Battery sucks

With all the apps I use on it, it seems to last about a day and a half battery-wise which really isn't a big deal

Battery died completely 2 weeks after 1 year warranty

The second one lasted half the time and the battery "died" when I clasped it shut

Then an error message popped up, stating that the Band had to switch itself off because of an insufficient battery charge

When the battery finally went dead I researched how to fix it (not user replaceable) and found the battery is an inherent problem

They all suffered from a bad battery where the watch will start turning off randomly, claiming that it ran out of juice

My son's was returned approximately 2 weeks after purchase for a defective battery that would no longer hold a charge.

Then the battery died and wouldn't hold a charge for more than a couple hours

Microsoft replaced my band2 with one with a defective battery

The product is actually pretty decent but the battery seems defective.

The battery can handle a marathon fine.

After 3 months of use the battery died and Microsoft discontinued this product at the same time

Battery has died and strap eroded again !!!

First failure was battery after 6 months, second failure was failure to charge after about 4 months, Present watch will charge but dies within 1 minute

Was great while it lasted, very accurate heart rate monitor and intuitive interface but battery died in under one year of use.

sure they have better battery life, but that was never a problem for me.

What it doesn't have is a band that won't split or a battery that last much longer than the warranty.

Battery completely died after 3 months.