What rechargeable batteries to buy for Coolpix L830 (Nikon)?

I have just got this camera Coolpix L830 (Nikon) and at the moment I am using the batteries that come with it (LR6/L40 (AA-size) alkaline batteries (x4).
On the manual it says to get 'Four EN-MH2 rechargeable Ni-MH (nickel metal hydride) batteries'.
Now, I'm not good with batteries, haha, so I need someone's help to find these batteries. And if possible to send me a link of where I could purchase these batteries and the charger, for a reasonable price of course.
Thanks in advance!
(Picture attached)

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