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Building a DIY battery pack for stobes/lighting on location

scotty99 11 124
28 Mar 2014 9:06PM
I used to have one of those Innovotronix explorer XTs a few years back, which died on me (out of warranty!) After a break from photography, I want to get shooting again using my flash heads Bowens 500ws on location where there is no mains power, but cannot afford a battery pack (Innovotronix has doubled in price from when I bought one)

I came across I few articles on making one, as they are basically a pure sine wave inverter/car battery.Just wondering If anyone has made one, or if any sparkies can give me some specs to look for, as the articles are mainly using US/non UK components/wattage. Would like to have one to power poss 4x 500w heads, which would need a peak output of 2000w sine wave inverter. Link below to explain better than me!!


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thewilliam 9 6.1k
29 Mar 2014 2:58PM
In the interests of Elfin Safety, I'd advise you to buy a ready-made mains inverter and connect it to a 12v "leisure" battery from a caravan supplier. Leisure batteries are designed to be carried around and generally have handles for this purpose. Car batteries are designed to give the many hundreds of Amps needed for the starter motor for a short time but don't usually store a lot of energy.

The other possibility is a petrol-powered generator but feed your flash kit via an AVR (automatic voltage regulator) so that voltage spikes don't kill your valuable kit.
Paul Morgan 16 19.1k 6 England
29 Mar 2014 3:02PM
I once converted one of those un interuptal power supplies designed for PC backup, it worked well for a while.

The worst bit was disabling the speaker to stop it bleeping.
scotty99 11 124
29 Mar 2014 6:27PM
Cheers for the replies, much appreciated. Yep I'll look into a leisure battery, thanks for the heads up regards health and safety Wink. Will have to look into adding a grounding to it, being diy and all
scotty99 11 124
5 Apr 2014 12:13AM
Looking at this inverter to power 2x500w bowens heads.


What size battery would be suitable to run this inverter, thinking something like this


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