TV
I know very little about electricity...... I do a lot of car camping and want to run my 35" flat screen TV and DVD player by using a 12v deep cell battery with a 300 watt inverter and NOT a gas gener...
Forum Discussion
Summing up various correct replies...
Add up the watts or amps the items use.
If amps, multiply by ten to get amps at 12 volts.
If watts, divide by 12 to get amps at 12 volts.
The sum will probably be higher than what will actually be used, but anyway.
The inverter will consume additional amps, maybe it balances out with the previous over-estimate.
Let's say it is 72 watts / 12 volts = 6 amps.
For an hour, that is six amp hours.
Group 24 & 27 batteries are 85 & 105 amp hours respectively. Don't run them to empty or they won't last long. So depending on how you want to treat your battery, at 6 amps you could do 8, 12, 16 hours?
Hopefully this is good enough info.
Add up the watts or amps the items use.
If amps, multiply by ten to get amps at 12 volts.
If watts, divide by 12 to get amps at 12 volts.
The sum will probably be higher than what will actually be used, but anyway.
The inverter will consume additional amps, maybe it balances out with the previous over-estimate.
Let's say it is 72 watts / 12 volts = 6 amps.
For an hour, that is six amp hours.
Group 24 & 27 batteries are 85 & 105 amp hours respectively. Don't run them to empty or they won't last long. So depending on how you want to treat your battery, at 6 amps you could do 8, 12, 16 hours?
Hopefully this is good enough info.
