testing batteries with max b6 ?

I have a bunch of laptop batteries and measured voltage inall & marked as I found , now I am putting a charge in with all , to check capacity , about 20%+ were below 2 volts .
I've readnot trying to charge anybelow 2 volts , but when half of those are 1.97 , 1.98 , 1.99 , I thought close enough , so connected to the B6 charger and get a connection error .
I'm guessing that the charger is programed with info to not try to charge below 2 volts ?
This where I may try to do what some have tried , using charged battery , or maybe my bench supply to get them above the 2 volt mark , figure just the ones with the last 3 tenths below ?

charge the "dead" one with a somewhat charged one in parallel, set the charger to 1s, dont over do it though, it might only need 10min to get them to somewhat useable charges. it is said that these cells might have lost some cycles thanks to the undervoltage, but the ones i had, many many many... , had good capacities afterwards too - so who knows

What I was doing up to this point , is get them all up to about 4 volts [ or close 3.99 - 4.02 ] with my bench supply , then the imax B6 showed up yesterday .
So getting familiar with the new charger , I need to build a temp 6P cell holder for charging use , I did order some plastic ones and some other larger holders for mobile 12v supplies to run ham radio , my guess is to 4P and still working out the series , this is temporary for now , to get a good feel for my 1st lithium battery bank .
Then as a gather enough cells , a power wall for my RV - full-time RVer , I have around 1,300+ watts of solar panels , the last battery bank was trojan L16 x 4 & connected to give about 750 am/hr , with a Freedom Combi inverter / charger .
The last battery bank died after about 13 yrs. , now the cost has doubled what the 1st one was , so the power wall try .
Just doing one 18650 at a time on the imax to help to get an idea of capacity of each .
Just watched someone else's Tube video , and they did not seem to have an issue with under 2 volts , with the imax charger ?
Thanks of the reply , I'l give that a try .
Just had my 1st warm battery [ out of about 60 ] on the imax .

you could also think about an opus bt-c3100, 4 port charger, discharger, autoswitching and it takes cells from what i have seen 0.3V and up, you would still need something to precharge dead ones though

Before I capacity test my cells, I stick 8 of them in parallel and charge at once with 5A. This takes care of all voltage issues since it doesn't matter if they're at 1v or 4.2v. It also lessens the time they spend in the capacity testers, thus increasing testing throughput.

If you want to do them individually, you'll have to design a similar way to bump charge them to 3ish volts before putting in the imax.

when resurrecting dead cells i parallel with a full charge drill cell to shock it IF its at 0.00v

FIRST if they have any voltage at all i put them on 0.1A nm-hi mode tell it shows the voltage at 3v then switch to LI-ion

I have got about half of the 0 or under 1v batteries to come up , so far it seems random which ones come back .
This is sameas above , start with BS -bench supply [ because a beeb & warning connection issue from the iMAX ] it will get no reaction on the BS current meter - so looks like open circuit , I'm guessing after a few tries , the batteries close circuit and start totakea charge , so glad I have not just scrapped them , just try again .
The dead batteries were numbering around 20+ and now about 10 , so making progress .
Now to find a way to process larger numbers as I gather more , even 4 at time when were are talking about enough to drive a motor or build a power wall .
But no worry there , I only seem to find 1 - 4 laptop batteries at a time , could take forever to make a major battery
Thanks