Hmm, there are some good points in there. I would correct some statements.
1- don’t fully charge the batteries, stop the charge at 4.19 because if you are using a VESC you can overcharge them when you use the brakes
*** agreed, this really extends the battery life. I would even suggest stopping at 4.15 or 4.17V (and has nothing to do with VESC)
2- don’t discharge them below 3.7v, if you want to charge them full the heat can break them.
*** That is very conservative. You should be able to discharge your LiPos down to 3.3V. Personnaly I’ve set soft cutoff at 3.4V and hard cutoff at 3.1V.
3- don’t charge the batteries quickly after use, wait a while to cool them.
*** Yes, this is considered as best practice
4- use a lipo alarm buzzer to control the charge.
*** You probably mean DIScharge. Yes, you “something” to control discharge (Buzzer, volt meter, VESC, …)
5- don’t use batteries in series with different specs.
*** Yes, because all of the current flows through every battery. IF you do use different specs batteries in series, your amp limit should be the “weakest” battery.
6- don’t use batteries with a lot of difference charge load.
And IF you do limit amps and volts to your weakest battery.
7- charge batteries one by one.
*** Yes. Unless you know exactly what you’re doing and then still double check that everything is connected properly.
8- charge batteries in series is dangerous.
*** Yes, sort of. At least if you don’t know what you’re doing.
And if you do, make sure you have the right control mechanisms in place (e.g. monitor every cell).
9- don’t charge above 4.2V.
*** Yes, correct, very important! Never ever charge above 4.2V! Never!
10- for a longer lifespan is better to use the “balance charge” mode.
And if you’re an impatient person, use balance charge every 2nd, 3rd or 4rd charge. Or if your cells have become unbalanced.
11- use the storage mode if you are not going to use the batteries in 3 days.
*** This is very conservative.
I would say use storage mode if you are not going to use the batteries in 3 months.
12- calibrate your balance charger before charging.
13- never leave a charger unattended.
*** Yes, yes, yes
And you should also understand WHY as this could extend YOUR life or the life of your house. *)
14- if you battery has 2200mAh would be charged at no more than 2.2A, but it’s better to charge at 1.1A.
*** General rule is that max battery charge amp limit is 1C (2200mAh => 2.2A). Unless the spec of the battery is different.
*) if you overcharge Lipos or discharge them to a very low level and then draw many amps they can heat up. This heating up can result in a so-called thermal runaway where the Lipos can get very very hot. So hot that things around the Lipos can catch fire.
This does normally not happen when you’re charging your Lipos with a nice charger.
However if your charger is broken or has a malfunction or even the wrong settings it could overcharge your Lipos. No good!