B&M cache battery - again.

[pedaler]

I've read the previous entries on this topic and I have similar problems.

I run a Garmin GPS and when I stop, the unit closes down.  I got the cache battery to overcome this and separately, charge my 'phone.

It worked well at first, particularly the GPS but then I noticed my 'phone not charging then my GPS would attempt to shut down when static and  finally it flashed all the time when I stopped rendering it unusable, unless disconnected.

I proved the battery to be the cause.  I connected the GPS directly to the battery and it proved to be an intermittent power source, rectified when I connected the battery's USB to my PC.   It worked faultlessly.   I'm contacting my supplier - Rose bikes in Germany.

[hon_cho]

You don't mention which Garmin GPS you use.  On my Oregon 550,  there is a setting that keeps it on internal battery power if external power is lost.  Using disposable Energizer ultimate lithium AA batteries,  we get more than two long cycling days per set.  We can also use Sanyo Eneloop rechargeable batteries but I tend to change them every day with another set to prevent having them run low. 

[pedaler]

I'm using an etrex 30.  My previous one, an etrex vista hcx had the facility you mention ie to switch to battery when I stop.  Unfortunately, the 30 does not, therefore I invested in the battery and it is this that is the problem; the one I had doesn't hold it's charge and is useless.  Despite this, I returned it for a replacement.  For long trips and lighting, I prefer a dynamo. 

Watch this space. 

[pedaler]

My replacement battery was worse than the first.  Really frustrating as the principle is good and ( potentially meeting my needs.  This second one is on its way back to Germany.