View single post by Robert
 Posted: Thu Oct 17th, 2019 17:25
Robert



Joined: Mon Apr 2nd, 2012
Location: South Lakeland, UK
Posts: 4066
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I have several bluetooth Apple keyboards, mice and trackpads, I can't afford to feed them on ordinary batteries, I use re-chargables.

A while back I started to buy Eneloop white AA cells and from time to time I have bought more.  On one occasion I could only get Fujitsu cells rather than the very similar Eneloop ones.

Recently I have been suffering from the peripheral devices stopping working for a few minutes at a time.  In the last few days I have two devices refuse to work at all with fully charged Eneloop cells, yet work perfectly with the Fujitsu cells.  The cell voltage is the same or near enough, freshly charged. I have tried several combinations but the Eneloops seem to be getting worse, I have thought of putting a tiny blob of solder on the pintle to make it slightly longer but I'm reluctant to apply soldering iron to a cell for fear of melting the plastic film inside.

In the Apple peripherals, mice etc, you have to insert the pintle (+ positive) end first and it sits on a soft washer which prevents a battery making contact with the terminal if inserted the wrong way round, (flat end first).  I don't have any issues with the Fujitsu batteries.

By eye the Fujitsu batteries seem to have a very slightly longer pintle to make slightly deeper contact inside the peripheral.

Other than dumping all my Eneloop cells does anyone have any suggestions or comments on how I might get over this, all these cells should have plenty of life left in them.



____________________
Robert.