Paralleleing batteries

I need to sort out if this is a good idea

from this post
http://www.evdl.org/archive/index.html

Please consider going with one string. Paralleling causes problems all
around. Your battery life would greatly increase. At least have a
contactor bank so that you can use only one string at a time. Each
string should be charged independently and have it's own SOC meter,
too.


Here is another EVDL post about paralleling batteries
seems that discharging is okay but charging may cause problems

http://www.nabble.com/Paralleling-batteries-in-high-current-environments-td18160663ef25542.html#a18167307