I used this on car audio stereo amp for 3 months or so indoors.   Neat to see amps and such. Shuts off if overloaded.

I put a 12v fan on top for fun it runs 15v no problem.  Such a small package for a charger.  I always made sure it didn't get hot but it seems to cool itself good. Listened for half hour usually.   In truck and room. 

Love it but cash sounds nice.

I got it used on ebay but it looked new but dusty and he didn't label it correctly w efuel brand or anything so I got it cheap.

Its rare.  20 amps max at 15v. 300 watts.

Not sure if it runs at 12v better but I read something on that.  

Also had a dc fan used in ups vans hooked to it 8 amps I think. 

2lb 4.7 oz w cord.

I labeled cord both ends to help identify it.