In a SHTF scenario when the electrical power grid is down, you will be reliant on batteries to power your flashlights, portable radio, and other electronic devices.

Even though rechargeable battery technology has made great advances, I rely on high-power Alkaline batteries for some of my critical electronics that require consumer size AA, AAA, etc.

Updated (2016)
Lithium Batteries Best Choice For Emergency Applications

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Even the best Ni-MH (Nickel Metal Hydride) low-self-discharge (LSD) batteries will slowly lose their charge over time while sitting on the shelf. Having said that, the SANYO eneloop rechargeable battery is considered one of the best rechargeables.

Another reason that I choose to use a high quality Alkaline battery for critical preparedness electronics is their higher capacity (mAh). While the eneloop (AA) rechargeable battery has excellent capacity (1900 mAh), many AA Alkaline batteries carry a capacity of 2850 mAh with negligible drain over the same period as the rechargeable variety.

For some of my electronic devices that require consumer battery sizes, such as my pistol safes with fingerprint biometrics, dedicated emergency portable radios, some of my specific emergency flashlights, etc., I keep them filled with a powerful Alkaline battery so that I will be sure it will be ready to go…

Another battery type, the lithium battery, has nearly the same capacity as it’s equivalent Alkaline battery. For example most AA Alkaline cells offer a capacity of 2,850 mAh while the Energizer Lithium AA cells offer 3,000 mAh, basically the same. The only advantage with the lithium battery is that it will offer greater life only when you draw a lot of power as in a digital camera or flash. Otherwise you will be paying a lot more for the same thing.

Having said that, I do use rechargeable batteries for most of my day-to-day consumer battery needs in many of my devices. I like rechargeable batteries for their cost savings over time, and the ability to recharge them with alternative energy sources – which would keep much of my portable electronics operating after a grid-down situation.

For a portable solar battery charger system, combine the following products:
10 Watt Folding Solar Panel which comes with a 12 volt female cigarette lighter adapter for the ability to connect your various car charger devices.

You could also utilize this BC-2000 smart charger for AA/AAA/C/D batteries with it’s DC Car Adapter which will mate with the Solar Panel above.

The best survival battery is actually a false statement because it will depend on your use-case scenario. In some instances you will want a quality Alakaline or Lithium battery for 100% capacity, while you should also keep rechargeable batteries for their advantages such as cost savings over time and the ability to recharge them using solar power after TSHTF.

In either case, I recommend that you purchase extra batteries so that you always have what you need – when you need them.

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