Watts Help Needed.
I am trying to figure out how long a battery will last. I have Googled it and read a few sites but I still have a few questions. I have a small TV that I plugged into my Kill a Watt meter. That sho...
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Let me see if I am understanding all this.
I'm forgetting the coffee maker. At this point I will use the battery for my TV(22 watts) and two cell phones at about 7 to 10 watts each and maybe my latop at 40 watts. Total about 82 watts.
Let's say I get a battery with 100ah. I assume I could run 1 amp for 100 hours but that would take the battery down 100%. The best from what I have read was use down to 80% but I could do down to 50% but that the battery would not last as long.
Based on my 82 watts that would be 6.8amps. Lets throw in another amp and round it to 8amps.
80% of the battery would give me 20ah so I could run for 2.5 hours using 20 amp hours. Would charge time = 2 hours at 10amps and 4 hours at 5 amps?
50% of the battery would give me 50ah so I could run for 6.25 hours using 50 amp hours. Charge time = 5 hours at 10amps and 10 hours at 5amps?
Thanks everyone
Jim
I'm forgetting the coffee maker. At this point I will use the battery for my TV(22 watts) and two cell phones at about 7 to 10 watts each and maybe my latop at 40 watts. Total about 82 watts.
Let's say I get a battery with 100ah. I assume I could run 1 amp for 100 hours but that would take the battery down 100%. The best from what I have read was use down to 80% but I could do down to 50% but that the battery would not last as long.
Based on my 82 watts that would be 6.8amps. Lets throw in another amp and round it to 8amps.
80% of the battery would give me 20ah so I could run for 2.5 hours using 20 amp hours. Would charge time = 2 hours at 10amps and 4 hours at 5 amps?
50% of the battery would give me 50ah so I could run for 6.25 hours using 50 amp hours. Charge time = 5 hours at 10amps and 10 hours at 5amps?
Thanks everyone
Jim
