E-bike kludge opinion?

[conundrum]

Capacitor isolation... there's an idea.
I found a pile of identical toroids from one of my dead flat panel TVs as well, maybe suitable for making switching inductors.

-A

[Alex555]

I really like capacitor isolation, just make sure your turn-on times are shorter than your turn-off times, which they usually are not, and that will cause lots of shorts. I still think a relay is your best bet.

[conundrum]

Hm.
I have ordered some BMUs but the slow as molasses at Christmas post is taking its time.
Not likely to see these before 2013 now, but there is always a chance.

Has anyone else run into LiFePO4's that won't hold any current but have near their rated capacity, and is there a fix?
I am thinking it has to be internal damage to the busbars, these are the D-X blue ones.

They are dropping to nearly 1V under a moderate load :-(
thanks!

[Alex555]

It might be a charger problem, Lithium batteries almost always show a full charge under no load when dead.