Nitecore charger charges Soshine 18650 LIFEPO4 to 3.44V rest

4LivesPerGallon

4LivesPerGallon

1 kW
Joined
Jul 2, 2015
Messages
305
Nitecore charger charges Soshine 18650 LIFEPO4 to 3.44V resting voltage .. doesn't seems normal .. comments?

I thought that, after a charge, the cells would drop to 3.33V or thereabouts, but it didn't.

The resting voltage was read over a week after charging; and, double-checked with an industrial multimeter.

Should I manually override this charger, and stop at 3.33V? The charge rate is 750ma. (I toggle the mode to LIFEPO4 from LI-ON which is the default setting.)


Nitecore charger:
http://www.amazon.com/Version-NITECORE-i4-Intellicharge-Charger/dp/B005UAI372


Soshine 1800mAh "3.2V protected cell":
http://www.soshine.com.cn/a31.aspx
 
That all seems normal to me. Once your cells get some use you will probably find they drop that surface charge overnight.

My Nitecore i4 only lasted a year before dying :?
 
4LivesPerGallon said:
Nitecore charger charges Soshine 18650 LIFEPO4 to 3.44V resting voltage .. doesn't seems normal .. comments?

I thought that, after a charge, the cells would drop to 3.33V or thereabouts, but it didn't.

The resting voltage was read over a week after charging; and, double-checked with an industrial multimeter.

Should I manually override this charger, and stop at 3.33V? The charge rate is 750ma. (I toggle the mode to LIFEPO4 from LI-ON which is the default setting.)


Nitecore charger:
http://www.amazon.com/Version-NITECORE-i4-Intellicharge-Charger/dp/B005UAI372


Soshine 1800mAh "3.2V protected cell":
http://www.soshine.com.cn/a31.aspx
Click to expand...



nitecore i4 DOESN"T support lifepo4 !

lifepo4 cells charge to 3.6v then settle to around 3.3v after a few hours
 
You are wanting to stop at 3.2?

I'm confused. I've always seen lifepo4 charged to at least 3.5v, which is full, for a new cell. Lifepo4 is pretty tolerant of overcharge, so typically lifepo4 is charged to 3.5 to 3.65v, then surface charge dissipates either over night, or as soon as discharge begins. Older cells might only hold 3.4v after surface charge is gone.
 
Insert the battery in, and wait until Li-on appears. Press SET button, the LIFEPO4 will appear.

Based on your comments, these Soshine batteries are not falling to the 3.33 resting voltage. Question is why. After running two for an hour with Cree headlamps, 1800 lumens, the voltages fell to 3.29V.
 
What 3.3v resting voltage? resting voltage of new lifepo4 is supposed to be 3.5v. Crappy old worn out cells might drop to 3.3v per cell, but not a good cell. Used but fairly good lifepo4 might rest at 3.4v.

Where are you getting 3.3v from? That's voltage for partly discharged. It should run an led light for hours before getting there.
 
4LivesPerGallon said:
Insert the battery in, and wait until Li-on appears. Press SET button, the LIFEPO4 will appear.

Based on your comments, these Soshine batteries are not falling to the 3.33 resting voltage. Question is why. After running two for an hour with Cree headlamps, 1800 lumens, the voltages fell to 3.29V.
Click to expand...


i4 doesn't have any buttons! you're talking about D4 :roll:

i got some soshine lifepo4 here. they measure about 3.35v resting
 
Overclocker said:
4LivesPerGallon said:
Insert the battery in, and wait until Li-on appears. Press SET button, the LIFEPO4 will appear.

Based on your comments, these Soshine batteries are not falling to the 3.33 resting voltage. Question is why. After running two for an hour with Cree headlamps, 1800 lumens, the voltages fell to 3.29V.
Click to expand...


i4 doesn't have any buttons! you're talking about D4 :roll:

i got some soshine lifepo4 here. they measure about 3.35v resting
Click to expand...



you're right .. D4
 
You must log in or register to reply here.
Back
Top