HTRC Charger C150 C240 T150 T240 Fan Noise FIX | DIY 

The majority of the noise comes from the guard built into the housing. It's flat plastic so causes a lot of turbulence. I cut the 4 points around the guard to leave a clear hole for the fan and the noise is considerably lower (maybe filing the edges of the guards into curves could help too). You should really replace the guard with a proper metal one but I just left mine - it blows not sucks so nothing would likely catch in there unless I was very careless. That said, the 0/max setup of this fan is dumb and let's down a good unit. The lower speed on your one is more than enough for most uses. A fan that ramps up with the temperature using a thermistor would be ideal and is something I've considered but haven't bothered. Side note, check your cable for a good earth wire. My bundled cable was really cheap and nasty so I replaced it (I have the white T150, not sure if that's newer or older than the black one, I've had it years though)

Thanks for the idea. I added a second fan (in serie), blowing in. It is working very well. I hope this can be useful also : )

If it's a common size like 40mm it might be a good idea to change it to a noctua fan, more static pressure and less noise.

Thx man, helped a lot. I also added some additional fans on the other side using the 16V of the xt60.

I had one i loved it Amazon Recalled all of HTRC T240 Duo charger for to catch on fire so all those chargers are recalled so you want to look into a refund ASAP

If I could give 2 👍 I would.

Do you know how to recalibrate this charger? Many of these chargers have a hidden menu to allow precise calibration using a 6 cell balance connection. If I can find this can be done I will buy one of these and definitely follow you advice with a resistor for the fan. Great video

I have the C150 and while it's feature set is nice, the fact it can't be calibrated and reads voltage incorrectly (albeit only around 150mv), it's not a good investment. Apparently some of the HTRC T-series touchscreen cousins have calibration... a shame it has a USB port supposedly for "firmware updates" and is worthless.

Hello. Can you possibly help me? My fan on this charger is near to its end , and i would like to replace it. Can you tell me what fan i need? (Plug n play). I see you got some experience, thats why ive asked. Cant find any details on the web. Thanks a lot! David

This is a pretty good idea. Tommy.. i have a question. Can the resistor be solder in either way towards the fan of the positive wire(red)?

Can you please post a link for this resistor. Thank and Best Regards.

Hi, do you by chance have another link to this resistor? The one posted does not work. Thanks

How is possible that your voltage in your cells are so low, less than 3.5volts, that battery for sure are bad

Question what could this be, I am very lucky this shit me up, so i was playing path of exile at my computer and right next to me I have two lipos 3s batteries charging into storage mode, they was taking ages lipo storage 90 min+ duration, Then I smelt electrical burning, I paniced and I turned off the charger immediately, I am sure I saw a thin layer of smoke, I then quickly unplugged both batteries and placed them into the lipo safe bag and placed them outside under a shelter, after 30 minutes, I tool the charged to my friends garage and tried his power outlet and the charger turns on and functions but I was too worried to charge a battery, I also inspected the charger for any burns which I saw nothing, and I also inspected the two 3s batteries, I saw no damage i.e leakage, puffing of the cells, or burn marks or any damaged wires, does anyone know what this could be ? is this charger still safe to use, perhaps I should check a battery status on one of the batteries with this charger in the morning ? help please many thanks, p.s the charger is the HTRC C240 Duo.

Have you noticed with this charger that regardless of what the storage voltage you set it to it storage charges to 3.8v per cell? My t240 does this, it's not the end of the world because 3.8 is a fine storage voltage but why bother putting an option to change it if it still goes to 3.8v

Quick question wouldn't that slow down the discharge? It was my understanding that the charger uses the fans as part of the discharge process.

How did this hold up over time? Serious question cause I plan on possibly purchasing the c150

Nice, I just got the T240, and will need to do this. Have you tried a 10A charge? I only get 8.8-8.9A max with DC or AC input. I'm thinking its actually 120w, so 120w divided by the voltage (13.3v in my case) gives around 9A, or 8.8 with normal conversion losses.

I have the same charger the fan is going out . I just want to replace it. So do I just measure it and find another one on ebay that is rated for 18v?

Hello. Please write to me what the nominal of the resistor you installed on the cooling fan ? Thank you in advance.

can you share internal circuit pic?

hello. what voltage is the fan?

If you give tips here, you also have some responsibility! This tip here is very primitive but it works. But only if you don't charge at full power! for this you have to attach a termo bimetal (50-60°C 122-140°F) to the heat sink. this must then bridge the resistance for full cooling performance!