Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: How do I insert the batteries?
Document: Although I've not had it very long, the Epare milk frother I ordered has been working wonderfully so far. I simply put in AA batteries, and made a yummy coffee drink right away. I'm happy with the purchase!
I bought this milk frother to mix my hot chocolate, and it does a great job of it. I don't end up with chocolate sludge in the bottom of my cup. It doesn't whip up the milk as well as I saw in one of the video reviews, but that might just be the batteries I used.
This product works well, uses 2 AA batteries. I like the design for ease of operation, it's easy to hold. It lies on it's side when not in use as the bottom is too round to stand it on it's end. It does a decent job of frothing, it achieves about 85% of the volume of the last one I used which is fully adequate, I think this one will outlive the other by a longshot, it seems to be built better and more durable.
Excellent frother. I'm gonna have to buy a new one because the batteries won't come out. Still happy with performance
Arrived on time. Works great, good foam, easy to clean. Had it about a month and the batteries are still working.
Now I have to through away my cappuccino maker because of this quiet little tool. It works like a charm.
Surprisingly, it is a very powerful milk frother. I am glad to have made the purchase. Price was reasonable as well.
Got it very soon after I ordered it online, now yet know how long it will last but it functions well now
great product, very easy to use and fits easily in kitchen drawer, I like that no cord is required . . .
Very happy with this product. Makes a very nice froth and rinses easily. Would recommend. I am happy with this purchase.
Answer: If you're looking at the front- (where there is a silver circle button to turn it on), turn it around, and the lower back side, where the silver bottom is higher up along the blue, there is a tiny little button, that if you push, it pops open the battery chamber. Just turn it around, and feel the silver back side, and you'll see: feel it. It's super easy once you see it. Battery directions (+, -) are written on it, and labeled on batteries as well! Let me know if you need more help!