How to replace battery on Samsung NaviBot SR8750 vacuum cleaner

My brother gave me this vacuum cleaner after it cannot be charged and used anymore.
I looked up for the battery model online and got the replacement battery for about RM170 including free shipping. Original battery was 2000mAh. New battery was 3500mAh. It should have above 90+ minutes of operating hour.
This video will share how I cleaned, replaced the battery and side brushes as well as the cleaning the remote control unit due to battery corrosion.
Tools required are:
1) Philip screwdriver PH2
2) A clean cloth/kitchen towel
3) 2x new AAA batteries
4) Quick Drying Contact Cleaner (REXCO 18)
5) Degreaser (REXCO 70) or wet cloth
*Note: Always refer to manufacturer's manual before operating on the unit.
Happy experimenting.

[@josetteveltri1773]

I was having trouble with the remote not making contact with my vac. Your video helped and now it's perfect, thank you.

[@maurodellemonache6537]

Scusa una domanda la stazione di ricarica quanto esce dai puntali.. Grazie

[@uj7223]

А почему не li-ion