View single post by Robert
 Posted: Thu Feb 15th, 2018 14:32
Robert



Joined: Sun Apr 1st, 2012
Location: South Lakeland, UK
Posts: 4066
Status: 
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Here are some photos of the cells in the EN-EL4 battery.

Firstly the original cells which I think were 1900mAh.









Followed by various views of the replacement Samsung cells, 2600mAh The foaming Gorilla Glue can be clearly seen.



The trickiest and probably most critical joints are shown here, They connect the PCB to the two positive tags at the PCB end of the batteries. The clearance on these is critical as they protrude to the maximum possible and prevent the casings from closing properly if not perfect.





















Not as neat as I would like but it's working, it has completed the re-calibration but the camera still thinks it's on life 4. o.O

The copper strips are 7 thou of an inch thick, 0.18mm, I calculated they are at least 1.2 sq. mm cross section and are greater than the new Samsung battery tags which are also 7 thou thick. I am thinking the copper should also be lower resistance than nickel plated steel.

I have epoxied the casing back together so in the morning it will probably be as good as it gets.

Not sure if I feel like doing a second one, I will see how this one fares first.



____________________
Robert.