As I am having some problems with a batch of 4 Turnigy LiPo batteries that were all bought new (and at the same time) together, I thought I would do a resistance test on them all.

LiPo 1 has been charged 9 times from new and has a puffy heat shrink cover that is causing me some concern and it measured 2-3 2 when I tested it, and when I repeated the test shortly after it tested 2-2-2 and then 2-4-2 at a voltage of 4.13, 4.13 and 4.13 showing a well balanced battery.

LiPo 2 has been charged 5 times from new and also has a puffy heat shrink covering and the resistance test on this battery tested at 4-2-1 and then 4-2-1 and 4-2-1 at a volatge of 4.16, 4.16 and 4.16 per cell showing a well balanced battery.

LiPo 3 has only been charged once from new and does not have a puffy heat shrink covering and the resistance test on this battery tested at 3-4-3, and then 3-4-2 and 3-4-3 at a voltage of 3.98, 3.97 and 3.97 per cell showing a well balanced battery.

LiPo 4 has also only been charged once from new and does not have a puffy heat shrink covering and the resistance test on this battery tested at 3-4-2, and then 2-4-2 and 3-4-2 at a voltage of 3.97, 3.97 and 3.96 per cell showing a well balanced battery.

I am not at all sure what these readings show or prove as the two LiPo’s that have puffy heat shrink covering coverings that should be a cause for concern have resistance readings that are overall low and just as good as the two LiPos that have not been used yet?????

Bob.