B&M USB-WERK

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digga
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Joined: 3 Feb 2013, 1:15am

B&M USB-WERK

Postby digga » 29 Jul 2013, 1:08pm

Anyone have one?

I've just bought one and it's not working like I thought it would. Cache battery doesn't seem to hold a charge and sometimes when I ride well above 20km/h my iphone 4 shows charging but the % battery left falls.

On the other hand, I can ride with a mapping app (View Ranger) on and tracking and it charges 1% every 6 mins or so.

Any other experiences?

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shane
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Joined: 15 Apr 2009, 3:13am
Location: On my bike
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Re: B&M USB-WERK

Postby shane » 29 Jul 2013, 4:25pm

Depends what you mean by not holding its charge.

Its a tiny buffer meant to stop things like iphones whining for power at stop lights and short stops. Its not really meant to do anything more than that.

digga
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Joined: 3 Feb 2013, 1:15am

Re: B&M USB-WERK

Postby digga » 29 Jul 2013, 10:26pm

Basically the phone stops charging when the bike stops. Not sure whether or not to return it.

martin113
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Joined: 19 May 2011, 5:35pm

Re: B&M USB-WERK

Postby martin113 » 7 Aug 2013, 2:05pm

Where have you got with this one Digga? Did you return it or get it working?

rollinbone
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Joined: 11 Jun 2009, 11:18am

Re: B&M USB-WERK

Postby rollinbone » 9 Aug 2013, 9:19am

The eWerk cache battery?!
I wasted money on one of those in 2010, but didn't use it because of the weight thing mainly
batt_side_1.jpg
the horror

I did dig it out of the cupboard recently and found it no longer worked at all!
Starbikes, who I bought it from, were helpful in that they asked me to return it for assessment.~
However thought the £5+ post to germany was like throwing good money after bad, so I just binned the thing.

The eWerk itself is excellent though- its like the battery is made by a different company-even the 'case' it comes with didn't fit right

martin113
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Joined: 19 May 2011, 5:35pm

Re: B&M USB-WERK

Postby martin113 » 9 Aug 2013, 2:30pm

Rollinbone -- So how are you now using the E-Werk without a cache battery or what are you using for a cache battery?

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andrew_s
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Location: Gloucestershire

Re: B&M USB-WERK

Postby andrew_s » 9 Aug 2013, 10:08pm

rollinbone wrote:The eWerk cache battery?!
I wasted money on one of those in 2010, but didn't use it because of the weight thing mainly

The USB-werk is a simplified version of the e-Werk that does 5V only, but which has a small cache battery built into the main casing.
As stated, the battery is only intended to prevent loss of power at traffic lights, map reading stops etc, and doesn't hold enough to usefully charge anything after you've stopped riding. The original separate battery for the e-Werk was a fair bit bigger - the initial bumf touted the possibility of using it with an e-Werk to power a Big Bang HID light, and HID lights really don't like intermittent power.

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ConRAD
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Re: B&M USB-WERK

Postby ConRAD » 10 Aug 2013, 8:39am

rollinbone wrote:...The eWerk cache battery?!....

The eWerk cache battery (i.e. 461A) is designed to work with the "traditional" e-werk and not with USB e-werk, that's because it must be charged with 5.6V whereas USB e-werk output voltage is 5.0V only (according to USB standard).
I've been using with great satisfaction a couple of 461A cache batteries since more than two years now, permanently charged in a "rotation" fashion through dynamo+ewerk.
Image
Image

digga
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Joined: 3 Feb 2013, 1:15am

Re: B&M USB-WERK

Postby digga » 10 Aug 2013, 9:10am

martin113 wrote:Where have you got with this one Digga? Did you return it or get it working?


I got it from bike24.

When I'm moving my iphone is charging but as soon as I stop the phone stops charging. Might as well have got an e-werk. I've also noticed that even when I'm moving the iPhone shows its charging but the % goes down - that could be the iPhone 'tho.

I'm going to return it but am doing a tour in a couple of weeks so didn't trust German mail to get it to and from Australia in time.