How to change battery of philips trimmer (Qt4011) at home.

In this video I have shown how to open philips 4000 series trimmers and replace the batteries at home. It&really easy. I have replaced the original batteries with Duracell 750 mah rechargeable batteries which costs 250 rupees a pair. So you can make your trimmer working again in 250 rupees. You will also need a soldering iron for this. If you don&have it then you can take the help from an electrician shop for 10 to 20 rupees. Please don&forget to hit like button. You can ask any questions in the comments.