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I think all DVMs have built in voltage reference. Multitesters are limited usually by the number of digits of their LCD. There are plenty of cheap DVMs with 10,000 counts which can measure 41.xxV within +/-0.01V.

The Tongsheng 'Turbo' version is well priced to sell against the BBS01 And BBS02. I really can't see where the DM01 would sell into.

we keep batteries for the Santana. Rack batteries can also be easily replaced with a different model as the controller is connected to the battery with just red and black wires via 4mm bullet crimps.

the problem with the toseven project is they fixed the apparent hardware weaknesses of the TSDZ2 but they apparently don't have the ressources to create better code. If and when the seed money dries up, what would happen to the half finished project? Also, they neglect the fact that the road...

I liked the comment from Jaykob (#128): I don't think that the Toseven engineer went to Tongsheng because he couldn't/wasn't allowed to fix the weaknesses there, only to screw it up on his own baby ;-) o_O

single speed is not good. Low gear ratio is also not good. If you have to have a lightweight folding bike, take a look at the Woosh Rambletta. It fits you budget, has 8-speed and good gear ratio to let you pedal comfortably at 15mph. You also have the battery option of 36V 10AH or 36V12AH for...

I think it's better to wait until general availability. You know what you are getting with TSDZ02 and Bafang BBSes. There is no special innovation to justify early adoption of the DM01 and DM02.

that's a bit of oversimplification. The inhabitable zone is quite difficult to find out there. We can look at billions of start systems but found only about 5,000 exoplanets so far. The effort is now on finding planets with moons.

the torque on your DWG22C gives about 60NM max, the DWG2X 45NM but because the tyres on your Twenty is smaller ISO451 compared to 26" tyres ISO559 , so it can climb with about 90% ability. The main thing is the new kit is very efficient at 15mph and lighter.15mph on 28-451 tyres = 277RPM...

Your initial plan is very doable, the only downside is the weight. The DWG2X is optimised for 36V and an alternative solution.

Minivelo? This bike is converted with a DWG2XNC + 8-speed cassette, 10AH or 15AH 36V bag battery. Optional bottom bracket torque sensor. From middle of October. DWG2X: 135mm dropout, 45NM motor, 320RPM max. 36V 15A, 3.6kgs Shengyi DGWX2C/DGWX2S Heavy Duty Electric Bike Rear Hub Motor For City...

the DWG22C I sell runs already on 48V.

There isn't much you can change, so I would just continue with plan A.

BTW, to upload firmware you will need: 1) a USB dongle. Mine has STM32 chip in it. 2) a 4-pin programming connector on the controller. 3) the program to write the JYT file. It's not all straightforward if you are not OEM.

Jytjd.com I did put a link on post #15

Very nicely done

quote: The safety valve is standard for every 18650 battery and is the most important explosion protection barrier. When the internal pressure of the battery is too high, the top safety valve will open the exhaust decompression to avoid the explosion.

email info@aikema.com.cn Here is the info on the TSDZ2B Turbo and a bit on their thru axle hub motor and hub with internal TS.

Chinese factories build stuff for the whole world, from Apple iPhones to earbuds that you find in Poundland shops, so if you lump them together, then the quality is bound to be variable. The fault is in the consumers' quest for the cheapest kits and when they go t*ts up, blame the Chinese and...

it does not matter where the goods are kept, as long as the price advertised include the correct taxes. All the major platforms ebay, amazon, aliexpress, alibaba etc comply and mostly enforce payment of taxes. The gripe I have is with only a few companies such as PSWPower that blatantly claim...