Scotty AI 1500W Solid State V3 12-48V CANbus Bi-directional DC-DC

Slim-case Scotty AI sized to mount directly on a Solid State battery. AI auto-tunes to your alternator; protects it with a thermal sensor.

Scotty AI is an AI-tuned bi-directional DC-DC converter. A two-minute auto-tune maps your alternator's power curve — no programming. A temperature sensor on the alternator housing lets the AI back off (Hard→Medium→Soft) before it overheats. Appears as an alternator on the Victron GUI. This slim-case version mounts on a semi-solid-state battery (battery not included).

About this product

Scotty AI SS 1500 moves 1.5 kW either way between a 12V system and a 48 V battery: it charges the high-voltage bank from your alternator, feeds the 12V side back from it when charging stops, and runs Safiery's 48V BMG.

Patented AI auto-tuning learns what your alternator can safely give in about two minutes, with no programming, and a temperature sensor on the alternator lets Scotty back off before it overheats. It works with the alternator's own regulator, including smart alternators.

Because it is bi-directional, the same unit on the same wires supplies the 12V side from the house bank, holding it at a set voltage and switching over in 25 ms. It is 94% efficient, sealed to IP66, CE and E-mark (ECE R10) certified, sits on the Victron VE.CAN bus and is set up from your phone over its own WiFi.

It learns your alternator in two minutes

Enter the alternator's rated size, press Auto Tune and leave it at idle for two minutes. Scotty's patented algorithm maps voltage, current and their rate of change to find the safest, fastest charge point for that alternator, then holds it - no programming and no guessed current limit. Soft, Medium and Hard set how hard it works.

Big charging without cooking the alternator

A temperature probe on the alternator frame lets Scotty learn how it heats against current and time. It reduces the draw as the alternator gets hot and raises it again as it cools, so a factory alternator can charge a big lithium bank without premature failure. It uses the alternator's own regulator, unmodified, and has a setting for smart alternators.

When charging stops, power flows back

The same Scotty on the same wires supplies the 12V side from the high-voltage bank, switching over in 25 ms. It holds the 12V side at a camping voltage you set (12.6V by default) and stops at a minimum high-side voltage you choose, so the house bank is never flattened. The 12V loads can run with or without a buffer battery.

On your Victron system, it is the alternator

Scotty joins the Victron VE.CAN bus at 250 kbaud with no effect on Victron control on the same bus, and the GX overview shows it - and a BMG it runs - in the Alternator tile. It reads a CAN-BMS lithium battery's charge limits directly and speaks NMEA 2000, so the charging follows what the battery asks for.

Scotty runs the 48V BMG, up to 10 kW

Scotty is what controls Safiery's 48V belt motor generator. Over a data cable it sets the BMG's torque and speed in real time, reads the battery's charge limit and temperature over CAN and winds the BMG back as the bank fills. The BMG's 48V goes straight to the battery, 7.5 kW continuous and 10 kW peak, with over 2 kW even at idle - while Scotty keeps feeding the 12V side.

Built to sit on the battery it charges

The SS 1500 is Scotty in a slim case sized to mount directly on a Safiery 48V semi-solid-state battery, so the converter, its high-side connection and the bank it charges are one compact unit. Battery not included.

Works with

  • Victron GX (Cerbo, Ekrano) — VE.CAN 250 kbaud
  • CAN-BMS lithium — Reads the charge limits over CAN
  • Lithium without a CAN BMS — Needs a stop-charge input
  • Factory and smart alternators — Uses the alternator's own regulator
  • Safiery 48V BMG — NMEA BMG data control kit
  • NMEA 2000 — NMEA-style CAN connector
  • Phone setup — Scotty's own WiFi, any phone browser

Specification

Power

Power
1.5 kW both ways (125 A at 12 V)
Low side
12V
High side
48 V
Maximum high-side current
30 A
Efficiency
94%

Charging and supply

Tuning
Patented AI auto-tune, 3 profiles (Soft / Medium / Hard)
Alternator protection
Temperature probe on the alternator + AI thermal back-off
Switching
Bi-directional load supply in 25 ms
Low-side supply
Held at a set camping voltage (12.6V default)

Installation

Low-side fuse
150 A on 50 mm² cable
High-side fuse
60 A on 16 mm² cable
Alternator size to enter
150 A if the exact rating is unknown

Integration and build

Bus
VE.CAN 250 kbaud (Victron compliant), NMEA 2000, CAN-BMS
Setup
Scotty's own WiFi from any phone; OTA updates
Protection
IP66
Operating temperature
-40 to 105 °C
Certification
CE, E-mark ECE R10

Questions

Will it damage my alternator?

That is what it is built not to do. A temperature probe on the alternator frame lets Scotty learn how the alternator heats against current and time, and it reduces the draw as it gets hot. Auto-tune also finds the highest charge point your particular alternator can hold safely.

Do I need a 12V battery on the low side?

Not necessarily. Scotty can supply the 12V loads from the high-voltage bank with or without a 12V buffer battery. If a starter battery is connected, an optional Smart Battery Protect stops it being run flat.

Does it work with a smart alternator?

Yes. During auto-tune you tell Scotty whether the alternator is smart, and it sets its trigger voltage to suit.

What fuses and cable does it need?

Fuse the low side at 150 A on 50 mm² cable and the high side at 60 A on 16 mm² cable, from the Scotty 1500 & 3000 manual. Connect the negative to chassis first and never disconnect it.

Can I run more than one?

Yes. It is rarely needed, but when it is, Scotty units share the load between them over CAN.

What do I need to run a BMG?

A Scotty AI V3 - this one - is mandatory, plus the NMEA BMG data control kit. Scotty controls the BMG's torque and speed and its charging, while the BMG's 48V goes straight to the battery.

How do I set it up?

Join Scotty's own WiFi from your phone and open 172.24.24.1 in the browser. Enter the alternator size, run the two-minute auto-tune at idle, then set your battery's charge and discharge limits.

SKU
CPC124815085-Solid-State
Category
Scotty AI DC-DC
Price
$2171.98 AUD inc. GST
Availability
In stock

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