I just recently came across some old ( about 12 months old but never used ) ego twist batteries that I had stored away for a rainy day.. they are black color which I know are powder coated as I have seen some in a terrible mess if juice is not cleaned off them. Each battery had a coating of some sort of gunky type scum that you could scrape off with your finger nail.. I do reside in Cambodia which is a very humid and hot environment. The scum is on the exterior and when scraped off it doesn't actually scrape off the black powder coat just this gooey type sticky scum. Have tried to clean them but seems near impossible. It's no big deal really but just wondering if anyone has some imput about this. They were in perfect condition when purchased so just wondering how\why this occurs...I have seen this before with some white regular pen style evod batteries also.
EGO TWIST BATTERY SCUM
- Thread starter robshep56
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The one ego twist battery I've got actually has some kind of rubberised coating which I'm pretty sure isn't powder coated. Maybe you should give your batteries a rub down with some disinfectant as it sounds like you've got some kind of fungal growth going on.
Barring you spilling something on them I can't see what you describe as a "gooey type sticky scum" as coming from anywhere but a leaking battery so they are most likely not usable.
Welcome and glad you joined. Could be some type of anti oxidation coating.
Could try to clean with a little Isopropyl alcohol and see if the condition is helped.
I suspect it is a rubber type of coating that has degraded over time into a gooey form. I've seen it with some soft plastics before.
You're ego battery scum, as mentioned already is most likely the rubber coating breaking down in that tropical climate-think about what happens to rubber bands stored in the heat of the tropics-they just turn into goo gooo doo doo !! If you find the battery's work just fine, scrape them off and refinish to your own preference or color
Plastic degradation, or mold, or both.
Thank you for the new insult (from the title), I shall use it well.
Thank you for the new insult (from the title), I shall use it well.
Reminds me of PC master race vs Console peasants. 
"Li-ion master race vs Ego twist battery scum"
"Li-ion master race vs Ego twist battery scum"
All we need to do is insert the word "Vaporfi" and/or "Blu" and the title makes supreme sense.
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