But just as with most things, not all rechargeable batteries are made the same. There are countless batteries and chargers out there, and it can be hard to know what’s good and what’s not good. There’s nothing more frustrating than buying something that’s supposed to be reusable but having to throw it away because it isn’t. Also: The best solar chargers So, when you need to stock up on batteries, we recommend getting one of our top picks. These are all top-notch rechargeable batteries, in AA and AAA flavors. We also included cheap bulk packs and a USB-charging option. This is the perfect starter kit. Not only are Panasonic’s eneloop pro batteries some of the best available, this kit comes with both AA and AAA batteries and a charger at a really good price. These batteries have a capacity of 2550mAh and are perfect for high-drain devices, they maintain 80% of their charge for a year or storage, work well in cold weather, and are good for 500 recharge cycles. These totally redefine the idea of batteries being disposable. Quality products and engineering mean that these batteries are good for 2,100 recharge cycles (so if you charged and discharged them daily, they’d easily last for six years). Also, after you’ve charged them, these batteries will hold 70% of their charge for 10 years when stored, so you always have charged batteries ready to go. These batteries are perfect for when you’re building a stockpile of rechargeable batteries on a budget. You can charge them up, stick them in the cupboard, and have batteries ready to go at a moment’s notice. They’re good quality and offer fantastic value for money. If you go through a lot of AA batteries, then this affordable pack is for you. Like the AA option above, they’re good quality and offer fantastic value for money. These are batteries with a built-in microUSB port, allowing them to be recharged from any USB port and making them super convenient. There are ideal for when powering things on your desk, such as mice and keyboards. And then there’s a case to carry the whole kit. What’s not to love?  In this listing, I’ve included a great starter pack, as well as options for those who want to buy some bulk batteries. There’s also rechargeable AA batteries that don’t need a separate charger, as well as a great charger that will handle pretty much any battery out there. While I’ve seen chargers that claim to do this, the process is both dangerous and doesn’t work.