How to Keep Your Batteries Powered in Your Photo Shoots It’s not so long ago that I felt the typical frustrations regarding using rechargeable batteries. But now I’ve got a good strategy that is working for me like charm. And I am about to share it with you. I’m talking about using top notch batteries like eneloop cells (now featured by apple as re branded Sanyo eneloop AA’s) and external batteries (Hypermac in my case) for your laptop. And I usually need only one single battery charger on location.