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Best 12V to 230V transportable power solution

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ELEFANTOMET

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I need some kind of battery/power bank to provide 230V for some measurement equipment/laptop etc. that preferable doesnt weigh a ton like a car battery, and can last at least as long as a car battery but preferably longer.

Anyone has some suggestions/experience with solutions to look for?
 

Hi,

size depends on stroed energy.

But you tell nothing about the amount of energy you need. Therefore it is impossible to give a good answer.

Klaus
 

Your right about that sorry.

I need to power devices with a total consumption of 125W for either 4-5 hours(using two battery packs to reach 9-10 hours) or 9-10 hours on one battery pack
 

Hi,

so simple calculation:
W x h = Wh
You need 125W x 10h = 1250 Wh

a battery with 12V:
V x A = W; W / V = A; Wh / V = Ah
1250Wh / 12V = 104Ah

But these calculations are "best case" calculations with 100% efficiency.
Add at least 20%-25%: --> 130Ah

--> you won´t carry a 12V 130Ah lead acid battery 1000m up a hill.

Klaus
 

I just looked it up and a deep-cycle lead-acid battery with a C/5 capacity of 105Ah weighs 30 kg.
 

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