SackofFluor
1 mW
- Joined
- Jun 26, 2021
- Messages
- 10
Hey Guys,
I have a question (again).
I am relatively new to the whole "build your own battery" thing and so far I enjoy it, some sparks, no burns, no fires so far....
I build a 7s21p Batterypack from used 18650cells.
I got my BMS to work and with a small 500W inverter I drew 100Watts for hours on end.
Now, I still have another 7s21p Batterypack in the same layout and I was wondering whether I can just just "extend" the existing Batterypack with the new one, since all the strands that combine the cells in parallel should technically just be "extended" , right?
I thought about charging both packs to the same voltage to minimize differences between the cells.
So...
What do you guys think? Possible? Or just a very expensive way to start a chemical fire?
Also, can I attach an active balancing board on the same battery pack that already has the BMS? I have the feeling that the DALY BMS has minuscule balancing currents.
Thanks in advance for whatever might come!
EDIT:
Best,
Max
I have a question (again).
I am relatively new to the whole "build your own battery" thing and so far I enjoy it, some sparks, no burns, no fires so far....
I build a 7s21p Batterypack from used 18650cells.
I got my BMS to work and with a small 500W inverter I drew 100Watts for hours on end.
Now, I still have another 7s21p Batterypack in the same layout and I was wondering whether I can just just "extend" the existing Batterypack with the new one, since all the strands that combine the cells in parallel should technically just be "extended" , right?
I thought about charging both packs to the same voltage to minimize differences between the cells.
So...
What do you guys think? Possible? Or just a very expensive way to start a chemical fire?
Also, can I attach an active balancing board on the same battery pack that already has the BMS? I have the feeling that the DALY BMS has minuscule balancing currents.
Thanks in advance for whatever might come!
EDIT:
Best,
Max