No matter how well designed they are, most smartphones end up dead by the end of the day – if you’re lucky, maybe a day and a half. So what can you do about it? That’s where the Eton Boost Turbine backup batteries come in. There are now three new backup batteries from the company: BT 4000, BT 4200 and BT 8400.
The BT 4000, similar to last year’s BT 2000, features a crank handle but comes with a 4000mAh lithium battery capable of juicing up your smartphone twice. The new product is better as it provides four minutes of battery life via a minute of cranking (the old one required much more cranking from a user). Clothed in aluminum and featuring USB 2 and microUSB ports, the BT 4000 is 5 inches long, 2.2 inches wide, and an inch thick, weighing in at 9 ounces. The pack has a price tag of $80.
Don’t want or need that emergency crank? The BT 4200 is a slimmer, crankless model that measures in at 5.1 x 2.5 x .4 inches. It also has a 4000mAh lithium battery, and will set you back $60.
The third model is the BT 8400 which features a beefier 8000mAh Li-ion battery, so on a single charge it can recharge an average smartphone four times. And the pack can be used to juice up two mobile devices (both of them at 5V 2.1 amps) simultaneously. The BT 8400 comes with a price tag of $100.
You will reportedly be able to fully charge the 4000 using a wall socket in 4.5 hours, the 4200 in 5 hours, and 9 hours of charging is required for the 8000.
While these devices might be a little on the pricey side, they could be perfect for folks that spend most of their day away from outlet access. What do you think, interested in picking one of these up, or not?