If you are going to load test it, it's better to actually let it rest for 24 hours after charging to allow the surface charge to dissipate. Running a load on the battery for a few seconds is probably not going to give you a reliable test.
2015 Seaark 1872 MV CC Etec-90
Helix 12 CHIRP SI, HB 1199, MinnKota Riptide ST80/i-pilot Link, Bob's Hydraulic
Bitter Gun Owner