As a power user I tend to dislike mommy chargers. Just do what I command and STFU. But of course I take care.
In case of need setting an over-discharged cell in parallel with a healthy one using some (thin) wires (a few touches here and there) is a solution.
Concerning the internal resistance measurements, depending on how that is implemented a too high voltage warning may also be wise. Certain chargers like the popular Lii-500 measure internal resistance by injecting a given current into the rail and substracting the no-load rail voltage to the measured rail voltage while the current is flowing, then dividing the difference by the current (dV/I). However, since rail voltage cannot go above maximum charge voltage, if a cell is close enough to maximum charge voltage the resistance measurement is invalid because rail voltage maxes out. Chargers which operate in such a way should warn whenever rail voltage reaches maximum charge voltage upon cell IR measurement.
In any case, I hope this charger implements cell voltage monitoring right at the cell terminals.
I wonder if you could add the function or feature to your proposed charger to test for AC Internal Resistance (IR, in micro Ohms) accurately (like Xtar VP4 Plus, but it only test DC IR), with the accuracy of the YR-1030 tester? I would like to get a nice charger with an accurate AC IR testing function without buying the YR-1030 tester separately.
Thank You for pulling this offer together. …I would like a charger/dis-charger functions for cell going into storage (~3.8V Li-Ion / ~3.3V LiFePO4), also let charge ‘top-off’ be user settable by 0.1V or even 0.05V increments? Count me in for 2 charger/dischargers either way.
I’m not managing the list, but what good does it do to be taken off the list? The list just provides you a place in line for if and when a project does become available; you promise nothing. Even if a project has a 1% chance of making it into production, wouldn’t you want the option to participate in a group buy if it beats those odds?
IIRC, the BLF LT1 took 3 years to go into production, but the people who got onto the list early got their lantern months before most people did.
If you honestly have no interest in purchasing the item then it is polite to remove your name from the list; otherwise, leave your name on and be surprised when the product somehow, eventually goes live .
BTW guys, sorry if I wasn’t on the forum at all for such a long time.
I just have had so many mental issues recently.
I didn’t want to tell anyone here about them. I was so stressed about it, I just couldn’t come to this community again.
Upon seeing the forum again and then PM from others saying people cared about me, I just started crying about being an ignorant, mental stricken fool who temporarily left a community which supported me and helped me out during harder times than the usual.
COVID and all that snazz doesn’t justify my poor behavior.
I will make it up to you guys. I will get this project up and running again!
