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Steel vs aluminum battery box has a short verdict: pick steel for stated strength and mounting hardware, and pick aluminum when rust-proof lightness or a complete relocation kit matters more. We compared four listings, two per side, on what each one actually states about material, size, weight and included hardware. The split is honest: the steel boxes bring stated mounting gear and a stated warranty, while the aluminum boxes bring corrosion resistance and, in one listing, every cable for the move.
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Steel vs aluminum battery box: side by side
| Steel vs Aluminum Battery Box | Allstar ALL76100 Steel Box | Pilida Steel Battery Tray | Danti Aluminum Battery Tray | CNRAQR Aluminum Box Kit | Amazon |
|---|---|---|---|---|---|
| Side | Steel | Steel | Aluminum | Aluminum | |
| Stated weight | 5.5 pounds | 2.25 pounds | 1.38 kg | 11.08 pounds | |
| Max battery stated | Not stated | 10.63 x 7.06 x 7.5 in | 10.5 x 6.95 x 6.7 in | Not stated | |
| Water resistance stated | Not water resistant | Not stated | Not water resistant | Not stated | |
| Warranty stated | 90 days | Not stated | Not stated | Not stated | |
| Extras stated | Hold-down hardware | Adjustable bolts | 3/8-inch hardware | 5 AWG cables, breather kit |
Specifications are manufacturer rated as listed, collected 22 October 2026.
What each side is made of
The steel side is straightforward. The Allstar Performance ALL76100 is a lightweight steel battery mounting box, and the Pilida tray is carbon steel with a flame-retardant plastic spray coating the maker says fights oxidation, rust and corrosion. The aluminum side needs a closer read. The Danti tray’s title and bullets state billet aluminum alloy and iron, while its spec table’s Material field says Steel; the title and bullets outrank the table, so aluminum stands, but the mismatch is worth knowing. The CNRAQR relocation kit is listed as aluminum throughout, described in the bullets as a fully sealed box.
Size and weight
The listings state size and weight in their own units, so take each on its own terms. The Allstar box measures 11-3/4 inches wide by 7-1/4 inches deep and weighs 5.5 pounds, sold as a full-size model. The Pilida tray is the lowest stated weight here at 2.25 pounds, with adjustable bolts that fit batteries up to 10.63 by 7.06 by 7.5 inches. The Danti tray accepts batteries up to 10.5 by 6.95 by 6.7 inches at a stated 1.38 kg, and notes that batteries over 7.4 inches tall need longer 3/8-16 all-thread. The CNRAQR kit weighs 11.08 pounds; its stated dimensions of 16.4 by 11 by 4 inches are package dimensions, not the box interior, which the listing leaves unclear.
Mounting hardware and extras
This is where the listings separate most. The Allstar box includes hold-down hardware and mounting hardware. The Pilida tray uses a simple bolt-on design with adjustable bolts and needs no re-soldering, per the bullets. The Danti tray ships a base plate, a top plate, three all-thread hold-downs, three thread sleeves and six matching nuts, with heavy-duty 3/8-inch hardware. The CNRAQR kit goes furthest: battery connections, 16 feet of 5 AWG positive cable and 3 feet of 5 AWG negative cable, a breather fitting and tube, grommets and a hold-down with wing nuts. If the job is moving a battery to the trunk, only one listing here brings the cables.
What the listings leave unclear
A few gaps deserve daylight. The Allstar listing gives box dimensions but no maximum battery size, so fit is a question the listing does not answer. The Pilida listing states no warranty term and no water resistance either way. The Danti listing’s steel-versus-aluminum mismatch is noted above, and it states no warranty term. The CNRAQR listing gives package dimensions rather than interior dimensions and states no warranty term. On water resistance, two listings state Not Water Resistant outright, while the other two state nothing; none of the four claims a sealed-against-weather code except the CNRAQR bullets’ fully sealed box wording.
Four examples
| # | Product | Solar Score | Buy |
|---|---|---|---|
| 1 |  Allstar ALL76100 Steel Box | 9.5/10 | Buy on Amazon |
| 2 |  CNRAQR Aluminum Box Kit | 9.5/10 | Buy on Amazon |
| 3 |  Pilida Steel Battery Tray | 9.5/10 | Buy on Amazon |
| 4 |  Danti Aluminum Battery Tray | 9.5/10 | Buy on Amazon |
Allstar ALL76100 Steel Box
A lightweight steel battery mounting box measuring 11-3/4 by 7-1/4 inches, with hold-down hardware included, for full-size batteries.
Pros
- Lightweight steel construction is stated
- Hold-down hardware is included
- 11-3/4 by 7-1/4 inch full-size dimensions are stated
- 90-day manufacturer warranty is stated
Cons
- 5.5 pounds is the stated weight
- Not water resistant, per the spec table
- No maximum battery dimensions are stated
- Heavier than the 2.25-pound steel tray here, per the listings
Detailed Review
The listing states a lightweight steel full-size battery mounting box, 11-3/4 inches wide by 7-1/4 inches deep, at 5.5 pounds, with hold-down hardware and mounting hardware included. The spec table states a 90-day manufacturer warranty and notes the box is not water resistant. No contradiction between the title, bullets and spec table was found.
Who it's for: anyone mounting a full-size battery who wants stated steel construction with included hold-down hardware and a stated warranty. Who should skip it: anyone needing a stated maximum battery size or water resistance, which this listing does not provide.
Its Solar Score of 9.5/10 comes from performance 28/35, build 20/25, value 20/25, safety 5/10 and warranty 2/5: 75 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Material | Lightweight steel |
|---|---|
| Size | 11-3/4 x 7-1/4 in |
| Weight | 5.5 pounds |
| Warranty | 90 days |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Hold-down hardware included, per the listing; water resistance: not water resistant, per the listing, so safety scores 5 of 10. 90 days. It does not say everything a buyer needs, such as who pays return shipping, so warranty scores 2 of 5. See How We Pick.
Install it right. Fit shunts, bus bars and fuses within their stated current ratings, follow the wiring order in the manual, and disconnect the battery before you work on any connection.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
CNRAQR Aluminum Box Kit
A complete aluminum battery box relocation kit with 5 AWG cables, breather fitting and hold-down hardware.
Pros
- Complete kit with 16 feet of 5 AWG positive and 3 feet of 5 AWG negative cable
- Breather fitting and tube are included
- Hold-down with wing nuts is included
- Fully sealed box, per the bullets
Cons
- No warranty term is stated
- No water resistance code is stated
- Stated dimensions are package dimensions, not interior
- First listed March 16, 2021, the oldest listing here
Detailed Review
The listing states a complete aluminum battery box relocation kit at 11.08 pounds, with 16 feet of 5 AWG positive cable, 3 feet of 5 AWG negative cable, battery connections, a breather fitting and tube, grommets and a hold-down with wing nuts. The bullets describe it as a fully sealed box for street to race use. No contradiction between the title, bullets and spec table was found.
Who it's for: anyone relocating a battery to the trunk who wants cables, breather hardware and mounting in one listing. Who should skip it: anyone wanting a stated warranty term or interior dimensions, which this listing does not provide.
Its Solar Score of 9.5/10 comes from performance 30/35, build 20/25, value 20/25, safety 7/10 and warranty 0/5: 77 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Material | Aluminum |
|---|---|
| Weight | 11.08 pounds |
| Cables | 16 ft and 3 ft, 5 AWG |
| Extras | Breather fitting and tube |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Breather fitting and tube included, per the listing, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Install it right. Fit shunts, bus bars and fuses within their stated current ratings, follow the wiring order in the manual, and disconnect the battery before you work on any connection.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Pilida Steel Battery Tray
A 2.25-pound carbon steel battery tray with adjustable bolts for batteries up to 10.63 by 7.06 by 7.5 inches, with a corrosion-resistant coating.
Pros
- 2.25-pound stated weight is the lowest here
- Adjustable bolts fit batteries up to 10.63 by 7.06 by 7.5 inches
- Round holes for air circulation and heat dissipation are stated
- Flame-retardant plastic spray coating against rust is stated
Cons
- No warranty term is stated
- No water resistance is claimed
- Compatibility must be checked against battery size before buying, per the bullets
- Manufacturer is listed as Pilida with a generic brand label
Detailed Review
The listing states a carbon steel battery tray at 2.25 pounds with adjustable bolts fitting batteries up to 10.63 by 7.06 by 7.5 inches, round holes for air circulation and heat dissipation, and a flame-retardant plastic spray coating against oxidation, rust and corrosion. The bullets also state the coating's insulating properties prevent the spread of battery leakage. No contradiction between the title, bullets and spec table was found.
Who it's for: anyone wanting the lowest stated weight here with adjustable fit and a stated anti-corrosion coating. Who should skip it: anyone wanting a stated warranty term or water resistance, which this listing does not provide.
Its Solar Score of 9.5/10 comes from performance 28/35, build 21/25, value 20/25, safety 7/10 and warranty 0/5: 76 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Material | Carbon steel, coated |
|---|---|
| Max battery | 10.63 x 7.06 x 7.5 in |
| Weight | 2.25 pounds |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Round holes for air circulation and heat dissipation, per the bullets; coating stated to prevent the spread of battery leakage, so safety scores 7 of 10. No warranty term, so warranty scores zero. See How We Pick.
Install it right. Fit shunts, bus bars and fuses within their stated current ratings, follow the wiring order in the manual, and disconnect the battery before you work on any connection.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
Danti Aluminum Battery Tray
A billet aluminum battery tray sized for Optima 34, D34 and 34M batteries, with 3/8-inch hold-down hardware.
Pros
- Billet aluminum alloy construction is stated
- Sized for Optima 34, D34 and 34M batteries, per the bullets
- 3/8-inch all-thread hold-down hardware is stated
- Rust-proof aluminum, per the bullets
Cons
- No warranty term is stated
- Not water resistant, per the spec table
- Spec table Material field says Steel against the title's aluminum
- Batteries over 7.4 inches tall need longer all-thread, per the bullets
Detailed Review
The listing states a billet aluminum alloy tray for Optima Red Top 34, 34R and 34/78, Yellow Top D34 and D34/78, and Blue Top 34M and D34M batteries, accepting batteries up to 10.5 by 6.95 by 6.7 inches, with 3/8-inch all-thread hold-downs and a stated weight of 1.38 kg. One contradiction: the spec table's Material field says Steel while the title and bullets state aluminum alloy and iron; the title and bullets win, so aluminum stands. The listing also notes batteries over 7.4 inches tall need longer 3/8-16 all-thread.
Who it's for: owners of Optima 34, D34 or 34M batteries who want a rust-proof aluminum tray with heavy-duty hold-downs. Who should skip it: anyone wanting a stated warranty term or water resistance, which this listing does not provide.
Its Solar Score of 9.5/10 comes from performance 29/35, build 21/25, value 19/25, safety 5/10 and warranty 0/5: 74 of 100 points, placed on our 9.2 to 9.8 scale.
Key Specifications
| Material | Billet aluminum alloy |
|---|---|
| Max battery | 10.5 x 6.95 x 6.7 in |
| Weight | 1.38 kg |
| Hardware | 3/8-inch all-thread |
Figures as published on the retailer listing, collected 22 October 2026. Performance figures are manufacturer rated.
Safety and Warranty
What this listing states. Base and top plates with 3/8-inch hold-down hardware, per the listing; not water resistant, per the listing, so safety scores 5 of 10. No warranty term, so warranty scores zero. See How We Pick.
Install it right. Fit shunts, bus bars and fuses within their stated current ratings, follow the wiring order in the manual, and disconnect the battery before you work on any connection.
This is general buying information, not professional advice. Follow each product manual and local rules, and see our Safety Disclaimer.
As an Amazon Associate I earn from qualifying purchases.
Where the points went
The Solar Score weighs performance, build, value, safety and warranty. For battery boxes, safety means solid hold-down hardware, ventilation or breather fittings, and stated water resistance; two listings state Not Water Resistant, and one includes a breather fitting and tube. One of the four states a warranty term: 90 days on the Allstar box, while the other three state none. How we pick explains the weights.
| Product | Solar Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Allstar ALL76100 Steel Box | 9.5 | 28 | 20 | 20 | 5 | 2 |
| CNRAQR Aluminum Box Kit | 9.5 | 30 | 20 | 20 | 7 | 0 |
| Pilida Steel Battery Tray | 9.5 | 28 | 21 | 20 | 7 | 0 |
| Danti Aluminum Battery Tray | 9.5 | 29 | 21 | 19 | 5 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
Steel vs aluminum battery box: which should you choose?
Pick steel for stated strength and mounting
Choose a steel box if the battery sits where vibration and knocks are part of the day: the Allstar brings hold-down hardware and a stated 90-day warranty, and the Pilida brings the lowest stated weight here with adjustable bolts. Steel’s trade is rust, which is why the Pilida’s anti-corrosion coating is stated so prominently. For more box options, see the best battery box for RV.
| If you need | Look at |
|---|---|
| Hold-down hardware in the box | Allstar ALL76100 Steel Box: hold-down hardware included, stated |
| The lowest stated weight | Pilida Steel Battery Tray: 2.25 pounds stated |
| A full relocation kit with cables | CNRAQR Aluminum Box Kit: 16 ft and 3 ft of 5 AWG cable stated |
| A rust-proof tray for an Optima | Danti Aluminum Battery Tray: billet aluminum, Optima sizes stated |
Pick aluminum for rust-proof lightness
Choose aluminum if the box lives in weather or on a boat or trailer where steel would need constant watching. The Danti tray states billet aluminum alloy and iron with rust-proof wording, sized for Optima 34, D34 and 34M batteries. The CNRAQR kit is aluminum as well, at 11.08 pounds with everything for a trunk relocation. Our best battery box for boat has more weather-minded options.
Match the box to the battery first
Before material, check fit: the Pilida fits batteries up to 10.63 by 7.06 by 7.5 inches and the Danti up to 10.5 by 6.95 by 6.7 inches, while the Allstar gives box dimensions without a maximum battery size. A box that cannot close over the battery fails whatever it is made of. For lithium setups, the best battery box for lithium battery compares fitted options.
Sizing Notes
- Match the tray’s stated maximum battery dimensions against your battery’s length, width and height before choosing a side; the Pilida and Danti state theirs, the Allstar does not.
- Weigh the stated box weight against where it mounts: 2.25 pounds for the Pilida tray, 5.5 pounds for the Allstar box, 11.08 pounds for the CNRAQR kit.
- Count the included hardware: hold-downs, thread sleeves, nuts, breather fittings and cable lengths are stated per listing and differ widely.
- Note the stated water resistance: two listings state Not Water Resistant, two state nothing; plan the mounting location accordingly.
FAQ: power away from the grid
Which is stronger, a steel or aluminum battery box?
The listings do not state strength figures, so neither side wins on paper. Steel listings here emphasize mounting hardware and weight, while aluminum listings emphasize rust-proof wording and lower weight.
Do any of these boxes state a warranty?
Only the Allstar Performance box, with a 90-day manufacturer warranty. The other three listings state no warranty term.
Which box fits an Optima battery?
The Danti tray’s bullets state fit for Optima Red Top 34, 34R and 34/78, Yellow Top D34 and D34/78, and Blue Top 34M and D34M.
Which listing includes battery cables?
The CNRAQR aluminum relocation kit, with 16 feet of 5 AWG positive cable and 3 feet of 5 AWG negative cable, plus connections, a breather fitting and tube.
Are these boxes water resistant?
Two listings state Not Water Resistant and two state nothing about water resistance. None of the four states a weather-sealing code.
Which is the lowest stated weight?
The Pilida steel tray at 2.25 pounds. The Allstar box states 5.5 pounds and the CNRAQR kit states 11.08 pounds; the Danti tray states 1.38 kg.
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