Didn't hold charge long
341352
Worked for a few weeks. Barely hold charge 45 min. I basically use it as a backup in case the power cord comes loose.
2693352
Stopped holding a charge after 18 months and I don't even use my laptop much. If I were a frequent user it may not have lasted more than 6 months!
4699664
This was great until it stopped holding a charge.  I've had it less than two years and tried to contact the manufacturer by phone.  They said a technician would call me back, but they never did.
2142056
did not hold a charge for more than 2 hours... i guess that would have to do, since Nintendo discontinued the original battery pack.
622909
Bought the battery with high hopes. Thought it was a bargain compared to price of the Seido.
At time of replacement my stock battery was getting about 8hrs of use. This battery initially was getting me about 12-14 hrs of run time.  (kids, games, constant email checking etc.  Now after about 6 months of use this battery is only holding charge for about 6-8 hours and if the kids get a hold of it for games it can be drained within about 4 hours.  Have had a few situations where the charger couldn't outpace the drain, and had to turn the device off to charge up to functionality.

So time for a new battery!
2873703
Sadly the battery died far sooner than I planned. It really isn't worth following up on. I had one or two good charges and then it doesn't charge anymore.
3691765
This battery didn't last well at all.  Maybe we overcharged it, but I don't think so.  It only lasted 2 charges.
2213230
Does ok , does not hold charge for a long time. a week to 10 days
737107
It doesn't hold a charge very long. Only lasts about an hour on a full charge.
485034
Battery died and stopped charging after a couple of months. Hard to believe this highly recommended item had a disappointing charge to the battery. Now I have to keep it plugged in at all times.
311588
It worked fine for about 5 weeks, then it just stopped charging. Wouldn't turn on or light up at all. It worked okay while it lasted, battery lasting about 8 hours like they said it should, though range was a bit short, which could be expected from such a tiny unit.
125043
It did not last as long as I thought it would. My computer will not hold a charge any more.
1755623
This battery doesn't last as long as the old battery I was replacing.  I figured for the price it was worth the gamble,
but I lost in this case.
3806318
Worked great for a week or two.  Now it will not hold a charge during the day (I use my phone quite a bit, but a new battery should be able to work for 12 hours while I'm away from my charger.
2350934
didn't last . would not take a charge after just a few cycles. don't think it was really new
2837643
This works okay but the charge doesn't hold very long - we have another one that was discontinued that lasts all night when turned on. If I'm lucky, I get about an hour with full charge. Pretty disappointing.
143537
Not great. Fully charged and discharged at least 5 times. Still didn't last very long.