Moeller Marine Battery Boxes: Group 24, 27–31 & 4D

A marine battery box must fit more than the battery's group number. Its internal space, terminal clearance, lid and restraint system must all suit the actual battery and the boat or RV installation. Moeller offers different box sizes for common battery groups, plus a separate nylon restraint strap. Use the exact product number and measure the battery before ordering.

Choose a battery enclosure by group and actual dimensions

Group 24 and Group 27–31 boxesMoeller 042213 is the Group 24 enclosure supplied with mounting hardware. The larger 042214 is listed for Group 27–31 batteries and has a catalog outside footprint of approximately 16⅝ × 9⅝ inches. Group labels indicate common size families, not an assurance that every manufacturer's battery has the same terminal layout or lid clearance.
Group 4D box and retaining strapMoeller 042204 is intended for the larger 4D battery family. Its catalog exterior size is approximately 23¾ × 12½ × 14⅝ inches. The 042217-10 is an accessory restraint strap with nylon webbing and stainless-steel hardware; it is not a substitute for a suitably sized enclosure or approved hold-down arrangement.

Moeller battery box and restraint MPN chart

Exact part Size category Function What to check
042213 Group 24 Single Group 24 battery enclosure Polyethylene box with lid retention and mounting hardware
042214 Group 27–31 Single battery box for the listed group range Catalog outside dimensions: 16⅝ × 9⅝ × 10½ in; measure actual battery
042204 Group 4D Larger battery enclosure for selected 4D batteries Catalog outside dimensions: 23¾ × 12½ × 14⅝ in; confirm interior and lid clearance
042217-10 Strap accessory Battery-box restraint strap, not a battery box Black nylon strap with stainless-steel hardware; confirm required length
Outside dimensions are not battery clearance. Use the manufacturer's internal fit dimensions for the exact enclosure and compare the complete battery's length, width and height including posts, cables and terminal covers. The nominal group size alone does not confirm fit. Keep all cable entries and lid openings clear.

Measure and secure the battery properly

  1. Read the battery's full label. Record group size, chemistry, voltage, overall dimensions and terminal orientation. Check the battery manufacturer's installation instructions.
  2. Measure the available tray. Compare the box's exterior footprint with the compartment, surrounding access and any nearby wiring or plumbing. Allow room to remove the lid for maintenance.
  3. Confirm internal height. The posts and insulated connections must not contact the lid. Do not use an undersized enclosure by forcing its cover shut.
  4. Check restraints. A box must be properly secured against motion. Confirm whether the exact package includes lid hold-down components and whether a separate strap is appropriate. Do not assume 042217-10 fits every Moeller box.
  5. Consider venting and chemistry. Ventilation and enclosure requirements differ for flooded lead-acid, AGM and lithium batteries. Follow the battery, vessel and applicable electrical standards rather than treating a vented plastic box as a universal battery installation solution.
  6. Protect electrical connections. Use suitable cable routing, terminal protection and overcurrent devices. Isolate all battery power before making changes and consult a qualified marine electrician for uncertain installations.

Does the box include the battery?

No. These listings are for empty protective battery enclosures or the separate restraint accessory. A battery, charger and electrical cabling are not included unless an exact listing explicitly says otherwise. The listed battery box size is not a replacement guide for selecting a battery's electrical capacity.

Shop Moeller enclosures and retaining strap

These cards open exact UsedRVParts.ca listings. Check the current condition and availability of each item; the store sells both new and used parts. Eligible used items may be inspected or picked up by appointment in Kelowna.

Related marine equipment references

If you are working on a boat's portable fuel system, see our separate Moeller portable fuel-tank reference. Fuel-tank accessories and battery enclosures serve different installation and safety requirements.

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