[Robert Nixdorf] frequently needs to use this high-end audio recorder, but it sucks dry a set of eight AA batteries in just ... He bought a Quick Charge power bank and then hacked a Digispark ...

Here, you can grab a quality charger ... of rechargeable AA batteries by Powerowl. They’re high-capacity batteries and can be recharged over 1,200. They can also keep 70% power after three ...