I have two battery chargers in series and in float mode and load sharing enabled on both of them. They will not share the load equally so one battery charger is in constant alarm for low current. When you have two chargers in series should only one of the chargers be in load sharing?
Off the top of my head, I'd say you can't do that. At least, maybe using two identical 12V chargers in the same mode in series to get 24V but it sounds like a bad idea. Load sharing I believe is intended for chargers in parallel, and requires an interconnect cable and support for load sharing in the design. If you have two batteries in series, you should be able to charge them independently using two possibly different models of charger, as long as the charger outputs are allowed to float and are not tied to ground.