I avoid the really cheap batteries you can find on lazada/shopee. Like everyone say..they leak. Mine was soft even, and my little one likes to bite on it.

Now I use

1) For most of my stuff: "Voninko" AA/AAA batteries from Mr DIY (it's white+blue in colour). Kids toys, remote, etc. It feels more premium that the super cheap ones.

2) For kids toys: Rechargable AA/AAA lipo batteries that can be charged directly using usb type c cables. Can buy from lazada/shopee. This outputs 1.5V, and works with many kids electronics such as remote control cars, etc. I don't use this when I know my kids may throw the toy into water, abuse, etc.

3) My old NiMH rechargable for some electronics. That said, I seldom use this already because many of my devices can't work with its voltage of 1.2V. I have a bunch of these and they're basically unused trash right now.