20 Most Recent Schumacher 400w Power Inverter Questions & Answers

This unit will assume a battery voltage less than 1.5 volts means the battery is sulfated. The flashing yellow light means it has gone into 'desulfate' pulse mode using pulses of high voltage to try and convert the lead sulfate back into sulfuric acid and lead plating. It will do this for about 8 hours on the charger I have. If the voltage has not raised to a level that can can accept a normal charge it will abort the pulse mode and stop trying to charge it. You will need to unplug and replug in the charger to try again. Always check the temperature of the battery while charging it and especially if the charger is in pulse mode. Stop charging if the battery is hot. *always wear safety gear*

Ah, I see, it seems what you have is a power pack. If so it would contain a gelcell battery, probably 12 volts. If this is true, then you may charge it with any 14-16 volt wall charger. You have to make sure you observe correct voltage and correct polarity when connecting up. Also you may have to obtain and change the plug on the charger wire.
I'm assuming the battery DC output is inverted to AC and you use it to power small AC appliances.

It's not supposed to. It changes DC to AC.

will not charger the batterys

Yes.

Here is a link to your manual.
http://manuals.batterychargers.com/manuals/00-99-000854.pdf

Question edited for clarity. Question moved from Cars and Trucks. Your don't provide a model number, just a generic name. You can Google 'Schumacher (model) wiring diagram', or in this link contact Schumacher direct. https://www.google.com/search?q=schumacher+power+pack+instant+power+wiring+diagram

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most inverter devices will charge in the off position

With inverters and generators, the power rating is usually off by about a quarter. Watts and volt-amperes are totally different and sometimes inverter manufacturers don't tell about the difference. A basic rule of thumb is to take whatever the inverter is rated for and knock a quarter off. So, in your case it would be best to assume a maximum rating of 1500 watts. Also, inductive loads like drillers (electric motors) usually have a start-up current 3 to 8 times the rated operating current. Meaning that 100 watt driller will draw 300 watts to start up. So, if you use an electric motor rated at 700 watts, its startup load would be 2100 watts or even more and thus trigger the inverter overload switch. Hope this helps you.

i normally mount it under my seat run one lead straight to the positive (red) lead of battery with a 30 amp fuse using an inline fuse holder fully sealed.than the ground (black) using a ring connector to the chassis or seat mounting stud.must run positive under carpet and through fire wall using a grommet or other possible wire channels.

It appears to be something to do with this https://www.google.com/search?q=keb+12f5+that+shows+E.EF+external+fault 7.13.1.6 External fault With Pn.04 "Ext. fault input selection", one or more digital inputs can be programmed which can trigger the error "31: ERROR! External input" (E.EF). With Pn.03 "E.EF stopping mode" , the response of the inverter to the digital input is defined. With Pn.65/ bit 1 "2: Pn.04 = E.UP https://www.keb.su/doc/Instrukciya%20F5-A_E_H%20ver.4.0%20(ang.).pdf ..

Back in 2014 it wasn't so easy. Laptop with an HDMI port and a smart television with HDMI. ..