When you’re upgrading a vehicle’s electrical layout, a trunk battery relocation kit helps keep a battery secure, protected, and out of the way. This guide highlights top choices that fit common Optima sizes and similar lead-acid packs. Each option is evaluated for best-for scenarios, ease of installation, and durability. Ideal buyers include weekend racers needing a compact race-ready tray, truck owners seeking a clean trunk, and DIY enthusiasts chasing a sturdy, corrosion-resistant mount.
Summary of selected products:
| Product | Key Fitment | Best For | Notes |
|---|---|---|---|
| Danti Universal Battery Tray Hold Down Trunk Battery Relocation | Optima Red/Yellow/Blue tops (34, 34R, 34/78, D34, D34/78, 34M, D34M) | Racers and DIYers needing a versatile billet tray | Includes base and top plates with multiple nuts and sleeves |
| CNRAQR Complete Aluminum Battery Box Relocation Kit | Universal fit for many car builds (13.5″W x 10″L x 10″H) | Street-to-race boxes requiring a sealed, bolt-on solution | Fully sealed, easy bolt-on design |
| Bonbo Billet Aluminum Battery Pallet Tray | Optima Blue/Red/Yellow tops supported | Solid base with retaining clips for rough driving | Embeds standard sizing and bolt patterns |
| Moker Battery Tray for Optima | Optima 34/34R/34/78, 34M, D34M variants | Universal compatibility with strong mounting | Premium billet aluminum construction |
| ProRefine Battery Tray Trunk Bracket | Fits many Optima sizes (34, 34R, 34/78, D34, D34M) | Durable, stable, easy to install | High-quality aluminum and iron |
Danti Universal Battery Tray Hold Down Trunk Kit
This billet aluminum system offers a durable base and top plate with three hold-downs and threaded sleeves. It is designed to fit Optima Red Top, Yellow Top, and Blue Top batteries across common sizes. Best for racers or DIYers who need a modular, adjustable tray that resists rust and fits several battery families. A potential limitation is that exact fitment depends on mounting space and battery dimensions in your trunk.
Who this is best for: Enthusiasts who want a flexible, corrosion-resistant mounting solution that can accommodate multiple Optima sizes.
Why chosen: It covers a broad battery range with a robust aluminum construction and includes complete mounting hardware for quick on-car installation.
Possible caution: Verify your trunk mounting space and clearance before purchase to ensure the top plate and hold-downs align with your battery’s terminals and CCA ratings.
CNRAQR Complete Aluminum Battery Box Relocation Kit
This universal billet race kit provides a fully sealed relocation solution suitable for street cars, race cars, trucks, and SUVs. It offers a bolt-on design that can be installed in the back of a vehicle where space allows. The kit emphasizes practicality, including a sealed box that can endure demanding environments. A limitation is that it does not include battery-specific wiring, so you’ll need compatible cables to complete the install.
Who this is best for: Builders seeking a true bolt-in, sealed battery box that works across multiple vehicle types.
Why chosen: The sealed design and broad compatibility make it a versatile option for custom builds and race setups.
Possible caution: If you need an all-in-one kit with cables, this option may require additional parts to complete the install.
Bonbo Billet Aluminum Battery Pallet Tray
Designed to fit Optima Blue Top 34M, D34M and Red/Yellow Tops (excluding some variants), this tray emphasizes embedded design for exact compatibility. It provides a sturdy base and retaining clips to firmly install the battery, reducing movement on rough roads. Best for drivers who want a compact, reliable tray tailored to popular Optima dimensions. A limitation is the stated fitment does not cover all Optima models, so verify your exact battery type before ordering.
Who this is best for: Those prioritizing a snug, securely anchored tray for specific Optima batteries.
Why chosen: The embedded, snug-fit design helps ensure stability under vibration and off-road use.
Possible caution: Double-check the exact Optima model and top/bottom plate alignment before purchase to avoid mismatch.
Moker Battery Tray For Optima
This universal tray covers Optima Red Top, Yellow Top, and Blue Top battery variants, with sizes up to 10.5″ L x 6.95″ W x 6.7″ H. It uses reinforced billet aluminum for durability and resistance to impact and corrosion. Best for drivers who need a broad compatibility option that still provides a robust mounting solution. A caution is that larger batteries nearing the size limit may require careful measurement before installation.
Who this is best for: Car owners seeking wide compatibility and a durable aluminum tray for multiple Optima sizes.
Why chosen: The large, forgiving dimensions help accommodate a range of battery brands beyond Optima while maintaining strength.
ProRefine Battery Tray Trunk Bracket
Focused on a wide Optima range, this tray uses a sturdy base plate and top plate with 3/8″ hardware. It aims to secure batteries against movement during rough driving, supported by anti-corrosion aluminum and iron components. Best for drivers who want a stable, heavy-duty mount with a straightforward bolt-in design. A caveat is that visual fit may vary by vehicle, so confirm clearances before installation.
Who this is best for: Those who need a heavy-duty, reliable tray with strong hardware for dynamic driving conditions.
Why chosen: It combines rugged construction with practical, clear mounting hardware that supports long-term use.
Buying Guide: Key Points To Consider
- Battery compatibility: Confirm top types (Red, Yellow, Blue) and model numbers (34, 34R, 34/78, D34, D34/78, 34M, D34M) align with your chosen tray.
- Mounting footprint: Check base dimensions and bolt patterns to ensure the kit fits your trunk space and mounting points.
- Material and finish: Billet aluminum offers corrosion resistance and strength; iron components add rigidity in some designs.
- Sealed vs. open designs: Sealed boxes protect electronics from dirt and moisture; open trays are lighter and easier to modify.
- Hardware included: Verify nuts, bolts, sleeves, and clips are included, or budget for compatible fasteners.
- Ease of installation: Bolt-on kits are simpler; some require wiring or cutting for optimal fit.
FAQ
- Which battery sizes are most commonly supported by trunk trays? Most trays support Optima Red Top, Yellow Top, and Blue Top sizes (34, 34R, 34/78, D34, D34/78, 34M, D34M).
- Do these kits require professional installation? Many are bolt-on and DIY-friendly, but some installations may benefit from a professional, especially when running new cables.
- Are sealed battery boxes necessary? Sealed boxes protect components from moisture and dust, making them preferred for trunk installations.
- Will these trays fit all vehicle trunks? Fit depends on trunk space, battery dimensions, and mounting points. Measure before purchase.
- Do these kits include all hardware needed? Most include base plates, top plates, and some hardware; verify inclusions in the product listing.
- Can I relocate a battery without affecting warranty or safety? Relocation is common, but ensure proper grounding, venting, and safety clearances to avoid issues.