well, i have 6x LG 18650 hG2, for wismec RX gen3,
4x LG 18650 hG2 for aegis legend, 2x samgung 25 R, will be used for asmodus colossal, 2x LG 18650 hG2 used for aegis solo, and 2x MJXO + 1 AWT and 1 anarchist 18650's, used for my mech, this last ones are the newer ones, used for it due security reasons,
the 6x 18650's for wismec are wearing super heroes wraps, the ones for aegis legend are wearing skull wraps, the ones for colossal are wearing deadpool wraps, the ones for aegis are using marvel wraps and the ones for the mech are using stock wraps, they are quite new to screw mint condition wraps, i like to keep'em separated, some of the batteries for legend mod were past mech batteries that i didnt endure that much, they charge and discharge pretty equal on this mod, tested all 4 during 2 weeks...
Battery marriage is related too much about the usage of the batteries, if they were working together mostly the same, discharge and charge under the CDR (Continuous discharge rate) and recharged with a quality charger they should perform great when working on single batt mods.
Regards,