Battery Charger Hiss

[Jet]

Hi Guys,

I'm sure this is a stupid question but....
Just got a new Tustfire TR-001 charger and two AW IMR 18650 batteries and I've noticed that there is quite a loud hum/hiss noise when charging. Never noticed this before on my previous TR-001 charger but I have only ever used small batteries before. Just wanted to make sure this was normal as I know a lot of the issues battery issuce happen during the charging process.

Thanks,
Jet

 

[killovicz]

I never had any issues with mine, had it over a year perhaps 2, I highly doubt that any sound coming from the charger is normal.

Here is what Rocketman had to say about it on a same issue just another thread...

It is most likely the charger making the noise. The DC to DC section of the charger operates at a high frequency. Although too high for us to hear, it can mechanically vibrate internal components at a frequency we can hear. It is most likely when charging current is the highest, often noticed with IMR cells. Some folks may recommend getting a Pila charger that moves that part of the circuitry to a wall wort .

Monitor termination voltage when charging is complete (with the voltmeter you have, or will SOON have ), and watch the charger/cell for abnormal heat.

 

[denali_41]

i would contact the vendor and get a replacement,from what you saying that is beyond normal..

i seem to remember there being a lot of problems with that specific charger back in january

better safe then sorry

 

[doots]

I would keep an eye on it. I have several of these chargers and have never heard any sounds coming from them charging any type batts. Just to be safe, Id not leave the house with them on the charger but just keep a close eye on it. If it is new, Id ask for an exchange for a new one..

 

[NickZac]

The transformer is likely failing. I would not use this even though many people report this to be 'normal', as it is most certainly not.