Need recommendations on programmable dual or quad charger

Hi All,
Does anyone have a recommendation for a known good quality, currently available online, AC powered charger/discharger unit for conditioning traction battery modules?

In searching this and other forums I have come across several recommendations for units that are no longer available for sale or that the manufacturer has made changes to important features and software. I would like to ideally purchase a 4 channel charger capable of logging charge and discharge voltages (retaining history and/or pc downloadable) and programmable for multiple cycles. I would consider a 2 channel unit if it is the only good option out there currently.

The charger needs to be able to discharge and dissipate a "reasonable" amount of power. I am not sure what a "reasonable" load is for the conditioning cycle since there are many conflicting recommendations out there. Is there any strong consensus on this? Some chargers I have seen list discharge power ratings of 10 watts or less, others claim as much a 50 watts or more per channel. What is generally recommended?

Any suggestions or recommendations would be greatly appreciated.
Thanks,

Will

 

Phildo, thank you for the detailed information and the link to the battery module replacement thread. I ended up purchasing a quad charger locally (San Jose California) that works well but has some issues. The major issue is that it can only handle ~5 watts of discharge power per channel. This ends up taking way too long to discharge a full module and may not have the desired effect of stressing the battery.
I am thinking about ordering dual charger off of Amazon that can discharge more of a load (the EV-PEAK Duo Lipo Balance Charger). It claims to be able to can sink 20 watts per channel. It would be trading off the loss of two channels for 4 times faster discharging. Another option is manually discharging modules at ~3A down to ~6.5 volts using a headlamp and then using the charger to take them the rest of the way to ~6.3V. I still do not have a good idea of what an ideal discharge voltage is. There seems to be a number of opinions on this.