Hello Xyster,
Let's ear in mind that this pack at least has a BMS,
and your very large S&P pack does not have cell monitoring or cell protection by cell-monitor circuit breakers. You can get by fine because there's so much capacity in your pack----what's the chance of a cell reversal in normal running? Not much.
Ten cells as ten workers;
Ten tin/silicon-sentient sentries
Watch the ten metal-salt soldiers;
for none must desert duty without detection.
The BS monitor unit is a brand new product. Look how new:
And it is a product Chinese-American BS specified and had made by people of their own language and culture, and so they have good communications, and can and do revise specifications. And that,
if you go to my thread at the BS forum, is what Powerizer/John spoke about.
Clearly, the cited PDF has not been updated--it says "2.5" or whatever,
but John says this PCM cuts out at 2.8V. I'll choose to believe his word;
it's his design after all.
BS's pages have many errors in numbers and wordings.
So do the pages I read from native English speakers.
The advantage here in dealing with BS, is that they are in touch with the factories in China. They want to sell products at competitive prices, not headaches for themselves and customers.
Nor do they sell Mystery Boxes of lipos, such as the very sweet but
whatever-is-inside it Point-One and other proprietary brands, Velectris pack pictured above included, of lipo packs vended by various folks.
Only BatterySpace and Kokam to my knowledge offer bike-specific lipo packs
and -document the cells- and in the case of BS, offer comprehensive specs on their protective mechanism.
I know relatively "all about" this BatterySpace product because that firm is relatively upfront with technical information.
Satisfaction?
The market is such that if they piss off too many people they lose more business.
This thread is public enough to cause a palpable result to their ebike lipo battery prospects if the product fails my review.
So it pays to make good on imperfect transactions.
I think they will make good; I know they want to make good.
I think it is safe and fine to run this pack in the interim period, if I run it conservatively--maybe even hard. It may not matter to the pack.
A bad cell is not contagious, per se, so long as it does not puff, or pop flames.
I think, by the symptoms gathered and by the logic presented,
that it's evident to this level thinker who has it all at hand, that:
a)
A single cell in this pack is a bad actor.
b)
BS is not a firm of mendacious rip-off artists.
c)
Chinese immigrants may not have the easy grace of perfect English or the perfect attention (who does?) in keeping all pages's numbers up to date.
Who among the native-English speakers owns a perfectly spelled and tabulated business page?
I can name a few that don't.
d)
D'oh, so no-one is perfect. I don't think BS is a combine for crooks or bilkers.
e)
Everyone deserves a second, third and fourth chance. I sense well-intending people trying to make a living in difficult business. Very difficult.
That said, I can still bail from this battery purchase if BS does not act to my own satisfaction.
That's how it works; after all, I paid by credit card.
