Bravo pump off makita battery

simonafloat · 26 May 2022, 21:45

Hi all, trying to make a really portable inflator setup for my little avon inflatable. I've got a 12v bravo pump that i've had for years, used to use it on my old aerotec sib. Any idea if a makita 18v LXT battery would be too 'hot' for it? Also what sort of current do they draw? If i knew that i could make a voltage drop circuit. Cheers all

909 · 27 May 2022, 02:07

You will fry your Bravo

3 x 18650 cells will work

These were pulled from a Dewalt

simonafloat · 27 May 2022, 06:57

Quote:

Originally Posted by 909

You will fry your Bravo

3 x 18650 cells will work

These were pulled from a Dewalt

Thanks, i did think the voltage would be a bit much. Shame as i'm a carpenter and all my gear is makita so i've got loads of batteries kicking around.

TmMorris · 27 May 2022, 07:23

All the tool batteries I have are 18v so would not run my 12v pump for long.

Someone on here, possibly Fen, suggested using a mobility scooter battery which is what I've done and it works perfectly. Small, affordable battery that fits in one of the compartments my pump came in.

I like the idea of using tool batteries on the basis that I generally like things like that to do as many jobs as possible. If it's simple and safe to make a dc-dc converter and not using a method that ditches the 6v as heat then it's a smart idea.

Given how much kit is 12v and how popular 18v tools have become then it wouldn't surprise me if people have already done this.

Steve509926 · 27 May 2022, 08:21

Morning Tim, first picture just right of the bag, should hide that habit

I'm another for a small mobile scooter battery, works well for me.

TmMorris · 27 May 2022, 08:47

Heroin & power tools. What can possibly go wrong?

Re the step down dc-dc converter buck, the concept has already been done but it seems to be one of those things that is on sale in the US but no one is importing to the U.K.:

https://www.amazon.com/Battery-Regul...3634187&sr=8-4

Would actually be quite a useful device to have in general.

TmMorris · 27 May 2022, 08:49

That said, there seem to be a few:

https://www.amazon.co.uk/s?k=Battery...ref=nb_sb_noss

Edit to add:

In fact they appear to be a common product once you find how to search for them. This is the Ryobi one:

https://www.amazon.co.uk/Battery-Ada...s%2C59&sr=8-12

I might get that as I can see it just being one of those useful things.