Samsung 18650 - 26d charging voltage

USSR · Jun 25, 2015

Hi i have extract few of above cells from a Dell battery they all measure 4.16 volts.

Are they 4.2 volts cells or 4.35 volts ones?

removing the plastic below is written on it at various places
DAB8

At another place below is written
17AB
6B212

USSR · Jun 26, 2015

using the method illustrated in this thread i did below tests.

1: when it was charged to 4.2 volts by a charger desinged for 4.2 volts batteries the capacity wa 1436 mAH for a used laptop cell . (charged 2300mah battery 60 from 10 to 70 %)
2: when charged to 4.3 volts its capacity was 1610 mAH. (charged 2300 mah battery from 20 -92 % )

no (in)efficiencey factore is considered in above calculated capacity ..

so it means samsung 18650-d 26sdi are 4.3 volts ones ?

USSR · Jul 4, 2015

I hope some one will have its data sheet or info about it.

My opus bt-c3100 is on the way. Will get on few weeks time

daan_deurloo · Jul 5, 2015

Please don't charge these to 4,3volts. These are 4,2volts ones. You overcharged them :sssh:

http://www.ebay.it/itm/Samsung-ICR-...00mAh-Cell-Battery-Fully-Tested-/191431691947

Data Sheet
http://www.batteryonestop.com/baotongusa/products/datasheets/li-ion/Samsung-SDI-ICR18650-26A.pdf

USSR · Aug 9, 2015

daan_deurloo said:
Please don't charge these to 4,3volts. These are 4,2volts ones. You overcharged them
http://www.ebay.it/itm/Samsung-ICR-...00mAh-Cell-Battery-Fully-Tested-/191431691947

Data Sheet
http://www.batteryonestop.com/baotongusa/products/datasheets/li-ion/Samsung-SDI-ICR18650-26A.pdf

Acknowledged.
I used a universal 18650 charger. That was showing a blinking red led when charging and would show stable green led when done.
I left few cells in it for few hours after led turned green and found them their voltage to be 4.31 volts.
And got much better capacity when charged to 4.3 .. Now I will only charge them to correct voltage using opus bt-c3100

Samsung 18650 - 26d charging voltage

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