fechter said:
My personal preference is to avoid anything with the word "Smart" in the name. All that bluetooth, programmable stuff is cool when it works but it also seems to be a major failure point. KISS.
Troof - I wants no more SmarT bms's. No smart chargers, no smart BMS, no smart anything. I want stupid and reliable.
lnanek said:
Given the last DALY thread, maybe you could put a query in for what MOSFETs they are using before purchasing instead of buying and replacing them? Or even spec your own for a price adjustment? I often buy batteries and get given the option of generic vs. Samsung cells, etc.. Kind of contradicts your ready, Amazon stock preferred requirement, though.
Quite valid, and how we did it in the past. I no longer have the bandwidth for this or I would. I am at the point in the Revolution where I need to be able to point at something and say
* Buy that one
* It will arrive within 1-3 days
* They have consistent quality
What is missing from DALY is a LOT code - right? If they had simply followed something like ISO 9001 and kept track of that lot of BMS I could trust them to purge those from stock.
BUT
They did not... did they? So floating around in the market are anywhere from 0pcs to 1,000,000pcs of those totally dysfunctional and hazardous BMS. The only way to make right now would be to purge every single unit that even looked like that + run a new batch and test + send replacements to everyone who ever bought one. With all the middle men involved, an impossible task. With how cheap they sell them, possibly a bankrupting task.
F'ERS burned me, we will never do business again
Happy to supply the specific Amazon seller who sold me bunk goods. They even held my order up to make a fuss about how they were not rated for wiring Series OR Parallel. The Series part is important, the Parallel part is not. If you cant run those BMS on batteries that are paralleled then there is something FAR more wrong with them
So - tells me they already had people complaining
and - they are still selling
PAUSE (I am still upset about the whole thing)
lnanek said:
Barring that, another option is to buy something that has already passed tear down in one forum or another.
Over-speccing on the maximum s count feels like it will help too. Even if you only use 16S, if it has16-20S support, and LiIon support, the components need to handle higher voltages than the cheaper 60V limit components.
You have good ideas brother. Who am I talking to?
lnanek
Thank you lnanek, you are on point with this for sure. Definitely looking for something which has been proven true... trouble is... I have to get these on the cheaper since I have to buy so many. I literally need like 30pcs. I need to standardize and never think about this again.
Back to it
-methods
