Recommended Battery Size for Breakaway Brake System
Question:
We have a 10,000 lbs trailer which has a electric/hydraulic brake system. The breakaway brake supplied with the trailer is only 5 amp/hours. Is that sufficient?
asked by: John P
Expert Reply:
The battery you use for a break away system needs to be able to power the trailer brakes on full for 15 minutes. A 12 volt battery rated for 5 amp hours is normally used, unless you have 3 axles each with brakes, then you would benefit more from a 9 amp hour battery. However a battery this large would not charge up through the 12 volt circuit coming through the trailer connector.
The replacement batteries we carry, # HM20008 and # TK2023 are both rated for 5 amp hours.
You can add a charger designed for a break away battery like # 20011.
Products Referenced in This Question
Trailer Breakaway Kit Battery Charger
- Accessories and Parts
- Trailer Breakaway Kit
- Battery Charger
- Hopkins
more information >
Replacement Sealed Lead Acid Battery for Shur-Set III Breakaway Kit and Tekonsha Circuit Tester
- Accessories and Parts
- Trailer Breakaway Kit
- 12V Battery
- Tekonsha
more information >
Product Page this Question was Asked From
Breakaway Kit Replacement 12 V Battery
- Accessories and Parts
- Trailer Breakaway Kit
- 12V Battery
- Hopkins
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Hopkins Engager Push-To-Test Trailer Breakaway Kit with Built-In Battery Charger - Top Load
- Shop: Bright Way Push-to-Test Trailer Breakaway Kit with 2-Amp Charger and 10 Ah Battery - Top Load
- Shop: Brake Controller
- Shop: Trailer Wiring
- Shop: Bright Way Push-to-Test Trailer Breakaway Kit with 1-Amp Charger and 5 Ah Battery - Top Load
- Shop: Dexter Trailer Breakaway Kit with Built-In Battery Charger - Top Load
- Q&A: Amperage of Brake Magnets and Size of Wire Used To Connect 7-Way Trailer Plug To Electric Brakes
- Video: Valterra RV Hatch Doors Cam Lock Replacement Review
- Shop: Dexter DX Series Electric Over Hydraulic Brake Actuator for Disc Brakes - 1,600 psi
- Shop: Replacement Cam Lock Cylinder for RVs - Keyed Alike Option - Stainless Steel - 7/8" Long
- Shop: Valterra Replacement Cam Lock for RV Hatch Doors - Offset - 7/8" Deep
- Search Results: rv lock
- Search Results: cam lock
- Search Results: electric brake battery
- Article: Dielectric Grease Review
- Article: Testing Breakaway Systems
- Search Results: bearing buddy
- Search Results: dc~dc charger
- Q&A: 7k Slip On Disc Brake Kit that Fits Dexter Axles of
- Q&A: What is the Difference Between the 10-10 Grease Seals and the 10-36 Grease Seals
- Q&A: Gauge Wire Recommendation for Wiring Up Brake Output Circuit on Trailer
- Video: Dexter Axle Brake Actuator - Electric-Hydraulic Brake Actuator - K71-651 Review
- Video: Choosing the Right Brake Controller
- Q&A: What is the Best Grease for Trailer Bearings
- Video: Curt Push-To-Test Trailer Breakaway Kit Review
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Q&A: Can Electric Over Hydraulic Actuators Get Submerged in Water on Boat Trailer
- Q&A: Troubleshooting Dexter Electric Over Hydraulic Brake Actuator Pump that Runs But Brakes Do Not Work
- Shop: Gooseneck Hitch
- Shop: Vehicle Lights
on Accessories and Parts
