Just tested 4 new batteries. *The rated 750mAh, is a bit generous!
I have not tested the Hopper IO’s “Voltage Cut Off”, probably 3.0-3.2 volts, ALL my tests are done with a industry standard testing 2.5 voltage cutoff. So you’ll probably see about 700mAh while in good shape.
Tested on SkyRC MC3000 analyzing charger.
HOPPER IO - GHB3 (750mAh Lion $15/each)
CHARGER TESTING SETTINGS:
(Refresh C-D-C): CHG= .35A, DISC= .17A, TERM= .04A, CUT-VOLT = 2.5V, D-REDUCE= .03A
RESULTS:
#1): mAh= 734 WH= 2.8 DC IR= 55 AC IR= 24
#2): mAh= 727 WH= 2.77 DC IR= 62 AC IR= 24.5
#3): mAh= 730 WH= N/A DC IR= 70 AC IR= 25.2
#4): mAh= 726 WH= N/A DC IR= 61 AC IR= 24
Approximately how LONG does it take to charge an empty GHB3 battery using the supplied MAGNETIC USB charger cable?
I just tested my 1st one, ran it down till DEAD, approximately 3 volts.
Used a 2.1 amp iPad USB charger.
After 4 hours, the double flash LED light full charge confirmation did NOT activate.
Pulled battery, read 4 volts with meter. So it was getting a charge, and I realize this magnetic charger is going to be slow, but FOUR HOURS, and still not full to 4.2 (standard lithium cutoff voltage)
My USB inline meter showed the device taking bursts of up to 1.2 amps then dropping to almost nothing, then repeating this cycle. I switched to a 1 amp Apple iPhone charger, device was pulling 700-800 mAh’s, a slower but better rate for a 750mAh rated battery, but the on/off cycling continued.
While I can custom set my external charger settings, being able to use the magnetic cable is attractive as you aren’t constantly taking the backend on and off so often. I also bought the little charger stand from
@Delta3DStudios, and thought it would be handy just to plop the IO right in for top up charges.
So thanks in advance.... will do more tests.
Approximately how LONG does it take to charge an empty GHB3 battery using the supplied MAGNETIC USB charger cable?