i have a Peak jumper pack that is a compressor too. stopped using it a year or so ago as one of the features didnt work, i presume the compressor but i forget. anyway, i wake up today to a steady high pitched noise coming from it. for the fun of it i plugged it in for a second and the pitch momentarily changed. i also tried turning each function on and off and nothing changed. the battery charged life shows nothing when i press the button. no easily determined way to pop it open and disconnect the battery either

i put it out in the breezeway in case it explodes or something but what the heck is this noise?

 

Could be a cooling fan...................

 

didnt know they had them. will have to look for 'fins' on the outside then

 

nope none............weird

 

Maybe some type of low battery warning. Is there a model number on that Peak booster ?


From their website....
That's probably what you are hearing with a low battery. Maybe charging it for a while will take care of it. If not the battery may be on it's last legs.

 

so if i plug it in it wont blow up or anything? just weird sitting in closet over a year and all of a sudden does this and turning any switch on or off doesnt affect it. my bet is the compressor died as i did buy a new one last winter. wouldnt have done that unless i was broken

pkcobj is the model

 

day 2 ...no signs of letting up. when i finally go back to work ill have to put it in the yard away from the house

 

Probably the low battery alarm
I have a Peak jump starter and they have a little plug (Which always falls out and gets lost) to enable the low battery alarm. To disable the alarm you have to put that little plug back in which as I said probably got lost

Looking at you model the low battery disable plug is right below the charging jack

 

oh it was in. but not firmly...stopped now..thanks...amazing. so the battery was good for over one year without any use, pretty wild