Using iCharger 4010 Duo


MASSIVE restock of EV Batteries at www.batteryhookup.com 5% coupon "POWERWALLS"

Wayne's World

Member
Joined
Jan 28, 2020
Messages
86
So I finally got to use it, and its pretty awesome. First order of business - Attempting to rejuvenate, and capacity test tool batteries.

I have one with a set of dead cells that I jump started with my resistor rig, but the 4010 just doesn't like them past certain amount of random time, at any voltage. So far got them up to 2.85v and it throws a 'low voltage cell' error. I'm assuming now that the low cut off voltage is 3.0v?

I read that it can precharge low voltage cells, and it did to a point - displaying "pre_c", but errored after a while.

So, is there a function that will get the cell to where it needs to be? I saw in the settings something about low voltage setting, default being 1v IIRC, but it wasn't obvious if that was the minimum it would recognise, or the max it would charge to at low current. but as mentioned the pre_c which hovered around 50~100mA, until above around 3v, so I am a little confused in this one.

I've skimmed the manual but I'm not finding it the easiest thing to follow!
 

daromer

Moderator
Joined
Oct 8, 2016
Messages
5,662
Go above 3v
IF the icharger cant Sense it taking Charge fast enough it Will bail out. Dont remember IF it was 3.0 or not
 

Wayne's World

Member
Joined
Jan 28, 2020
Messages
86
Yep, once I got it above 3v, it charged no worries.

The next issue is the battery seems to be locked out. I wonder of this is to do with the On-Key system, or the BMS shutting off due to cell fault?

The first red LED flashes 8 times when the button is pressed. Any clue how to reset this.

Same issue on another battery with good cells.
 

gauss163

Member
Joined
Jun 28, 2020
Messages
278
Did you (pre)charge the pack directly or through the BMS? If the former then likely the BMS is still in UVP (undervoltage protection) and you need to charge through the BMS to release UVP.

Another possibility is that the BMS has disabled the pack because it detected some serious problem (though this is rare, and is more likely to be implemented in high-safety packs (e.g. laptop/medicalvs. power tools), which have multiple levels of redundant fail-safe protection - including (three terminal) chemical fuses).
 

Wayne's World

Member
Joined
Jan 28, 2020
Messages
86
The former, using the 4010. Firstly, to learn how it works. Second, to put it through its paces. Third, to attempt recovery of the dead cells. So far so good on all 3 except the dead cells self discharged slightly more than the others overnight - to be expected.

I've just started 2 CDC cycles at 1C to check capacity.

As I don't have an OEM charger, is there anything that needs to be connected to the other 3 terminals for success? I know 1 is temp. Not sure what the others are for.
 
Top