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Old 2nd January 2018, 09:55   #166
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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Originally Posted by Ketan View Post
Hi Guys,

I'm looking forward to operate a couple of things while on road, 1> kettle for hot water, 2>small blender for smoothies, 3>Another kettle that can be used for pastas/soup etc..

I'm trying to drop #3 as that device is rated as 1200watts, I'm already using #1 that is from the tropicool, for years and its working just fine.
I have got the 300watts inverter from tropicool and its working fine for notebook/phone charging and anything for that capacity.
I'm trying to add the ability to use #2 which is rated at 400watts. I'm looking forward to add the other inverter from tropicool (below) that allows 1000watt devices, but seems it needs 24v dc input. While I understand the car battery will provide on 12v dc.
Any ideas how to achieve the 24v dc input if I'm planning to use this device on road trips??
I am afraid I am a little late to the party. It has been mentioned in this thread so many times that for cooking, heating purposes on the road,you would be better off using a small gas stove than trying to squeeze 1000 W out of your car.

Here is why (at the risk of repeating): 1000 W requires about 100 A from the battery/Alternator of your car. You are looking at least an alternator capable of supplying 120 A or above - unlikely in your car.

Car electrical system is designed for the specific car needs + some additional capacity to supply ICE etc. Massive dips in the supply line can cause havoc with ECU.

As for #2 : Small blender for smoothies : Look for one rated at around 150 VA and the existing 300 W inverter will be happy to supply this requirement without breaking into a sweat.
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Old 4th January 2018, 00:44   #167
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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Originally Posted by Prowler View Post
I am afraid I am a little late to the party. It has been mentioned in this thread so many times that for cooking, heating purposes on the road,you would be better off using a small gas stove than trying to squeeze 1000 W out of your car.

Here is why (at the risk of repeating): 1000 W requires about 100 A from the battery/Alternator of your car. You are looking at least an alternator capable of supplying 120 A or above - unlikely in your car.

Car electrical system is designed for the specific car needs + some additional capacity to supply ICE etc. Massive dips in the supply line can cause havoc with ECU.

As for #2 : Small blender for smoothies : Look for one rated at around 150 VA and the existing 300 W inverter will be happy to supply this requirement without breaking into a sweat.
Thank you for the response, sure I'm not going to risk the car battery for these things. I should be okay if I have to get a spare battery that can be used in the car, need to find out the options with the battery seller I usually go to.
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Old 4th January 2018, 03:35   #168
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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Originally Posted by Ketan View Post

I'm looking forward to add the other inverter from tropicool (below) that allows 1000watt devices, but seems it needs 24v dc input. While I understand the car battery will provide on 12v dc.
Any ideas how to achieve the 24v dc input if I'm planning to use this device on road trips??
This is possible by connecting two 12V batteries in series. For a 1000W device to work on battery for 1 hr, you would need two 35Ah batteries. These are the types of batteries seen in small hatchbacks.

What I said above is the theoretical aspect to solve your problem. In practice, you need to spend the money for two batteries, find the space to store it properly, and finally a provision to charge these batteries.
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Old 4th January 2018, 09:41   #169
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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Originally Posted by knightrider_7 View Post
This is possible by connecting two 12V batteries in series. For a 1000W device to work on battery for 1 hr, you would need two 35Ah batteries. These are the types of batteries seen in small hatchbacks.

What I said above is the theoretical aspect to solve your problem. In practice, you need to spend the money for two batteries, find the space to store it properly, and finally a provision to charge these batteries.
Theoretically you would need 41.6 A from your 24 V batteries to supply 1000 W device through an inverter (ignoring losses and efficiencies). A 35AH battery would supply this kind of current for only a few minutes. An automobile kind of battery is not designed for deep discharge and hence would die early.

To the OP: How about a small petrol driven generator ? Noise would only be the deterrent.
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Old 19th January 2018, 15:42   #170
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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Originally Posted by knightrider_7 View Post
This is possible by connecting two 12V batteries in series. For a 1000W device to work on battery for 1 hr, you would need two 35Ah batteries. These are the types of batteries seen in small hatchbacks.

What I said above is the theoretical aspect to solve your problem. In practice, you need to spend the money for two batteries, find the space to store it properly, and finally a provision to charge these batteries.
Thank you, I guess these suggestions make sense. I'm thinking of limiting my requirements to current 300W capacity only for now since this may not be an ongoing requirement and may not need a long term solution.

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Originally Posted by Prowler View Post
Theoretically you would need 41.6 A from your 24 V batteries to supply 1000 W device through an inverter (ignoring losses and efficiencies). A 35AH battery would supply this kind of current for only a few minutes. An automobile kind of battery is not designed for deep discharge and hence would die early.

To the OP: How about a small petrol driven generator ? Noise would only be the deterrent.
Thanks, the small generator idea is better it seems, it may take lesser space than the two batteries we were thinking about and car electrical are not touched for this once in a while type requirement.
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Old 17th October 2020, 15:02   #171
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

Car Battery to 220V AC convertor / inverter for charging laptop etc-vantro-inverter.jpg

Have anyone of you used or know anything about this product? Is it reliable?
https://www.vantro.in/product/vantro-power-inverter/ This is their portal.
It seems to be a good product from the reviews in Amazon (https://www.amazon.in/Vantro-Power-Inverter-200W-Port/dp/B07L6B4XH7/ref=sr_1_1?dchild=1&keywords=car+inverter&qid=1602 913552&sr=8-1) and it is economical as well. Only thing I couldn't figure out is its amp value it draws from the car power point. I have asked the same to their customer care and awaiting their feedback.
Kia Sonet owner's manual says any device with amp upto 10A can be used.
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Old 17th October 2020, 18:10   #172
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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Only thing I couldn't figure out is its amp value it draws from the car power point.
Kia Sonet owner's manual says any device with amp upto 10A can be used.
The inverter will draw about 16 A from your car (ignoring losses, efficiencies and loads on USB) when it supplies its full rated load of 200 VA. But depending upon what is connected, it would easily overload your 10 A rating.
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Old 22nd October 2020, 20:55   #173
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Default Re: Car Battery to 220V AC convertor / inverter for charging laptop etc

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The inverter will draw about 16 A from your car (ignoring losses, efficiencies and loads on USB) when it supplies its full rated load of 200 VA. But depending upon what is connected, it would easily overload your 10 A rating.
Thanks! I get the 16A calculation - so if I connect only a laptop charger of 90W/2.5A to this inverter, will that create any problem? Upto 120W is safe on the power point (12V x 10A) with this rating isn't it? I mean the inverter rating of 200W is the maximum it can support and the rating of device we connect to it directly affects the power point rating - is that a correct understanding?
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