








🔋 Power Up with Confidence — The Ultimate 4D Battery Fortress!
The NOCO HM408 is a rugged, commercial-grade battery box designed specifically for group 4D batteries. Featuring a four corner fastening system, captive lid, and large cable entry holes, it ensures secure installation and easy access for heavy gauge cables. Its full flow ventilation system and acid reservoir protect battery health by safely releasing gases and collecting acid. Built to withstand extreme temperatures down to -40°F and resist UV, acid, oil, and gas exposure, this battery box meets stringent USCG and ABYC safety certifications, making it ideal for marine, RV, automotive, and commercial applications.








| Manufacturer | NOCO |
| Brand | NOCO |
| Model | HM408 |
| Item Weight | 7.7 pounds |
| Product Dimensions | 24.7 x 9.6 x 14 inches |
| Item model number | HM408 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | HM408 |
| Special Features | Battery Box for 4D Batteries, Captive Lid Hold-Down, Four Corner Fastening System, Full Flow Ventilation |
| Voltage | 12 Volts |
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