Battery slow 2 charge, shop says discharge 4 times to resolve- nonsense?

[coloumb]

I've been sent a replacement Tablet PC for my NATPC M009S, they said they'd give me a reconditioned one of similar specs as it is so near to the end of the warranty (Android System Info app says it's NATPC x2-IPS)... the battery took a day and a half to get to 90 percent, and leaving it overnight it's at 40 percent.
They're telling me that you need to discharge the battery and recharge 4 times to resolve this and it sounds like B.S. as the warranty is about to expire, what do you think? is this just arse??

thanks v.much

 

[leeshor]

It usually does require 3-4 discharges to get up to speed but there is no way, (if you are using the correct charger and cable), that it should take that long, period....

 

[coloumb]

Thankyou for your help