Update, after 8 flights I noticed major cracking in many of the vruzend caps. I got some of the first batches of their v2.1 caps and they found that this was a flaw in them, vruzend since changed the polymer mix now so they are stronger and are sending me replacements which means i’m going to rebuild my pack. This is okay because I want to make some changes.
First change - add 1a active balancer to get full capacity out of my pack.
Second - go up to 4 gauge leads instead of 8 gauge
Third - add extra bus bar on the series connections, currently I have one bus bar for all parallel connections and two for series, if I go to three on the series i’m thinking this should reduce voltage sag.
Fourth - reduce pack size
The reason I want to reduce the size of this pack is weight, it’s very heavy on the frame, the paramotor has hard time balancing when standing on uneven ground due to the weight. I am thinking of going to 13s18p sized pack, this would drop my battery weight by 8-10 lbs. I am using LGHG2 cells which are rated 20amp continuous so with 13s18p pack i’ll still have max continuous draw of 360 amps, I rarely even go to 300 amps even on take offs, usually around 280. Thoughts? @etienne