repair needed; battery change

[Fekijevac]

Hi all! Before I start about my problems, I would like to apologise on my bad english. So, let's start. I'm really new in Kindle modifications and all that thing. I bought really cheap Kindle 4 device. It's battery was dead. When i got it, i plug in charger cable but battery low status didn't go away. So I decided to open my kindle and put another battery into it (not battery for Kindle. It's 18650 battery, Li-ion, 3.7v). While I was opening it on the screen suddenly appeared message that my kindle needs repair. I changed battery but message won't go away. I downloaded Kubrick live cd and pass the proces but nothing changed. I need .