This pack replaces the 3600mah-75c pack with a small increase in weight. In the fall of 2022 we released the hcl-hv flight series which were the first high performance lihv packs that out performed high performance 4. 20v packs by using the latest and greatest in materials. We are proud to offer the new hcl-hv2 series where we've been able to increase the c rate with a slight increase in mah per gram. Typically when you improve the c rate this comes at the expense of mah per gram which is why we are proud of what we accomplished with this new series. The result is a boost in voltage under load with a bit more mah per gram. True mah +/- 5%: 4000mah voltage: 15. 2v c rate: 90c size: 27mm x 44mm x 140mm g10 bottom & top plates. Weight: 358gr wire size: 10awg charge rate: 1c to 5c please note that a higher charge rate will put less mah into the pack and will reduce cycle life (smc-4090-4s1p)