The reason battery stay up to 70% and not charge further was due to option Desktop Mode, which wa enabled. Desktop mode helps in disabling the battery to charge up to 100% to maximize the life of the battery. I disabled it as below and it worked:
I purchased new battery for my Inspiron 14z 5423. I replaced the old battery with new and charged it to 100% first time while laptop was off. But than I used it on new battery and when the battery reached 70% so I connected the AC adapter to laptop again to charge it. Strangely when I connected the AC adapter, the battery bar directly shows 100% while Laptop is on AC power and battery actually not charging. Because when I remove the adapter, bar is still the same 70% while when again I connect AC adapter, it umps to 100% and the charging light gives one long blink and then goes off. kindly help.
New Battery for Inspiron 14z 5423 shows 100% but actually not 100% and not 
ccharing