Originally posted by aldo taddia I am using DSTE battery pack for my K1 and I have not encountered any problems. I hope my luck continues.
Very bad batteries. Cheap trickster resistor to cheat the orig. Pentax charger which would otherwise not charge.
Claims 2800mA/h which is impossible for that size. The orig. D-LI90 has 1860mA/h.
A cheat
One must understand that 3-rd party chargers are quickchargers and thus can even harm the orig. Pentax D-LI109.
They have just 2 contacts, lacking the T-contact for temperature-control (and switch off if too hot)
That contact is also within the camera. But those clone-batteries lack the sensor and this trickster resistor instead.
The danger of the battery getting too hot within the K1 isn't a worry but I had several clone-batteries swelling, so I could not get them out of the battery chamber without the help of pliers. If they would explode (swelling is a serious sign of such a danger) then good night to your K1.
https://www.dfrsolutions.com/blog/why-do-lithium-ion-batteries-swell