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Dockside charger for sailboat — sizing for 2026 lithium bank

Sizing the dockside charger for lithium = 30% bank capacity (recommended), 50% max (rare). Brand choices: Victron Blue Smart, Skylla-i, MultiPlus (inverter combo). Mandatory LFP profiles (never lead-acid). Calculate 230 V harbor power, cable cross-sections, fuses. 2026 HT budget per lithium bank.