I'm on my second 9v battery the original battery that came with it went dead a few years ago. I think it's funny that Dave constantly makes fun of the Cen-Tech in that video, yet he can't find any actual faults with it, and it's as accurate as his expensive equipment. I've had my Cen-Tech multimeter for about 12 years, and I've measured mains voltage with it plenty of times: They are also very accurate: So maybe it's your Fluke that's off.
![cen-tech 7 function digital multimeter 90899 cen-tech 7 function digital multimeter 90899](https://www.hfqpdb.com/coupons/thumbs/tn_11_FREE_7_FUNCTION_DIGITAL_MULTIMETER_1532646792.7234.png)
In any case, it is interesting to see how a few more cents can be shaved off every spin of a design. The older model shows LE830B with maybe a February 2012 datecode.
![cen-tech 7 function digital multimeter 90899 cen-tech 7 function digital multimeter 90899](https://i.ebayimg.com/images/g/F8gAAOSw3fFeTbsm/s-l640.jpg)
Interesting to see the newer model does not have part designators on the silk screen and it mentions DT833 with a March 2012 datecode. The most striking differences are the soldered fuse and the absence of a trimmer on the newer model. Picture 6 shows the diferences on the grip of the back cover. Pictures 3 (front fascia comparison), 4 and 5 (rotary dial detail of the newer and older models respectively) show the front fascia does not change much but scratches can be seen everywhere on the newer model. The two first pictures show how the packages changed, and in the back one can see the datecode between the two (45th and 1st weeks of 2014). In all pictures the newer model is on the left the older on the right.
Cen tech 7 function digital multimeter 90899 free#
I just got another free DT830 DMM from Harbor Freight and compared to one that I had got before with another purchase, and to my dismay the quality eroded even more.