Attwood 9082-1
Compact battery box · Vented
A smaller enclosure for U1-format batteries; check the terminal position before fitting the lid.
Attwood PowerGuard Battery Boxes: Group Size & Venting Guide
Battery group numbers are a good starting point for selecting a protective enclosure, but they are not a substitute for measuring the battery and terminals. Attwood PowerGuard boxes cover compact U1 batteries, Group 24 and 27 sizes, and longer Group 29/31 applications. The most important choice is the right interior clearance, secure hold-down and approved venting arrangement.
Measure the entire battery installation
1. Identify the battery groupCheck the label for U1, 24/24M/24F, 27/27F/27M or 29/31. Then measure the actual battery because case shapes and terminal arrangements vary.
2. Include terminals and cablesCompare the battery's full height with the lid's clearance. Keep room for cable bends, post protection and the box's mounting hardware.
3. Confirm the venting requirementsCheck the battery and boat/RV manufacturer's enclosure requirements. Attwood's 9069-1 is a non-vented Group 24 version, explicitly not intended for marine use.
Vented versus non-vented: Attwood 9065-1 and 9069-1 are both Group 24 PowerGuard boxes, but they have different covers. The manufacturer states that the non-vented 9069 cover is not for marine use. A vented cover is not a substitute for proper battery-compartment ventilation.
Attwood battery box dimensions and group chart
The outside dimensions are measured with the lid fitted. Compare the actual battery's length and width with the interior and leave suitable clearance around the terminals and battery cables. Figures below follow Attwood's published PowerGuard model chart.
| MPN | Battery group | Cover | Outside size (L × W × H) | Max height with terminals | Product |
|---|---|---|---|---|---|
| 9082-1 | U1 | Vented | 11 × 7½ × 8½ in | 7⅞ in with terminals | View |
| 9065-1 | 24 / 24M / 24F | Vented | 14 × 9⅝ × 10⅝ in | 10⅛ in with terminals | View |
| 9069-1 | 24 / 24M / 24F | Non-vented | 14 × 9⅝ × 10⅝ in | 10⅛ in with terminals | View |
| 9067-1 | 27 / 27F / 27M | Vented | 16⅞ × 9⅝ × 10⅞ in | 10½ in with terminals | View |
| 9084-1 | 29 / 31 | Vented | 18⅞ × 9¼ × 10¼ in | 9¾ in with terminals | View |
The manufacturer's stated interior footprints are 9082-1: 8¼ × 5½ in; 9065-1: 10⅝ × 7 in; 9069-1: 10⅝ × 7 in; 9067-1: 13¹⁄₁₆ × 6¹⁵⁄₁₆ in; 9084-1: 15⁷⁄₁₆ × 6¹⁵⁄₁₆ in. Exterior size alone does not establish clearance for cable routing, a battery monitor or other accessories.
Compare the PowerGuard battery boxes
Each of these five parts has its own MPN and product listing. Attwood specifies acid-resistant polypropylene construction, hold-down straps and mounting hardware for this PowerGuard range; compare the exact package and enclosure size before ordering.
Attwood 9065-1
Standard group 24 box · Vented
Vented black PowerGuard enclosure for commonly used Group 24-format batteries.
Attwood 9069-1
Non-vented group 24 box · Non-vented
Attwood specifically identifies the non-vented 9069 cover as not for marine use.
Attwood 9067-1
Group 27 battery box · Vented
A larger vented enclosure for Group 27-format batteries; check terminal clearance and cable routing.
Attwood 9084-1
Large group 29/31 box · Vented
Longer housing for Group 29/31-format batteries with its own maximum lid/terminal clearance.
Attwood battery box selection questions
Is Group 24 the same as Group 27?
No. Group 27 enclosures are longer, and each battery's dimensions must be compared with the actual internal space. Do not select by battery voltage alone.
Can I use the non-vented 9069-1 on a boat?
Attwood specifically identifies the non-vented 9069 PowerGuard cover as not intended for marine use. Check the battery manufacturer's enclosure requirements for other applications as well.
Does a battery box include the battery or cables?
These are protective battery boxes, not batteries. They include a hold-down strap and mounting hardware, but do not include the battery itself or a charging cable.
Will every Group 31 battery fit the 9084-1?
Not necessarily. Check the battery's actual overall length, width and terminal height against the published internal envelope and any required cable clearance before ordering.
More battery and electrical reference pages
- Moeller Marine Battery Boxes: Group 24, 27–31 & 4D
- RV Battery Compartment Fuse, Switch, Relay & Busbar Identification
Follow your battery manufacturer's installation and ventilation instructions, along with any applicable marine or RV electrical standards.
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