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10 votes
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How do I keep an idle/unused battery ready for immediate use?

Similar batteries are used for motorcycles, and many people don't use those very often at all. They sit in the garage for months at a time until the weather is just perfect for that 20 minute ride. ...
JPhi1618's user avatar
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2 votes
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Trying to purchase correct power inverter for long trip, confused by the specifications

All power ratings are max ratings on the devices. The DC converter 300W output suggests it will power a device up to 300W - the laptop PSU is certainly below that. However the DC converter max output ...
PeterM's user avatar
  • 191
2 votes

How many amps will an inverter take from a battery connected to a car?

This depends on the load you connect to it. The Formula is P=U*I Meaning that if you draw P=2000 Watts and on you primary side you have U=12 Volts you will need I= ~167 Amps + any inefficiencies ...
Daniel's user avatar
  • 1,072
1 vote

What are some installation best practices of a higher-wattage, pure-sine inverter to connect to pre-April, 2016 Model S Tesla?

One problem I learned after reading about Tesla's DC-DC converter. Apparently Tesla is accounting for all current draws in software and adding these up. If the current draw from DC-DC converter isn't ...
juhist's user avatar
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1 vote
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What is the best price-to-value 2000 w pure sine inverter for a mid-2015 Tesla Model S with a DC-DC inverter?

This forum is not the proper place to ask for shopping recommendations. But here are some criteria for pure sine wave inverters you may be interested in: Wattage (you specified 2000 W already) Size ...
juhist's user avatar
  • 14.6k
1 vote

Help - camper van electrics

No, you should not connect your 12 volt loads to one of the inverter batteries, as that battery will be discharged more than the battery used only by the inverter. When recharging the batteries, the ...
Peter Bennett's user avatar
1 vote

Dual alternator installation

What you're doing is very similar to a marine electrical system. Since you're only planning on pulling 30 A from the alternator for charging the battery, I'm assuming that all or most of the time the ...
dlu's user avatar
  • 14.5k
1 vote

Running inverters from Hyundai Ioniq EV's 12V 180 watt rated sockets (two of them)

What caused your sockets to overheat and then melt the support was drawing too much power and possibly loose / poor connections. I would not use those sockets for any thing more than charging a ...
Solar Mike's user avatar
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1 vote
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Running inverters from Hyundai Ioniq EV's 12V 180 watt rated sockets (two of them)

You are right, the thickness of your extension cords is not what melted your car's sockets. There was some other issue, such as the inverters exceeded the 180 watt rating of the socket, or the ...
Carguy's user avatar
  • 1,967
1 vote
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Cigarette lighter fuse repeatedly blows when connecting car inverter

So that inverter is a 150W output model. Assuming it's 90% efficient (that's probably a high guess) that means it takes 167W input. At 12V that is 14A. What's the fuse capacity on your lighter ...
jwh20's user avatar
  • 12.1k
1 vote

Why doesn't the AC inverter support my laptop?

Most likely the initial current surge needed by the power adaptor exceeds the inverter limit so it shuts down. Only solution is to get a better inverter.
Solar Mike's user avatar
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1 vote
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Is the 3 pin plug provided in a cigarette lighter port inverter (12v-220) actually grounded?

Well, it may be technically “grounded” to the car but the car is on “rubber” tires so it won’t be grounded in the classic sense. However, a laptop needing “active” grounding sounds a bit curious... I ...
Solar Mike's user avatar
  • 34.6k
1 vote

24v Inverter configuration help

That configuration would yield 24 volts to the converter, but there will be a HUGE spark and possible battery explosion if you close that switch. You need a battery isolator - you should peruse ...
SteveRacer's user avatar
  • 12.4k
1 vote

24v Inverter configuration help

Don’t do this : if you close that switch on the grey wires you show you directly short the two batteries together. Where are the series connections that you think will allow the alternator to charge ...
Solar Mike's user avatar
  • 34.6k
1 vote

USB car inverter keeps burning out?

Are you sure your 12V battery is healthy? A Prius starts its engine with the high voltage battery, needing the 12V battery just for booting up the computers. Needless to say, computer boot-up doesn't ...
juhist's user avatar
  • 14.6k
1 vote

USB car inverter keeps burning out?

The first thing I'd do is to get a multimeter and check the voltage you're feeding into the inverter. Is it one of the sort that plugs into the lighter socket? If so, check the voltage between the pin ...
Nick C's user avatar
  • 28.8k
1 vote

Use electric vehicle as a mobile power source

This sort of vehicle to load capability is now something you can purchase with your electric vehicle. I’ve seen several providers at a variety of capabilities including the Ford Lightning at the high ...
Bob Cross's user avatar
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1 vote
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Use electric vehicle as a mobile power source

This isn't something you do yourself. The 12V system even at 100% efficiency would require about 250 amperes of current to provide 3000W. At lower efficiency, it's closer to 300 amperes. I don't think ...
juhist's user avatar
  • 14.6k
1 vote

Limiting power from inverter

You can't really easily limit current draw from the car, but the cooker may draw less current when the environment is relatively warm.(room temperature) The rated current may be true for a lower ...
Bart's user avatar
  • 2,954
1 vote
Accepted

Limiting power from inverter

So, just run a fused supply from a suitable point for that device.
Solar Mike's user avatar
  • 34.6k
1 vote

How many amps will an inverter take from a battery connected to a car?

Remember that the inverter will only draw as much power as your drawing from the inverter.(plus some 10-20% extra) If it's rated at 2000W but you never use more than 50 there's no problem. I presume ...
Bart's user avatar
  • 2,954

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