Dolphin Battery Booster 12V/36V 20A

SCANDVIK Dolphin Battery Booster 12V/36V 20A

The Dolphin Battery Booster (Part #99204) is an intelligent DC-to-DC marine battery charger engineered to charge a 36V auxiliary battery bank from a 12V power system. Typical applications include bow thruster and trolling motor battery charging. By recharging during navigation, auxiliary batteries remain ready at all times — no waiting until connected to shore power is required.

The unit delivers up to 20 amps of output current at 36V nominal, accepting an input voltage range of 10V to 16V. Its advanced 4-stage IUoU charging program reduces charging time by up to 50% compared with a basic alternator, and four selectable battery chemistry profiles — Lead Acid, AGM, GEL, and Lithium LiFePO4 with BMS — ensure optimal charging for virtually any auxiliary battery type.

Comprehensive electronic protections include automatic restart on input/output under- and over-voltage, short-circuit on output, and overheating. Reverse polarity protection is provided by fuses. The unit also features built-in input and output fuses (x4 F30A input, x2 F15A output) and a thermostated variable-speed fan for thermal management.

The assembly process incorporates conformal coating of the electronic PCB board, guaranteeing extended lifecycle performance in demanding marine environments. A front tricolor LED display provides at-a-glance charging status. The compact form factor — 250 x 150 x 80 mm — is only half the size of a conventional charger of equivalent power, making installation straightforward even in tight spaces.

The Dolphin Battery Booster meets ISO13297 safety standards and carries an IP22 ingress protection rating. It is backed by a 4-year warranty.

Key Features

• DC-to-DC intelligent charger: 12V input to 36V output at 20A
• 4-stage IUoU charging program — reduces charging time by up to 50% vs. basic alternator
• Compatible battery profiles: Lead Acid, AGM, GEL, Lithium LiFePO4 with BMS
• Input voltage range: 10V to 16V; max input current: 70A
• 90% efficiency
• Automatic protection: over-current, over-voltage, short-circuit, overheating, reverse polarity
• Built-in input fuses (x4 F30A) and output fuses (x2 F15A)
• Thermostated variable-speed fan for thermal management
• Conformal-coated PCB for extended marine lifecycle
• Compact design — half the size of a conventional charger of equivalent power
• Front tricolor LED display
• ISO13297 certified, IP22 rated
• 4-year warranty
• Dimensions: 250 x 150 x 80 mm / 9-7/8" W x 6" H x 3-1/8" D; Weight: 1.8 kg / 4-1/2 lbs.