A trailer breakaway battery box protects the power source for a breakaway system, while a complete kit adds components such as a switch, cable, charger, and battery. The CURT case is best for buyers who need a lockable enclosure; the BUNKER INDUST kit suits those seeking a testable battery system; and the side-load kits bundle key components. The three-box Relaxweex set is for buyers who need multiple enclosures.
| Product | Best For | Type |
|---|---|---|
| CURT 52022 | Lockable battery protection | Battery case |
| BUNKER INDUST Kit | Charge-status checks | Breakaway kit |
| Side Load Trailer Breakaway Kit | Bundled components and wiring | Breakaway kit |
| Relaxweex 3-Pack | Multiple replacement enclosures | Three battery cases |
| Side Load Break-Away Controller System | LED battery monitoring | Breakaway kit |
CURT 52022 Lockable Battery Case
The CURT 52022 is a battery enclosure, not a complete breakaway kit. It measures 6 by 5.5 by 3.25 inches and is designed to fit CURT trailer breakaway battery #52023. Its case helps protect the battery and charger from the elements and corrosion, while the lid accepts a padlock.
Best for: Trailer owners who already have a compatible battery and need a lockable protective case. It was selected for its clearly specified size, battery fit, and lockable lid. Limitation: The listed features do not include a battery, charger, switch, or wiring, so buyers needing a complete system should choose a kit instead.
BUNKER INDUST Breakaway Kit With Charger
This kit is intended for trailers that already have an electric brake system. It includes a 12-volt, 5-amp-hour battery, charger, and switch. If the trailer separates from the tow vehicle, the breakaway system activates the trailer brakes. A push-to-test feature uses LEDs to indicate whether the battery is fully charged, charging, or needs recharging.
Best for: Buyers who want a bundled breakaway system with a way to check battery status. It was selected for its specified battery capacity and test indicator. Limitation: It is for trailers with an existing electric brake system; confirm that the trailer’s setup is suitable before purchase.
Side Load Trailer Breakaway Kit
This package includes a 12-volt, 5-amp-hour rechargeable battery, built-in charger, side-load battery box, breakaway switch, cable, and wiring. The listed features say the charger charges the battery while connected to the tow vehicle. A push-to-test button displays battery level through LED lights, and the switch activates the trailer’s electric brakes if the trailer disconnects.
Best for: Buyers who want the battery enclosure and several breakaway components in one package. Its included wiring, cable, and switch distinguish it from a replacement case. Limitation: Check the supplied wiring and installation requirements against the trailer before choosing it; the feature list does not specify wire lengths or detailed installation instructions.
Relaxweex Three-Pack Battery Boxes
This set contains three plastic battery cases, each with external dimensions of 6 by 5.5 by 3.25 inches. The listing describes them as suitable for detachable trailer battery 52023 and says the material is waterproof and corrosion-resistant. The cases are intended for uses including trailers, RVs, and boats.
Best for: Owners who need multiple enclosures for spare batteries or more than one vehicle. It was selected for its three-box format and stated dimensions. Limitation: These are cases, not complete breakaway systems; batteries, chargers, switches, and wiring are not listed as included.
Side Load Break-Away Controller System
This breakaway system includes a built-in 12-volt, 5-amp-hour lead-acid battery. Its rugged plastic housing protects internal components from the elements, and LED indicators show whether the battery is fully charged, recharging, or needs charging. The system is designed to engage trailer brakes automatically if the trailer detaches from the towing vehicle.
Best for: Buyers who want an integrated battery system with visible charge-status indicators. It was selected for its specified battery and monitoring features. Limitation: The supplied feature information does not list every included component, such as a cable or wiring, so verify the package contents before ordering.
Buying Guide: How to Choose a Trailer Breakaway Battery Box
Do you need a case or a complete kit?
Choose a case when you already have a suitable battery and breakaway components and need an enclosure. Choose a complete kit when you need items such as a battery, switch, cable, charger, or wiring. Compare the package contents carefully: product names may say “kit,” but the included parts can differ.
What battery size and enclosure dimensions should you check?
Compare the battery’s voltage and capacity with the system requirements, then check the case’s internal fit and mounting space. The CURT and Relaxweex listings give external dimensions and identify fit with battery 52023, but external measurements alone do not establish the dimensions of every battery compartment.
Is an LED charge indicator useful?
An LED indicator or push-to-test button can show whether a battery is charged, charging, or needs recharging. This is useful for buyers who want a visible status check. A basic case may protect a battery without providing any charging or monitoring function.
What should you verify before installation?
Confirm that the trailer has an electric brake system when required, that the kit’s components match the trailer’s wiring, and that the battery enclosure can be mounted securely in the available space. Follow the product instructions and applicable requirements for the trailer.
Frequently Asked Questions
What does a trailer breakaway battery do?
It supplies power to a breakaway system designed to activate the trailer’s electric brakes if the trailer separates from the tow vehicle.
Can I use a battery box by itself as a breakaway system?
No. A box is an enclosure. A functioning system also needs compatible electrical and breakaway components, such as a battery and switch.
Does every breakaway kit include a battery charger?
No. Check the product’s listed contents. Some kits specify a built-in charger, while a battery case may not include a charger or battery.
Why choose a lockable battery case?
A lockable lid accepts a padlock, which can help secure the enclosure. The CURT 52022 lists this feature.
How often should I check the breakaway battery?
Check its condition and charge status according to the system manufacturer’s instructions. Kits with push-to-test buttons or LED indicators provide a way to view charge status.