General > General Technical Chat
Terminal contacts grease substitutes for batteries?
<< < (3/5) > >>
coppercone2:
I never had a problem with silicone dielectric grease.

The spring should push through the grease and make a good contact unless its really really really bad.

For the contacts all you need to do is smear a very thin layer of grease with like a q-tip on the battery face. It should improve the contact. It will flow out of the way of the contact but increase thermal transfer and decrease point heating on the contact surface by conducting the heat.

If you want to try to protect the spring with dielectirc grease, it will look ugly, but it should not effect it electrically. Get a q-tip thats absorbed the grease and push it around the spring to put a film on it if you want to see if it protects it from corrosion. People like pack cavities with the stuff to increase water resistance, but for corrosion protection, all you need is a film.

The only thing you don't want silicone grease in would be like a switch that arcs heavily. Like a low voltage high current DC switch/relay.
Black Phoenix:

--- Quote from: coppercone2 on October 30, 2022, 01:14:26 am ---I never had a problem with silicone dielectric grease.

The spring should push through the grease and make a good contact unless its really really really bad.

For the contacts all you need to do is smear a very thin layer of grease with like a q-tip on the battery face. It should improve the contact. It will flow out of the way of the contact but increase thermal transfer and decrease point heating on the contact surface by conducting the heat.

If you want to try to protect the spring with dielectirc grease, it will look ugly, but it should not effect it electrically. Get a q-tip thats absorbed the grease and push it around the spring to put a film on it if you want to see if it protects it from corrosion. People like pack cavities with the stuff to increase water resistance, but for corrosion protection, all you need is a film.

The only thing you don't want silicone grease in would be like a switch that arcs heavily. Like a low voltage high current DC switch/relay.

--- End quote ---

Same here. Been using it on portable console sliding switches as the Gameboy Advance that I know to oxidise and do a bad connection (making the Power LED flick like crazy from green to red, even with proper new batteries). Just clean it with Isopropyl, apply a very thin film using a small brush and then close it. I have one GBA that I've been using every day for the last 6 years (around 10 circles of ON/Off per day) without any problems of bad connection.
Boris_yo:

--- Quote from: wraper ---As of those batteries on the picture design on the sleeve looks dodgy, cannot see what brand they are.
--- End quote ---

It is BTY brand. Bought them a decade ago on some Chinese website. I almost didn't use them.

(Click to enlarge)



--- Quote from: coppercone2 on October 30, 2022, 01:14:26 am ---If you want to try to protect the spring with dielectirc grease, it will look ugly, but it should not effect it electrically. Get a q-tip thats absorbed the grease and push it around the spring to put a film on it if you want to see if it protects it from corrosion. People like pack cavities with the stuff to increase water resistance, but for corrosion protection, all you need is a film.

The only thing you don't want silicone grease in would be like a switch that arcs heavily. Like a low voltage high current DC switch/relay.

--- End quote ---

So despite that I have the following I should still get dielectric grease for protecting spring against corrosion?

- WD-40 silicone spray
- Random Chinese silicone grease
- Made in Germany silicone grease (as seller claims)


--- Quote from: Black Phoenix ---Just clean it with Isopropyl, apply a very thin film using a small brush and then close it.
--- End quote ---

Were you using silicone grease with or without dielectric properties? Does it matter whether I use a brush or q-tip when applying the layer? A very thin film is what WD-40 silicone spray could accomplish when sprayed on q-tip or brush but is it okay and as good as dielectric silicone grease?
coppercone2:
I do prefer deoxit grease though, because its easy to wipe away. I am not sure if it has the staying power of silicone, but for stuff near microelectronics, at least I can get rid of it with alcohol.

The silicone I leave for like heavy duty hardware

I would recommend deoxit grease, if you can get it, but silicone grease is usually fine. Just when you apply it you need to be really precise. Keep a bag around to throw away contaminated objects. I had fun trying to scrub it off a stone lab table before :palm:
wraper:

--- Quote from: Boris_yo on October 30, 2022, 09:22:34 am ---
--- Quote from: wraper ---As of those batteries on the picture design on the sleeve looks dodgy, cannot see what brand they are.
--- End quote ---

It is BTY brand. Bought them a decade ago on some Chinese website. I almost didn't use them.

--- End quote ---
Explains why they leaked https://www.amazon.com/BTY-Rechargeable-NiMH-Batteries-1000mAh/product-reviews/B003BWAH9I (look on reviews) as you bought complete garbage with fake capacity. https://forum.allaboutcircuits.com/threads/do-not-buy-bty-ni-mh-batteries.117687/
AA/AAA NiMH almost never leak. I've seen some reports of small batteries which are soldered onto PCB leaking, but that's about it.

Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod