Dexcom G5 Transmitter covers for 390/389 batteries

myminifactory

New Design From Scratch Creates Thinner and Stronger Latch.0.4 mm and 0.8 mm versions are available for the battery tab push extrusions which are high. A new form has been added to make a silicon seal that's 1.5 mm and 2 mm thick, going between cover and batteries/transmitter. You may need to print a new cover every time you replace it because the latch might break if you try to remove the cover. However, inserting a flat 2mm screwdriver between the cover latch and the transmitter and slowly turning it to lift the latch doesn't damage the latch. I've tested this about 100 times without any damage. The STL for LR44/SR44 has been removed because I don't recommend using them; only use 389/390 batteries. You need to grind the top of the transmitter and make it 6.50 mm high, if possible making it flat. This will ensure that you won't break the top battery tabs. I've put together a few pictures to show the replacement and grinding process. I recommend using Energizer Silver 1.55V 0%Hg 390/389 MD batteries which are holding over 10 months with a battery status in xDrip+ 315 (new was 319). They will last over 12 months, maybe even 18. Apply user silicon around the edges before closing it and let it dry for 24h. Print with supports as shown in pictures for correct orientation. It's best to use PETG which is flexible; PLA will also work.