48V to 12V (25A) Voltage Reducer & Step Down Converter
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Epoch 48V to 12V Voltage Reducer & Step-Down Converter
Safely run 12V lights, radios, USB chargers, horns, soundbars, and accessories from your 48V lithium battery system.
Upgrading to a 48V lithium system? Don’t fry your 12V electronics. This Epoch voltage reducer is a 48V to 12V step down converter built to take high-voltage battery power and provide stable 12V accessory power for golf carts, boats, RVs, off-grid systems, and custom lithium builds.
Built for safer 48V accessory wiring
Safely Power Your 12V Accessories from a 48V Battery
A required safety component for many 48V golf cart, marine, RV, and lithium battery systems.
Standard golf cart accessories and low-voltage electronics are usually designed for 12V power. If you connect headlights, soundbars, horns, radios, USB chargers, or other 12V accessories directly to a 48V lithium battery, the overvoltage can instantly damage the equipment.
This Epoch 48V to 12V voltage reducer bridges that gap by stepping your 48V battery power down to stable 13.5V DC accessory output, making it a smart add-on for 48V lithium golf cart conversions, marine accessory wiring, RV/camper systems, and off-grid power builds.
Protect Your Lights, Radios, and USB Chargers
This DC-DC step down converter safely drops 48V power to 12V-class accessory voltage so you can power LED headlights, tail lights, turn signals, horns, stereo systems, light bars, USB chargers, and other low-voltage devices without exposing them to destructive 48V input.
Essential for Single-Block Lithium Upgrades
On old lead-acid setups, some DIYers tapped one 12V battery in a series bank. With a modern single-block 48V lithium battery, that approach is no longer available. A dedicated golf cart voltage reducer is the correct way to power 12V accessories from a 48V lithium system.
Heavy-Duty Design for Golf Carts, Marine, RV, and Off-Grid Systems
A rugged reducer for 48V lithium accessories and mobile installations.
Installation safety note
This product is a DC-DC voltage reducer, not a battery charger. Use proper fusing, correct polarity, secure mounting, protected cable routing, and a total 12V accessory load that stays within the 25A output rating. When in doubt, consult a qualified installer.
Compatible applications
Golf carts, boats, RVs, solar systems, and 48V lithium accessory circuits.
- ✓48V golf cart lithium conversions that need safe 12V accessory power.
- ✓48V lithium battery accessories, including lights, horns, radios, stereos, USB ports, and soundbars.
- ✓Golf cart voltage reducer installations for Club Car, EZGO, Yamaha, ICON, Evolution, and similar 48V platforms where wiring is compatible.
- ✓Marine step-down converter use for low-voltage accessories on compatible 48V battery systems.
- ✓RV, camper, and off-grid systems using a 48V battery bank but needing 12V accessory loads.
- ✓Solar and power-wall projects where a 48V battery bank must run 12V control circuits or auxiliary electronics.
- ✓DIY golf cart builders replacing unsafe battery taps with a dedicated DC-DC step down converter.
- ✓Electric utility carts, hunting buggies, and neighborhood carts that need stable 12V accessory power.
Converter features
Stable step-down conversion for safe 12V accessory power.
Recommended add-ons for a clean 12V accessory circuit
Build a safer, cleaner low-voltage accessory system.
Fitment and technical specifications
Input, output, wiring, and installation details.
| General | |
| Brand | Epoch Batteries |
| Product name | 48V to 12V (25A) Voltage Reducer & Step Down Converter |
| SKU | 48V-12V-voltage-reducer |
| Product type | DC-DC step down converter / voltage reducer |
| Primary use | Converts 48V-class DC battery power to 12V-class accessory power |
| Electrical specifications | |
| Input voltage | 40–90V DC, per product label |
| Output voltage | 13.5V DC, per product label |
| Rated output current | 25A |
| Estimated output power | Approx. 337.5W at 13.5V × 25A |
| Key-on trigger | KEY ON+ wire shown on product label |
| Input positive wire | Yellow, per product label |
| Input negative wire | Black, per product label |
| Output positive wire | Red, per product label |
| Output negative wire | Black, per product label |
Mechanical and connector details
|
| Compatibility | |
| Battery system | 48V-class lithium battery systems within the listed input range |
| Accessory system | 12V accessory loads within the converter’s 25A rating |
| Common applications | Golf carts, marine accessories, RV/camper accessories, solar/off-grid auxiliary loads |
| Not for | Charging a 12V battery unless Epoch explicitly approves that application |
| Installation guidance | |
| Installation guidance | Use proper input and output fusing based on system design and accessory load |
| Switching | Use the KEY ON+ wire with an appropriate key-switch circuit when possible |
| Cable routing | Protect wiring from heat, abrasion, sharp edges, and moving components |
| Verification | Confirm polarity, fuse size, and total accessory load before powering the system |
Simple wiring reference
Always verify the current label and included instructions before connecting power.
- ✓Yellow: 40–90V DC positive input.
- ✓Black: 40–90V DC negative input.
- ✓Orange: KEY ON+ switched trigger input.
- ✓Red: 13.5V DC positive output.
- ✓Black: 13.5V DC negative output.
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