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10-Year Battery Life Coming to Bluetooth Keyboards

- By - Source : Broadcom

Broadcom has introduced a new Bluetooth reference design that allows devices to use a single pair of AA batteries for up to 10 years.

On Tuesday Broadcom introduced a new reference design and accompanying software that will enable up to ten years of battery life for keyboards and other Human Interface Devices (HIDs) based on the "classic" Bluetooth basic rate radio. That means over the course of ten years -- or the device's expected lifespan -- users won't need to replace a set of AA batteries or recharge the device itself. Ever.

"The new reference design is based on the Broadcom BCM20730 65-nm low-power HID chip and includes several innovations that also will make wireless keyboards and mice easier to use," the company said. "With integrated support for USB HID Emulation (UHE) and Broadcom's ZeroTouch configuration technology, these peripherals can be used right out of the box with no special pairing procedure, making them ideal for 'all-in-one' desktop PCs."

Broadcom said the BCM20730 Bluetooth chip is compliant with the Bluetooth 4.0 Core Specification and includes support for Unicast Connectionless Data (UCD) and Enhanced Power Control (EPC) introduced in Bluetooth Core Specification 3.0 + HS. It's also compatible with Bluetooth smart ready and other HID host devices (tablets, smartphones, consoles etc), and supports the upcoming upgraded HID Profile 1.1.

"Bluetooth continues to gain momentum as the technology of choice for wireless mice, keyboards, 3D glasses and consumer electronics remote controls with more than 4 billion standard Bluetooth chips already installed in popular electronics to which these HIDs can connect," the company said. "HIDs based on the Broadcom BCM20730 can enjoy the same battery life as those based on Bluetooth Low Energy (LE) technology, even when connected to existing devices that have shipped with older versions of Bluetooth."

The new BCM20730-based ultra low power HID reference design is available now and is also sampling out to customers. That said, the availability of products using this new chip is unknown at this point, so stay tuned.

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rozz 12/08/2011 5:21 PM
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so, most likely, the batteries would leak in the keyboard before needing replaced..

nordlead 12/08/2011 5:23 PM
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the standard AA batteries will die from age before 10 years...

nordlead 12/08/2011 5:24 PM
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just to add, this would be great for headsets, cell phones, and other devices that need to be charged much more frequently.

caedenv 12/08/2011 5:29 PM
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my last logitech keyboard lasted 8-9 years before it finally bit the dust. Anything over 5 years is a good long life for any electronic device.

News from 12/8/2022:
Broadcom goes bankrupt after a slew of product returns originally sold in 2012/2013

caedenv 12/08/2011 5:30 PM
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btw, not saying that the batteries lasted 8-9 years. The batteries lasted about 1.5 years on a pair of AA batteries. Just saying that the product will wear out before the batteries do if it is used every day.

theuniquegamer 12/08/2011 6:08 PM
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Who needs 10year battery life? May be in 10year the gadget will be changed a lot , may be we don't need the conventional battery as power source to the gadgets. A lot of change can happen in 10 years. TBH the average life of a gadget is about 5 years or so (it will be replaced very soon with newer advanced one)

digitalzom-b 12/08/2011 6:53 PM
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theuniquegamer :
Who needs 10year battery life? May be in 10year the gadget will be changed a lot , may be we don't need the conventional battery as power source to the gadgets. A lot of change can happen in 10 years. TBH the average life of a gadget is about 5 years or so (it will be replaced very soon with newer advanced one)



Would you rather they take a step back in technology and make it less efficient so you can have a 5 year battery life instead?

Anonymous 12/08/2011 7:59 PM
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"or the device's expected lifespan"

I've been using my MS Natural keyboard everyday since 1996. The E and S labels have mostly worn off, but it works as well as the day I took it out of the box.

willard 12/08/2011 9:18 PM
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nordlead :
just to add, this would be great for headsets, cell phones, and other devices that need to be charged much more frequently.


Unfortunately, headsets and cell phones have basically nothing in common with a bluetooth keyboard and this advancement is barely relevant to them at all. The bluetooth components of such devices will use less power, but the devices themselves require much, MUCH more power than a keyboard.

Basically all a keyboard has to do is send and receive data over the bluetooth radio. Your cell has to power its processor, GPU, display, cellular radios, GPS, flash memory, touch input digitizer, etc.. The bluetooth component of power usage might be 1% of overall power use in a modern phone, if that much.

Sorry to burst your bubble, but this isn't going to do anything for your cell phone or headset.

kenyee 12/08/2011 9:37 PM
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Need a followup on this when real devices ship...

rosen380 12/08/2011 9:53 PM
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or Maybe rather than two 1.5v 3000 mAH AA batteries, they can stick in a 3v coin cell that'll still last for a couple years [at ~500-1000 mAH] and also shave off a little bulk from the keyboard?

Uberragen21 12/08/2011 11:54 PM
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willard :
Unfortunately, headsets and cell phones have basically nothing in common with a bluetooth keyboard and this advancement is barely relevant to them at all. The bluetooth components of such devices will use less power, but the devices themselves require much, MUCH more power than a keyboard.Basically all a keyboard has to do is send and receive data over the bluetooth radio. Your cell has to power its processor, GPU, display, cellular radios, GPS, flash memory, touch input digitizer, etc.. The bluetooth component of power usage might be 1% of overall power use in a modern phone, if that much.Sorry to burst your bubble, but this isn't going to do anything for your cell phone or headset.


That's not entirely true, but a good theory. We all know when you keep your cell phone's bluetooth turned on, the battery drains faster regardless of whether you are actually connected to anything. This will help reduce the amount of power the bluetooth radio transmitter / receiver consumes, therefore improving cell phone / headset battery life. Determining how much is up to someone who cares.

willard 12/09/2011 12:05 PM
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Uberragen21 :
That's not entirely true, but a good theory. We all know when you keep your cell phone's bluetooth turned on, the battery drains faster regardless of whether you are actually connected to anything. This will help reduce the amount of power the bluetooth radio transmitter / receiver consumes, therefore improving cell phone / headset battery life. Determining how much is up to someone who cares.


That's why I said "barely relevant." Bluetooth doesn't use a ton of power compared to the rest of the phone, but if your phone isn't doing anything, the proportion of course goes up.

I don't know about iPhones, but on Android phones you can get a breakdown of what percentage of battery was used by which part of your phone (or app). I've never seen Bluetooth anywhere near the top of the list, or at all, really.

danwat1234 12/09/2011 12:11 PM
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HID ; High Intensity Discharge emulation? I have HIDs on my car, they work well? They aren't running off a Broadcom chip though.

Uberragen21 12/09/2011 12:16 PM
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willard :
That's why I said "barely relevant." Bluetooth doesn't use a ton of power compared to the rest of the phone, but if your phone isn't doing anything, the proportion of course goes up. I don't know about iPhones, but on Android phones you can get a breakdown of what percentage of battery was used by which part of your phone (or app). I've never seen Bluetooth anywhere near the top of the list, or at all, really.


Yup. That's correct. I don't use my bluetooth on my Samsung phone, but on my old Crapberry, when I had my bluetooth (v 1.1) on, but not in use, the battery life was noticeably lower. I'm sure the bluetooth has improved since then, but either way any improvements are a good thing.

robochump 12/09/2011 12:37 PM
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This needs to happen with mouse HID (Human Interface Device) since they are battery hogs!!!

Anonymous 12/09/2011 4:12 AM
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Most likely companies will start using smaller and smaller batteries since less power is needed and we will only end up with similar or only slightly better battery life.

Chef_Boyardee 12/09/2011 5:42 PM
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This is awesome. Now I am ready to switch. I've been using the same two mx518 mice since they became available. That's a long time. I was always reluctant to switch because of battery life.

eddieroolz 12/11/2011 11:01 AM
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I doubt this, since all my mice that supposedly feature months of battery life only lasts up to a month.