Description
CDC400-6 | 6V 400Ah L16 Deep Cycle AGM Battery | 2,400Wh | Group L16 / 903 | DT Dual Terminal (5/16″ Stud) | 119.5 lbs (54.2 kg) | Carbon AGM-GEL | UL 1989 Certified
The Canbat 6V 400Ah L16 Deep Cycle AGM Battery is a premium carbon-enhanced AGM-GEL battery engineered for large renewable energy battery banks, off-grid power systems, solar and wind energy storage, and demanding industrial cyclic applications. Built to BCI Group L16 (903) dimensions and rated at 400Ah and 2,400Wh, the CDC400-6 delivers high sustained capacity and exceptional cycle life across repeated deep-discharge cycles where standard general-purpose standby AGM batteries are not designed for repeated deep cycling. Featuring advanced carbon AGM-GEL technology, a self-discharge rate below 2% per month, and a maintenance-free non-spillable design, the CDC400-6 provides dependable deep-cycle performance for large-format 6V battery bank configurations. Certified to UL 1989.
Typical Applications
The CDC400-6 6V 400Ah L16 Deep Cycle AGM Battery is designed for high-capacity cyclic discharge applications where batteries are regularly discharged and recharged as part of normal system operation. Rated at 400Ah at 6V and built to BCI Group L16 (903) dimensions, this 6V 400Ah L16 Deep Cycle AGM Battery is suited to large renewable energy battery banks, off-grid power systems, solar and wind energy storage, RV house battery systems, marine house power, floor scrubbers, aerial work platforms, electric utility vehicles, and industrial cyclic equipment requiring high reserve capacity and reliable repeated cycling. The CDC400-6 is commonly used as a replacement 6V 400Ah deep cycle battery and Group L16 (903) battery in renewable energy systems, off-grid power installations, solar energy storage banks, RV and marine house power, floor cleaning equipment, and industrial cyclic applications.
UL 1989 Certification
UL 1989 certification provides third-party verification of battery safety and performance requirements for sealed lead acid batteries. The CDC400-6 is certified to UL 1989, the Underwriters Laboratories standard covering electrical performance, mechanical integrity, and safety requirements including overcharge tolerance and short circuit protection. Certification is issued following independent third-party laboratory evaluation — not manufacturer self-declaration.
Canbat maintains UL 1989 certification across its sealed lead acid battery lineup, including the CDC deep cycle series.
Carbon AGM-GEL Deep Cycle Construction
The CDC400-6 6V 400Ah L16 Deep Cycle AGM Battery uses advanced carbon-enhanced AGM-GEL construction engineered for extended deep-discharge cycling. The addition of carbon to the negative plate improves charge acceptance and reduces sulfation under partial state-of-charge conditions, while the AGM-GEL electrolyte system delivers stronger cycle performance than standard general-purpose AGM batteries. This combination makes the CDC400-6 particularly well-suited to demanding cyclic duty in renewable energy battery banks, off-grid power systems, and solar energy storage.
The sealed, valve-regulated, non-spillable design eliminates the watering and acid spills associated with flooded L16 batteries while greatly reducing routine gassing under normal operating conditions, and permits installation in any orientation. Unlike flooded deep cycle batteries that require regular electrolyte maintenance, the CDC400-6 is completely maintenance-free, with a self-discharge rate below 2% per month allowing storage up to six months before a refresh charge is required.
Cycle Life & Depth of Discharge
The CDC400-6 6V 400Ah L16 Deep Cycle AGM Battery is engineered for extended deep-discharge cycling, with cycle performance dependent on depth of discharge, charging profile, operating temperature, and maintenance practices. The carbon AGM-GEL construction delivers higher cycle life than standard general-purpose AGM batteries, particularly at shallower discharge depths — operating at 30% depth of discharge (DoD) delivers substantially more cycles than operation at 100% DoD.
| Depth of Discharge (DoD) | Approximate Cycle Life |
| 30% DoD | ~2,500 cycles |
| 50% DoD | ~1,600 cycles |
| 100% DoD | ~400 cycles |
Technical Specifications
| 6V 400Ah L16 Deep Cycle AGM Battery — Specifications (CDC400-6) | |
| Part Number | CDC400-6 |
| Nominal Voltage | 6V |
| Rated Capacity (20hr) | 400Ah |
| Energy | 2,400Wh |
| Battery Group Size | BCI Group L16 (903) |
| Terminal Type | DT Dual Terminal (5/16″ Stud) |
| Technology | Carbon AGM-GEL |
| Container Material | ABS |
| Max Discharge Current (5s) | 1,200A |
| Internal Resistance | Approx. 2.2mΩ |
| Cycle Life (30% DoD) | ~2,500 cycles |
| Self Discharge | <2% per month at 25°C |
| Operating Temp — Discharge | -4°F to 131°F (-20°C to 55°C) |
| Operating Temp — Charge | 32°F to 104°F (0°C to 40°C) |
| Storage Temp | 5°F to 104°F (-15°C to 40°C) |
| Certification | UL 1989 |
Dimensions & Weight
| Physical Specifications | |
| Length | 11.6 in (295 mm) |
| Width | 7.09 in (180 mm) |
| Height | 16.0 in (406 mm) |
| Total Height (with terminals) | 16.9 in (428 mm) |
| Approx. Weight | 119.5 lbs (54.2 kg) |
Canadian-Owned Battery Manufacturer | 24/7 Technical Support | UL 1989 Certified | Nationwide Distribution
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