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I managed to switch the batteries for the Speedlink TWINDOCK (EAN: 4027301752182). Thought I might put up how I managed it right here, in case it helps somebody.

I used a hairdryer to warmth up the glue on the sticker that covers the battery pack. Getting the battery cells out was a little bit of a problem. The method that labored was levering them from the facet with the dock charging contacts – inserting a flat-head screwdriver from the half closest to the contacts (the center of the pack). The battery cells are a bizarre measurement (4/5AA I believe). The contacts on the one facet (close to the QR code) are bonded to the battery cells however they broke free with a little bit of encouragement.

I simply used some rechargeable (NiMH) AAA’s because the alternative battery cells. Take note of the polarity. I labored it out by referencing the markings on the within of the controller. Only a be aware concerning the contacts on the QR code facet, it is only a strip of metallic; not related to something however the constructive terminal on the one battery cell and the destructive terminal on the opposite battery cell.

The ultimate contact was to make use of a glue gun to maintain the cells in place. Guarantee that the battery pack works earlier than you safe them. I made the error of not testing that and needed to clear out the glue I had laid.

High left – the pack with the brand new AAA battery cells. High proper – a inventory commonplace pack. Backside – The sticker that was eliminated off the modified pack.

A more in-depth take a look at the modified pack. Polarity begins with the destructive terminal on the underside proper by way of to the left facet and ends with the constructive terminal on the highest proper.

AAA battery cell compared to the unique 4/5AA battery cell.

Hope this helps somebody.