Quote:
Originally Posted by Calenorn
but I guess they haven't gotten any faster.
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Solar cells have 2 measurable things (time is not one).
Volts and Amps (E*I=P) for a given exposure to sun.
Time is a factor of Power (P) and the ability of the storage to accumulate.
Try and force that (or fail to monitor and regulate) =
FIRE.
Be wary of cheap Power banks:
1) They skimped on the charge monitor and regulate.
2) The cells inside are not balanced (have same performance grade)
3) They are excessively discharging at a rate faster than the cells expect for good life. Many batteries spec Wh over an 8Hr rate. Faster provides less Wh. (the internal batteries may be at a higher or lower voltage and the output is buck-boost regulated to 5V (or spec)
4) They just lied about overall Wh capacity