laser555
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- Oct 30, 2013
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I just purchased 2 of the NCR8650B batteries that came with a cheap chinese charger. The output of the charger is 4.2V/650mAh.
It contains one led light that is supposed to (i think) turn from Red to Green once the battery has been charged. Below are some measurements.
Battery #1
Before Charge 3.57V
After approx 2 hrs 3.83V
After Approx 4 1/2 hrs 4.08V
After 6 hrs 4.21V
Battery #2
Before Charge 3.57V
After approx 3 hrs 3.90V
After Approx 5 hrs 4.13V
After 6 hrs 4.23V
Once the batteries reached 4.2x Volts I pulled them off the charger.
The led light on the charger never turned from RED to GREEN.
After I pulled them out and re-inserted them the led light stayed GREEN.
Should the led light changed to GREEN once the V hit 4.2x VOLTS or does it keep charging to say 4.3 volts and then turn the light from RED to GREEN? Is this how other chargers work? I pulled the batteries out when they read 4.21/4.23 volts because I was afraid I would over charge them. What voltage do most charges cut off their power?
One other question about these batteries.
Why do they recommend that you do not store them fully charged?
Anyway, I have 2 batteries charged and am just waiting for my laser to arrive.
Thanks!
It contains one led light that is supposed to (i think) turn from Red to Green once the battery has been charged. Below are some measurements.
Battery #1
Before Charge 3.57V
After approx 2 hrs 3.83V
After Approx 4 1/2 hrs 4.08V
After 6 hrs 4.21V
Battery #2
Before Charge 3.57V
After approx 3 hrs 3.90V
After Approx 5 hrs 4.13V
After 6 hrs 4.23V
Once the batteries reached 4.2x Volts I pulled them off the charger.
The led light on the charger never turned from RED to GREEN.
After I pulled them out and re-inserted them the led light stayed GREEN.
Should the led light changed to GREEN once the V hit 4.2x VOLTS or does it keep charging to say 4.3 volts and then turn the light from RED to GREEN? Is this how other chargers work? I pulled the batteries out when they read 4.21/4.23 volts because I was afraid I would over charge them. What voltage do most charges cut off their power?
One other question about these batteries.
Why do they recommend that you do not store them fully charged?
Anyway, I have 2 batteries charged and am just waiting for my laser to arrive.
Thanks!
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