Batteries are a big part of our lives. If SHTF batteries will be ok for a while but once they started to run out these little power houses of energy could be the down fall. Batteries are actually confusing little things, so many different sizes and types. I found a great article that explains the different types of batteries and goes over each one and tells you about charging them too.
I am lucky, I actually have a solar power battery charger which is relatively inexpensive. You can even make your own battery charger for around 5 bucks (search on my website for this project). Read the full article below and get great knowledge on this little very important commodity of prepping.