I am very new to the forum so please let me know if I have posted this in the wrong section. I just had two questions relating to building and designing a battery pack:
1. is there a particular reason that packs are designed with the positive and negative leads coming from alternative sides (top and bottom) of the battery pack?
What are the downsides for building a pack with the positive and negative both coming from the top of a pack? below are examples of what I mean.
2. What would you consider is too low of a capacity when using 18650 batteries in a powerwall? Is there a general rule of thumb or is it just preference?
I have just reached enough 18650 batteries for a 7s 80p powerwall, however the capacities vary from 1400mAh - 2800mAh.
I have input the capacities into repackr to start balancing out the packs, however the deviation is approx 350 - 450 between packs. Would this be acceptable?
Apologies for all of the questions, I am still quite new to this.
1. is there a particular reason that packs are designed with the positive and negative leads coming from alternative sides (top and bottom) of the battery pack?
What are the downsides for building a pack with the positive and negative both coming from the top of a pack? below are examples of what I mean.
2. What would you consider is too low of a capacity when using 18650 batteries in a powerwall? Is there a general rule of thumb or is it just preference?
I have just reached enough 18650 batteries for a 7s 80p powerwall, however the capacities vary from 1400mAh - 2800mAh.
I have input the capacities into repackr to start balancing out the packs, however the deviation is approx 350 - 450 between packs. Would this be acceptable?
Apologies for all of the questions, I am still quite new to this.