Cali's Books Battery Kit for Interactive Musical Books. Battery Kit with 9 AG10-LR54 Batteries and Small Screwdriver for Sound Books

Traded “Let It Go” for “Brown Bear, Brown Bear” and now traded Brown Bear for Cali stories. Considering ear plugs :) They play on repeat for hours and the toddlers are getting back to the Aussie accents they learned from Bluey! Great book concept and their library is growing.Concerns:-Button batteries can be deadly if swallowed, but this company has clearly done their due diligence in trying to prevent toddlers from getting their fingers on these gut-destroying batteries by securing them with a special tool. However, the five-year-old can already replace them after seeing them changed once. The tool is now out of reach (and we can’t remember where we hid it yet)-Turn off the power switch and be sure the book is closed to save on replacement batteries.

The interactive book was a gift. I wanted the recipient not to worry about purchasing batteries.

I bought a book for a friend's grandson (2 years old). He absolutely loves these books. I just wish the batteries last longer or were rechargeable.

As soon as I received the batteries, I made sure to check them and they were all full charged. Great product.

So bummed. Needed new batteries for my son’s book and we got these as they are the brand of the book. I put them in a ziploc bag for safe keeping and they all exploded open. What a waste

We used these for musical books. Although some books required a bigger size.

The books do not all take the same battery. I was being proactive by purchasing these when I purchased a few books. Mine use a different battery. Check your book before purchasing replacement batteries.1 star cause they may work, but I really wouldn't know. A purchase I can't use and difference I was not made aware of prior to purchase.

This batteries are good for books as it shows on the picture.