BTW it was not a dumb charger, it was a charger that wasn't set up by the user correctly.
So why do you take it down to 0 amps and and not like stop at 2 amps?
Because that charges the batteries completely. I was telling you, for a normal pack, if you hold at the recommended peak voltage of the battery and charge until you see no current flowing, you charge them completely. It doesn't overcharge. Overcharge is overvoltage of a single battery, which I think you'll find very difficult to monitor. Just because you're setting a little lower than that peak voltage, doesn't mean that another battery won't come up quickly.
I've seen quite a few lifepo4 batteries being charged, and in a pack, even if matched, some come up a little quicker than others. As the pack ages, this will be more and more pronounced.
So why charge to the limits of the batteries rather than stop a bit before?
Because you'd never completely charge the pack. You asked what the algorithm is. I assumed you meant what a normal algorithm is, not an algorithm for someone that wants to charge differently at a lower voltage and with a higher cutoff current. Why didn't you just say "this is what I want to do, is this ok" rather than "what is the charge algorithm for lithium". You left yourself open.
Charge to 2.0A at a lower voltage and then stop. That should be just fine, just keep an eye on voltages of the cells.
Hi-Power says 3.8 volts per cell. I want 3.6 to 3.7 volts per cell. Discharge is for the older ones 2 volts per cell so I will keep mine at 2.4 volts per cell or 2.6 volts per cell.
Not sure how you're going to monitor that while you're driving. Under accel, those batteries are going to drop their voltage, so just be careful.
I think you should just get some cell-log 8's. They're cheap, they log, they monitor and they have an output that can control a dash light for LVC and HVC.
I don't care if you balance, thats now what I'm saying, I just don't see you with your multimeter for the 8 hours it takes to charge your batteries, every night, watching the battery voltages. They can come up in a matter of minutes if you're not watching.
Maybe at least bring some "tap" wires out so you can easily check voltages and in the future, easily measure the voltages of the cells. Keep the wire length the same to ensure voltage drop along the wire is the same for each cell.
Then you can always add the cell logs. They do like 8 cells each and they're like $20 or so. That'd be what, 5 of those? So for around $100, you protect yourself. Sounds like they'd pay for themselves quite quickly and give you the ability to log data, which would tell you how well they're staying in balance.
And not sure if you plan on it or not, but parallel the 100Ah cells first, and then put them in series. You'll have a more reliable and balanced pack.