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| 11-06-2012, 10:40 AM | |
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Last edited by nico07; 11-06-2012 at 10:54 AM.. |
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The device itself will not be aware if it is directly connected to the battery or connected via a cigarette lighter/aux. |
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As mentioned previously, to get even close to the full 400W rated, you need to use the battery clamps. Otherwise in most cases it's likely that your cig lighter fuse is only 10 amps (maybe up to 20 on some SUV/utility trunks that are meant to take on higher power applications), so your max theoretical output will only be 120W... but plan for closer to 100.
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Watts = Voltage * Amps 400w = 120v * A A=3.3 Max this unit can provide is 3.3 Amps. Factor in for inefficiencies in the device and it probably draws 4-5 amps... This also means that the 2.1A USB port uses 2/3rds of the units capacity (when fully loaded). Many laptop chargers would pass this small 3.3A threshold (and overload the unit). Edit: I think some are confusing the input voltage 12v and using that to determine the units wattage capacity. Last edited by gmanvbva; 11-06-2012 at 11:13 AM.. |
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