300W DC Load: Korad KEL2010 or Tonghui TH8402A ?

[nctnico]

Hello there,

I have a Tonghui DC load 8411. When I received it the firmware was very bugged, constant power mode was not working at all. The company answered in half a day and they sent me via email a new, working, firmware.
It still has some problems like the meter showing a DC offset also if it is disconnected (could be a problem of my unit).

That is usefull information. How long do you have the 8411? And from who/where did you buy it? From Aliexpress or a seller in Europe?

@Ludee: also thanks for your input. I appreciate it a lot.

I have send Tonghui a few emails asking about European distributors but no response so far.

[trp806mo]

I uploaded the manual of the th8200 which is not the same type as what you are looking just for example.
I had those contacts in mid 2021 :
commercial thhongkong@hotmail.com (Linda Song) which warned me that the product was not EC (and so perhaps it's your issue for not having a distributor)
and a technical guy who answered to all my questions :
Clint Han
Changzhou Tonghui Electronic Co.,Ltd
No.1, Xinzhu Road, New District, ChangZhou, JiangSu, China
Tel: +86 519 85195566
Fax: +86 519 85109972
Mobile/WhatsApp: +86 18801509216
Email: dx.han@tonghui.com.cn

It's just for information as I have any clue of the "quality" of a Tonghui's Dc Load

[nctnico]

I've send a message to Batterfly (Italy) about the TH8402A because Batterfly sells a lot of other Tonghui equipment. Their price is reasonable but I got no response yet on lead time and whether I can return it if it doesn't work as advertised.

About CE: The smaller Tonghui DC loads seem to have a CE mark while the bigger ones don't.

[nctnico]

No reply from Batterfly about lead time & return policy (yet) so I decided that I'm going to order the Korad KEL2010 and see how it works. Meanwhile I have also found out that some of the Tonghui DC loads I have looked at are sold under BK Precision models BK8550 (175W) and BK8551 (300W). Unfortunately no European supplier has any stock at this moment.

[electr_peter]

I'd get a Rigol DL3031 and add banana to spade adapters to the terminals if they are that important.

The price for the DL3031 is about twice of that of the Korad / Tonghui for similar or even better specs.

Check price of DL3021 instead
FYI, Rigol DL3000 electronic load series can be modified easily (all models have same HW) dl3021-to-dl3031-conversion-discussion

For 300W, I would go with Itech/BK Precision (in my experience Itech e-loads work well). Newer units have very nice binding posts with integrated 4mm banana sockets. Something like BK8500B