How often you have gone on a panic mode when your Smartphones cell phones indicate a low battery warning. Imagine, suddenly your connectivity power is cut off, leaving you stranded. Rechargeable backup battery for Smartphones cell phones becomes your savior, adding those crucial hours of coverage you need.

Here are the top 3 rechargeable backup battery for Smartphones cell phones that can make a difference.

HyperJuice 2 External Battery

This rechargeable battery is a 1.5 pound external battery and can charge a MacBook and any two USB devices and that includes tablets as well. This rechargeable backup battery measures around 8 inches by 4.8 inches and has military grade lithium-ion cells that can last up to 1000 recharges. It can add up to 15 hours of battery life to a MacBook and extend iPad battery life for more than 24 hours. For charging this external battery, it would take around 4 hours.

Solio Classic2 Battery Pack with Solar Charger

Yes, to charge this battery, all you need is the sun. The 10.1 ounce solar battery has the capacity to power any USB device. To charge this battery, spread out the panels and face them toward the sun on a flat surface. Better to do this activity, outdoors. This rechargeable backup battery can fully charge an iPhone 4S in just one and half-hours. You can charge this backup battery for Smartphones cell phones for about 500 cycles in flat 6 hours, using an USB cable that is included.

Eton BoostTurbine2000

This rechargeable battery is just about the size of a Smartphone and runs with a turbine and retractable crank that one can turn to generate power. It takes approximately 3 hours to completely charge a phone but it is still a valuable resource for Smartphones cell phones rechargeable battery. You can also charge the Eton Boost Turbine2000 with an USB cable that is included. You can use it as a regular battery that can completely power almost all Smartphones in approximately two and a half hours. This rechargeable battery for Smartphones cell phones last for about 300 recharges.

Tips on Battery Chargers

We mostly think about these rechargeable backup batteries for Smartphones cell phones and battery chargers when we are outdoors. If you do not have the luxury for a wall outlet, take the help of portable battery chargers that are available. Check out some important things that you need to keep in mind while selecting a battery charger.

• You should be aware of the power input requirement of your electronics devices. Select a charger that offers the same or greater output.
• You can also add a solar charging panel to a power pack if you are planning to go on a long trip that will require multiple recharges.
• Using a standalone solar charger is also a good idea if you are getting direct sunlight.