Have been meaning to make a video like this for ages.
Beginner-friendly and step-by-step. Let me know if you have any questions below.
Folks: Not all batteries are rated for putting 4 in series. Be sure to check how many in series your particular brand & model can support.
Thanks Boss,Beginner-friendly and step-by-step. Let me know if you have any questions below.
You can. But I've run into issues, such as current sharing and voltage sensing circuit of charger cutting off before one pack is full.One of the comments on Youtube is an important one:
As will mentioned in the video, the FETS in the battery BMS has to be rated for the full series voltage of the string of batteries.
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A question for @Will Prowse: In the video you say to charge the batteries individually before putting them in series. Do you see anything wrong with putting them all in parallel and charging them all at once?
How about using the charger built into my All-In-One unit? I plug it into 120 volts and program the charge function and charge 1 at a time.Individually charging with the same charger will ensure a perfect charge. This way beginners can never screw it up. There are so many variables to putting in parallel and wiring them up. I'd rather stick to the method that anyone can do and ensure perfect balancing every single time.
If you can charge them individually with 12V to a set absorption value, absolutely. That would work great.How about using the charger built into my All-In-One unit? I plug it into 120 volts and program the charge function and charge 1 at a time.
Thanks Will,If you can charge them individually with 12V to a set absorption value, absolutely. That would work great.
That works fine if your inverter is for 12V batteries, but it is for 48V batteries that would be a problem..... I assume it is for 48V batteries since we are talking about building a 48Volt system.How about using the charger built into my All-In-One unit? I plug it into 120 volts and program the charge function and charge 1 at a time.
Nope, mine is 24 volts but I'm thinking the same principles should apply. Correct me if I am wrong.That works fine if your inverter is for 12V batteries, but it is for 48V batteries that would be a problem..... I assume it is for 48V batteries since we are talking about building a 48Volt system.
Why is this? Doesn't the FET only see the voltage from 1 battery?One of the comments on Youtube is an important one:
As will mentioned in the video, the FETS in the battery BMS has to be rated for the full series voltage of the string of batteries.
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A question for @Will Prowse: In the video you say to charge the batteries individually before putting them in series. Do you see anything wrong with putting them all in parallel and charging them all at once?
No. When the FET turns off, the voltage of the whole string is across the FET.Doesn't the FET only see the voltage from 1 battery?