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Your Johnson begins charging immediately. The indicator light tells you whether you’re Green: Good to go, Yellow: Low, or Red: Almost dead.
Fits in any standard-sized water bottle holder. Easy peasy.
Yes. Each section of the AA Battery Johnson adds power. A full-sized AA Battery Johnson will give you up to 60 hours of charging time at 500 ma.
The basic Rechargeable Johnson weighs 2 pounds, and each additional section of power adds 1/2 a pound.
Well, that depends on your phone and how much you use it. Some phones suck more than others. Some people use their phone constantly. In the AA Battery Johnson, always use fresh alkaline AA batteries, don’t mix old and new batteries, keep the inside of the lid clean and tightly screwed on so the batteries make good contact, and load it to the max.
Warning: Math coming! Watts = (mAh/1000) x volts. Other chargers make a big deal about mAh, but what you really want to know is how many watts the thing puts out. Think of a garden hose–the current is the size of the hose, the voltage is the water pressure, and the watts are how many gallons it puts out. Amps are simply the capacity of the current, and voltage is the pressure. So you see, knowing just the amps doesn’t tell you much about the power. Now, a USB port is always 5 volts. The truth is that batteries aren’t 5 volts, but our Johnson amplifies the voltage so it puts out 5 volts. For example, if you have a Johnson with 26 batteries, and each battery capacity has 2500 mAh and 1.5 volts, then it is 97.5 watts. 97.5 = ((26 x 2500)/1000)) x 1.5. A typical smartphone needs 5 watts to get fully charged, and a standard computer puts out 2.5 watts. That means it takes about 2 hours to charge your smartphone. With a Johnson that puts out about 100 watts, you’ll get 20 charges, and if the batteries have some ineffeciency you’ll get closer to 15.
Set your display to time out more quickly, turn off unessential apps, turn off automatic sync, don’t wait until it’s completely dead to charge it, and power it down while charging. Some phones are available with extended batteries that last longer, too.
Not at all. You can use from 2 batteries to 39 batteries in your Johnson. The more batteries you use, the more power you get.
No, the units are not compatible. But you can use rechargeable AA batteries in your AA Battery Johnson.
The Johnson MP3 Player has a 2G internal memory card.
The player has a 3-watt omnidirectional speaker.
You can fast forward through songs, skip tracks, navigate through folders, and shuffle songs. Other MP3 players force you to play all your songs in a line. We don’t like being told what to do.
Our limited warranty covers defects in manufacturing and design. Eventually the rechargeable batteries will wear out, and the shine will come off the outside, but if you use it correctly, the guts will last for many many years. If something goes wrong in normal use and we can’t fix it, we’ll give you a new Johnson, and shipping is free. Get a hold of us: firstname.lastname@example.org. We’ll make it right, you betcha.