Do 510 USB chargers take longer than the regular chargers?

[Madness008]

I have a 510 USB charger and the wall converter and its taking 3-4 hours to charge each battery. Is that normal?

 

[Liscab]

one hour takes mine, u should check for dirty in the contacts.

 

[bearscreek]

Yep. My USB takes quite a bit longer than the wall charger. It doesn't have as much juice.

 

[Liscab]

the usb usualy blinks I have never seen a solid green light.
my usb output is 2000 ma.What about yours?

 

[Madness008]

total garbage