-Comes with 3 AAA batteries of 600mAh.
-AA batteries are also compatible with this charger.
-compatible only NiMH Batteries.
-charges AAA batteries of 600mAh to 1000mAh.
-and AA batteries of 600mAh to 2700mAh.
-also capable of charging only 2 batteries at a time.
-I have used this batteries for my wireless keyboard and mouse and i must say they provide enough power.
-backup of 2 months in case of keyboard and 1.5 month in case of mouse.

It comes with 4 AAA batteries which after charging once I am using in my trimmer. It gave backup for 1 month of daily use. Great product to buy. Charges AA and AAA batteries.

And for flipkart, as always, great delivery within time but the packing was not good which is not expected from flipkart.

I got 4x Eveready 600mAh AAA batteries with charger from this package, Charges is able to charge both AAA(600-1000mAh) and AA(600-2100mAh) NiMH rechargeable batteries !! That's Great !!
Well, i don't understand why other buyers blaming Eveready that battery lasts only for 1 or 2 days !! ... But true fact is that, its almost 5 days since i purchased this product and using 4x batteries in my wireless headphone, and its working well !!
My daily use of headphone is approx 2-3 hour, and according ...

A pretty good charger. Comes with 4 AAA NiMH 600mAh batteries. Charges AAA batteries in 7-12 hours. Nice build quality and slots. I use the battery for wireless mouse and works well with it. As always awesome service by flipkart. A good buy. Recommended.

The Eveready battery charger is wonderful for charging all kinds of rechargeable batteries. Completely worth buying.. But flipkart delivered to me after almost 2 weeks!! which is unexpected from them..