Hi, my unit was used for about 2 years without problem. Today when I put in battery it did not power on. The battery stay in its compartment for about 2 mins but it turned very hot, about 40 degree Celsius and barely could touched with bare hands. I tried another new (purchased a year ago) batteries but it is the same.
Then I tried to switch from blue battery to white rechargeable battery but also the same problem.
Those blue and white batteries measured to be 3.6V and 3.3V and should be fine. Well I have tried totally 5 of them as shown in the picture.
I am aware of the rechargeable battery and charger recall that caused explosion happened in 2013 but I don't think it is related as the blue battery is not rechargeable.
Anyone seen this before and any advice?
Thanks a lot.