[ausev] discrete battery charging

[tomsmail at wtez.net]

Hi, 
I was wondering if anyone has built or thought of displacing the cost of a large high voltage pack charger with multiple smaller 12V battery chargers that could run in parallel on a series connected pack, each with microprocessor controlled independent three stage charge regime (either IUU, IUI).  On the surface it seems doable: A 30 A vector charger can be had for less than 80 bucks.  12 of those would be $960 - far less than a Manzanita, and with implicit charge equalization. 
What am I missing?
Regards,
Tom