26 October, 2014

How to Build a battery for a Krautkramer USM 25 ultrasound equipment

Krautkramer USM 25 ( source )
Today was the challenge ahead: Search spare parts for rechargeable NI-MH battery 4.8V of anultrasound machine Krautkramer USM 25 Nr. 35274. 

The price for a spare rechargeable battery from the brand owner, GE, was outrageous, so I had to find a way to manufacture it and save good money. This battery is disarmed: 

It has 4 rechargeable batteries 1.2 V each; 1.2 * 4 = 4.8 Volts, wrapped in plastic and a PVC tube outside
The problem I couln´t find the appropiate battery with those measures; about 43 mm. . x Ø22 mm, but thanks to wikipedia and looking at types of batteries , I located your name: Sub C.
It's funny, because it takes a piece of PVC to separate one of them, I guess to make it harder to replace (spare parts worth their thing). And they go into a plasticized PVC cartridge.

I was just searching the internet for a Spanish supplier for this type of battery; they had to be Ni / MH and the largest capacity, or have very little autonomy equipment (stack consume outrageous). I found two, one French "bateriasbaratas" or something, and another, Wildfire Batteries in Madrid.
I have already asked 8 units for a fraction of what the manufacturers asked to be paid.

Well... now I just have to wait for them to arrive and manufacture it as I have done beforewith other batteries ; I will add photos when.
07.03.12 Sub C batteries arrived; confirm that they are the same size (by persfectiva camera may seem a little different, but they are equal) that has both plastic protection as the other:

To solder batteries with other must trim excess metal where they go and scrape together something (eg sandpaper.) To apply heat, and then joined estañarlas. (If you have doubts find a tutorial on 40W soldering welder and tin.)
In the long piece of metal appears to contain some sort of protection (to protect against reverse polarity perhaps); pay it again respecting polarity:

Place the separator PVC cylinder and look like this: 

Negative with positive soldered to place in series trim excess metal, and finally, to improve the contact of the positive, I have a glob tin soldier: 

And finally get back to the 4 batteries in PVC and look cannulated with a little duct tape, and cheap energy !! 

1 comment :

  1. "Bringing Dead Batteries Back To Life Is Simple!"


    "Save Money And NEVER Buy A New Battery Again"

    "Bring Nearly Any Dead Battery Back To Life Again"

    Over 19,000 people are already using the EZ Battery Reconditioning Method

    "Make thousands by purchasing old batteries and selling them as reconditioned ones for massive profits"

    And it doesn’t matter if you’re not technical or don’t know the first thing about batteries …because our course is incredibly easy to follow and absolutely anybody can use it.

    For more info please click on the following link: "Bringing Dead Batteries Back To Life Is Simple!"

    Talk soon.