4 Bank On-Board Marine Battery Charger for 12V and 36V lithium batteries on boats

ABYSS 4 Bank On-Board Marine Battery Charger for 12V and 36V lithium and lead acid batteries

4 Bank On-Board Marine Battery Charger powering multiple 12V and 36V marine batteries efficiently

4 Bank On-Board Marine Battery Charger for 12V/36V lithium and lead acid batteries

4 Bank on-board marine battery charger for 12V and 36V lithium and lead acid batteries

4 Bank On-Board Marine Battery Charger for 12V and 36V lithium batteries

Multi-Bank

ABYSS® 4 BANK 12V/36V ON-BOARD MARINE BATTERY CHARGER

$799.99

4 Banks
3 x 12V + 1 x 36V
10A per Bank
Multi-Chemistry

SKU: AB-CRG-12V/36V-4B

Three 12V banks plus one 36V LiFePO₄ bank
Dedicated 10A charging per bank
Selectable battery types on all 12V banks
IP67-rated marine construction

In stock, ready to ship

Ships in 70 hours

2-Year Free Replacement Warranty
Free Shipping
Designed in Florida

Add Accessories

Specifications

Electrical14 specs

Charger type
Multi-Bank On-Board AC Marine Charger

Power source
AC shore power

Input voltage
120 VAC nominal (105–125 VAC), single phase; not compatible with 230 V / 50 Hz supplies

Input voltage range
105–125 VAC (shuts down below 105 VAC and restarts automatically)

Input frequency
60 Hz

Nominal battery voltage
12 V / 36 V

Charge (output) voltage
12 V LiFePO₄ / AGM: 14.4–14.7 V · 12 V wet: 14.1–14.4 V · 36 V LiFePO₄: 43.3–44.2 V

Charge current
10 A per bank, all banks simultaneously

Rated output power
883 W (4 banks × 10 A)

Number of banks
4

Output configuration
3 × 12 V / 10 A (selectable LiFePO₄ / AGM / wet) + 1 × 36 V / 10 A (LiFePO₄)

Battery chemistry
12 V banks: LiFePO₄, AGM or wet lead-acid (selectable); 36 V bank: LiFePO₄

Charge profile
Automatic multi-stage CC/CV with full-charge shutdown and periodic top-up; no trickle on LiFePO₄

Termination current
0.8 A ± 0.3 A (12 V / 24 V banks); 1.0 A ± 0.3 A (36 V bank)
Mechanical & Connections9 specs

Dimensions (L × W × H)
16.6 × 9.6 × 3.8 in (423 × 245 × 99 mm)

Weight
24 lb (10.9 kg)

Housing
Extruded aluminum heat-sink base, epoxy-filled electronics

Cooling
Extruded-aluminum heat-sink base with sealed, waterproof fan

Mounting
Ø 6.5 mm mounting holes; M6 / ¼ in fasteners (not supplied)

AC connection
Attached 3-conductor cord with NEMA 5-15P grounded plug

DC connection
6 ft (183 cm) DC lead set per bank with inline fuse on the red lead

Status indicator
Per-bank LED panel — power, battery type and charging status; MODE button on each selectable bank (hold 3–5 s for lithium wake-up)

What's in the box
Charger with attached AC cord and DC lead sets, installation & operation manual (fasteners not supplied)
Environmental, Protection & Warranty8 specs

Ingress protection
IP67 (epoxy-filled)

Operating temperature
14 to 104 °F (−10 to 40 °C)

Relative humidity
5–95%

Protections
Short-circuit; Reverse polarity; No-load (no output without a battery); Over-charge (auto shutdown); Over-temperature (current derating at 176 °F / 80 °C)

Ignition protected
Yes

Certifications
ABYC-compliant design; certified ignition protected

Compatible batteries
Three 12 V batteries (ABYSS 12V lithium, AGM or wet) plus one ABYSS 36V lithium trolling motor battery (60Ah / 75Ah / 105Ah)

Warranty
2-year free replacement, then 35% off a replacement through year 5 (manufacturing defects)

Download Full Spec Sheet

Built-In Safeguards
Voltage and temperature protection help safeguard your battery during charging.
Smart AC Charging
Controlled charging gets your batteries ready for the next trip.
10A for Every Bank
Charge multiple batteries from one onboard unit with dedicated 10A banks.
Flexible 12V Charging
Supports LiFePO₄, AGM, and lead-acid charging for your 12V batteries.

Built-In Safeguards

Voltage and temperature protection help safeguard your battery during charging.
Smart AC Charging

Controlled charging gets your batteries ready for the next trip.
10A for Every Bank

Charge multiple batteries from one onboard unit with dedicated 10A banks.
Flexible 12V Charging

Supports LiFePO₄, AGM, and lead-acid charging for your 12V batteries.