One of the vexing aspects of modern wearable electronics is that they are electronic. Hence, they require batteries, and batteries have finite capacities. We’ve all seen and read of the claims and counter-claims about this phone or that one’s battery life, and in many cases have found that such claims are about as accurate in the real world as a Hyundai mileage sticker in the dealer’s showroom.
Your mileage may vary indeed.
So when the Microsoft Band burst upon the scene two weeks ago the question of its battery life was of concern. Surely a device keeping track of up to 10 sensors including GPS would need a huge battery to keep it going, and where was there room in the Band’s sleek packaging?
Well it turns out that Microsoft has been very clever, packing in not one but two batteries into places you might not have expected. The wrist band contains two batteries, one on each side of the wrist, that also serve to ‘grip’ the Radius and Ulnar bones in a form-fitting cradle that keeps the Band from slipping around the arm without having to be too tight.
So, two batteries, but what about those sensors? Well Microsoft has released a bit more information about the clever power-sipping scheme they have devised to make optimal use of the Band’s sensor capabilities while maximizing its endurance. In the case of the heartbeat sensor, it is turned on and off at intervals that vary depending on the activity and setting of the Band. It is turned on a lot when you are running, less often during the day, and even less while you sleep. In each case a useful heart rate profile is captured, without wasting battery life on unnecessarily high resolution. Clever.
But hopefully, not too clever. It would be of little consolation if the resulting device was too limited by its electrical frugality to be effective for its intended use. So far, the MS Band is getting rave reviews for its functionality, so the only question would seem to be, what about those battery life claims?
Well Microsoft told us to expect 2 days worth of battery life in typical use, which included a run with GPS activated and sleep monitoring. I’ve been wearing my Band for 10 days now with a use profile very much like the one Microsoft suggested would be ‘typical’. To be frank, I actually use it at least as much as a smartwatch, receiving notifications, Texts, Alarms and Reminders all to my wrist, with the Haptic feedback on the “High” setting. Throw in occasional Cortana use as well and I’m demanding a lot from it, with Bluetooth enabled 24/7.
In my experience so far, Microsoft’s claims are quite accurate. Unlike certain car companies, Microsoft’s claims that the Band will last 2 days have been completely in line with my experience. On days where I have charged the Band fully at night, the battery holds between 60-40% at the end of the day. Running it for two days flat takes the battery down to 10%.
Ten days and one user is hardly a statistically valid sample but at least so far I’m happy to see my Band delivering on the battery life Microsoft claimed.
Well, maybe it’s better if they stick to electronics.