While testing my latest train GBC module I needed a fresh battery - so I selected a spare one from my stock that already contained batteries.

I found all  the batteries were leaking as shown on image. I used Alkaline batteries in the past but now use re-chargables.

IMG_6574 by Doug Ridgway, on Flickr

Now checked all my display models and found others that also showed signs of leaking.

Now removing all batteries from my display models to prevent any damage to them.

Edited March 10, 20195 yr by Doug72

This is very common. I had this happen to my 8475 RC reciever unit. It's all repaired now though. 

Even Duracells... Seems you can best use a vinegar solution to clean the mess.

Just in case you`re looking for a true 1,5 volt AA alternative battery and missed this thread NiZn rechargeable battery, high voltage

Its basically the newest and greenest high density storage around now. Worth a look, works great for Lego Users.

I had rechargeable batteries leaked too.  General rule of thumb, take the batteries out of the device if you're not going to use it for a long time. 

 

Opened up the battery box from my 42030 and this is what was inside 

Now getting all the batteries taken out of my PF sets and spare battery boxes. Shudder to think what’ll be found.

 

I've noticed this on a few occasions too, although only with the AA boxes not the AAA boxes. I used the same brand alkaline batteries (Kodak MAX) in all the boxes.

Just now, emielroumen said:

I've noticed this on a few occasions too, although only with the AA boxes not the AAA boxes. I used the same brand alkaline batteries (Kodak MAX) in all the boxes.

This was from a set I bought used. I usually use Duracell Ultra or Varta Industrial AA’s in mine as they’re guaranteed leakproof for upto 10yrs (the key word here is ‘upto’). Until now I’ve had no reason to doubt these claims but I’ll have to see what’s inside my boxes when they’re checked.

1 hour ago, grum64 said:

Opened up the battery box from my 42030 and this is what was inside 

Well, you used JCB batteries in a Volvo loader, Grum! What did you expect? 

Just now, Maaboo35 said:

Well, you used JCB batteries in a Volvo loader, Grum! What did you expect? 

  

56 minutes ago, grum64 said:

...Duracell Ultra or Varta Industrial AA’s in mine as they’re guaranteed leakproof for upto 10yrs (the key word here is ‘upto’).

So technically they are also guaranteed leakproof upto a thousand years? Good marketing, but not so good batteries apparently.