Voltage converter 20V-90V to 12V 3A (DC-DC)

A compact DC-DC step-down converter that delivers a stable 12 V / 3 A(36 W) power supply from 20-90 V DC (24/36/42/48/52/60/72/84 V systems). Suitable for lights, horn, relays, GPS, cameras, USB modules and other 12 V peripherals on e-bikes, scooters and e-motorcycles.

Key benefits

• Wide input: works with most e-mobility batteries(20-90 V DC).
• Stable 12 V output: up to 3 A – reliable power for accessories.
• Versatile applications: from LED lighting to control relays and accessories.
• Compact housing: easy installation in limited space.

Specifications

• Type: DC-DC converter(buck/step-down)
• Input voltage: 20-90 V DC (24/36/42/48/52/60/72/84 V)
• Output voltage: 12 V DC (adjustable)
• Max. Output current: 3 A (~36 W)
• Output/input: +12V/GND and +Vin/GND terminals (per batch)
• Operating environment: dry/normal operating conditions*

* For high water/dust resistance, choose an IP67 model.

Customization

• Lighting: 12 V LED lights (not exceeding 36 W).
• Electronics: GPS, cameras, recorders, low-power 12 V modules.
• Control: 12 V relays for coils, signals, switches.

Installation tips

• Place the input fuse as close as possible to the battery (e.g. 2-3 A).
• Observe polarity and use the correct cross-section of wires.
• Fix in such a way as to ensure heat dissipation.
• For sensitive devices, you can add a 12 V line fuse and filtering.

FAQ

Is it suitable for a 72 V (20s) Li-ion system?
Yes, fully charged at ~84 V – in the 20-90 V range.

Can I power a 12 V LED strip?
Yes, as long as the total power ≤ 36 W (3 A). For higher loads, choose a model with 5 A or more.

Does this inverter charge a 12 V battery?
No, it’s a stabiliser, not a charger. The battery needs a corresponding 12 V charger.

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