how long will the battery last.
2007-03-24 00:17:59 · 6 answers · asked by hankster 1 in Cars & Transportation ➔ Boats & Boating
It will last until the battery is discharged.
2007-03-24 02:34:35 · answer #1 · answered by Wally T 3 · 0⤊ 0⤋
First of all, I have to wonder if a 300 watt invertor is big enough to run a 115 VAC refrigerator. At 1.5 Amps, that is about 200 watts, but the surge when the compressor kicks on is nearly 4 times that and will be nearly twice that when it's running.
I have a small 300 watt invertor that is isolated from the house batteries and I run a florescent work light on it and a fan and the deep cycle battery it's attached to will last about 3 hours before the voltage drops so low the blower comes on and the lights go out.
2007-03-24 10:38:19 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Not enough information here to answer your question. What is the capacity of the battery in amp hours? How much current does the inverter draw on the 12 V side?
Let's guess. 115 V X 1.5 A = 172.5 Watts
Let's assume your inverter is 90% efficient it means you need 192 Watts to run it.
At 12 V 192 Watts is 16 amps
Let's guess you have a 100 amp hour battery, it will run it for 6.25 hours from fully charged to completely flat. Of course the real time will be slightly less. You will need to adjust this time depending on the actual capacity of your battery and efficiency of your converter.
I hope this helps a little.
2007-03-24 07:26:21 · answer #3 · answered by teef_au 6 · 0⤊ 0⤋
300 watt inverter is to small
2007-03-24 13:43:22 · answer #4 · answered by pfiftyonemustang 1 · 0⤊ 0⤋
here's a review of them from ebays reviews & guides.
2007-03-24 10:20:29 · answer #5 · answered by dan m 2 · 0⤊ 0⤋
very confusing subject. lookup at google. just that could help!
2014-11-28 06:55:59 · answer #6 · answered by ? 3 · 0⤊ 0⤋