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Compact aluminium step-down module, epoxy-potted, waterproof, 2.5 by 2.1 by .7 inches, 110 grams

KEHIPI

KEHIPI TBJ4812B60Z 36V/48V to 12V 5A 60W Power Adapter

SKU CH-XVPK-65WY5

Steps 36 V or 48 V input down to 12 V at 5 A with 95 % efficiency in an IP68-rated aluminium housing

  • Type36V/48V to 12V 5A
  • Dimensions2.5 in x 2.1 in x 0.7 in
  • Weight110 grams
  • Converts 36V or 48V input to stable 12V 5A output
  • Synchronous rectification reaches 95% efficiency with only 50mV ripple
  • Smart chip provides over-current, overload, short-circuit and over-heat protection
  • IP68-rated aluminium shell with epoxy potting resists water, dust and shock
  • Operates reliably from -40°C to 80°C in a compact 110g module

Voltage converter for golf-cart accessories

This step-down module converts a 36V or 48V battery bank to a stable 12V 5A output, delivering up to 60W for lights, radios or USB chargers. The IP68-rated aluminium housing is epoxy-potted for waterproof, dust-proof and shock-resistant operation from -40°C to 80°C. Synchronous rectification reaches 95% efficiency with only 50mV ripple. Intelligent protection covers over-current, overload, low-load, short-circuit and over-heat conditions.

Replaces bulky isolated transformers

The non-isolated buck topology fits in a 2.5 x 2.1 x 0.7 in footprint and weighs 110 grams, making it far smaller than traditional iron-core reducers. Upgrade when you need a compact, efficient 12V source that tolerates a 30V to 60V input swing without fan noise. The 2-second start delay prevents inrush stress on downstream devices.

Verify your 12V load and wiring

Confirm the total 12V draw stays below 5A and that the supply cables can handle the input current up to 10A. The module accepts 30V to 60V input; ensure your battery pack rests inside this window under load. Mount the potted case where airflow aids heat dissipation, and use the IP68 rating only with intact epoxy sealing.

Highlights

  • Converts 36V or 48V input to stable 12V 5A output
  • Synchronous rectification reaches 95% efficiency with only 50mV ripple
  • Smart chip provides over-current, overload, short-circuit and over-heat protection
  • IP68-rated aluminium shell with epoxy potting resists water, dust and shock
  • Operates reliably from -40°C to 80°C in a compact 110g module

Specifications

BrandHOMELYLIFE
ModelTBJ4812B60Z
Part NumberTBJ4812B60Z
Type36V/48V to 12V 5A
Dimensions2.5 in x 2.1 in x 0.7 in
Weight110 grams

Questions about this item

What mounting space does the 2.5 in x 2.1 in x .7 in aluminium shell need?

The compact case measures 2.5 by 2.1 by .7 inches and weighs 110 grams, so it fits in tight compartments on a golf cart or Club Car frame.

How do I wire the TBJ4812B60Z and which step is often missed?

Connect the input leads to a 30 to 60 volt source (36V/48V nominal) observing polarity, then attach the 12 volt output; the step most installers forget is allowing the 2 second start-up delay before loading the converter.

When should the IP68 potted module be replaced?

The epoxy-sealed unit is rated for -40 to 80 °C operation with over-heat, over-current and short-circuit protection; replace it if the housing cracks, water enters, or the 12 volt output falls outside the ±2 % tolerance.

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