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Old 03-12-2017, 08:15 AM   #1
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Cheap Solar Storage

This might be cheaper than the car battery approach and it already has all the charging electronics built it.


Perry




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Old 03-12-2017, 08:28 AM   #2
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Divide the Wh by the Ah and you get 3.3 volts. The primary storage is a 3.3V lithium battery. It would take 4 of these to deliver the same storage as a 12V lithium pack with the same Ah rating.

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Old 03-12-2017, 09:42 PM   #3
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It's somewhat misleading that they list battery capacity at all since most of the loads are at different voltages. The more useful specification to take note of is energy, power * time, which equals 400 Wh. So if you plug in a 100 W lightbulb, you can expect this thing to last no more than 4 hours.
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Old 03-18-2017, 10:59 AM   #4
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Wow, the use of mAH to confuse people is getting annoying.

For example a 2000 mAh pack will sustain a 2000 milli amp (2 amp) draw for one hour before dropping to a voltage level that is considered discharged.

This is actually a 120 amp hour battery.
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Old 03-18-2017, 11:07 AM   #5
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Marketing hocum. Certainly a case of aiming at the uninformed. Good move by the OP to ask about it.
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Old 03-21-2017, 12:12 PM   #6
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Yeah that is misleading and the thing is big enough that it should have more capacity than that.

Perry
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