It was almost ten years ago, but a PowerBook 1400 battery I purchased
at Fry's back in 1999 only held a charge for about 30 minutes. A
standard Apple battery I bought a few months later held a charge for
90-120 minutes.
Inexpensive batteries are usually inexpensive for a reason. There are
relatively few things that can go awry with a new-in-box Mac, but I
would not consider either Fry's or the Battery Plus a reputable source
for new Mac products such as batteries.
- R