SunDale Canada 12V x 100Ah AGM Battery G31 Size

SKU: SD-AGM12-100-G31

Warranty: 1 Year

SunDale Canada 12V 100Ah AGM Deep Cycle Battery – Group 31 (G31)

The SunDale Canada 12V 100Ah AGM Battery (Group 31 / G31) is a valve-regulated lead-acid (VRLA) AGM deep-cycle battery engineered for reliable, long-term performance in extreme Canadian climates. Designed for UPS systems, backup power, solar energy storage, RVs, marine applications, and industrial control systems, this battery delivers honest capacity ratings, strong discharge capability, and predictable cold-weather performance.

Built with Absorbent Glass Mat (AGM) technology, it is maintenance-free, sealed, and spill-proof, making it ideal for indoor and enclosed installations across Canada.

Honest Capacity Ratings – Why Discharge Rate Matters

Battery capacity is not just about the Ah number—it’s about at what discharge rate that capacity is delivered.

SunDale Canada Rates Capacity Transparently

This battery is rated at:

• 100Ah at the 10-hour (C10) rate

• Higher usable capacity at slower rates (e.g., C20)

Many batteries in the market advertise “120Ah” or higher capacities measured at very slow discharge rates such as C100 (100-hour rate).
At these slow rates, batteries appear larger on paper but often deliver significantly less usable energy under real-world inverter, UPS, or backup loads.

By rating capacity at C10, SunDale Canada provides a realistic and honest representation of what users can expect in Canadian backup, solar, and standby applications.

AGM Technology – Better Than Traditional Flooded Lead-Acid

This battery uses AGM (Absorbent Glass Mat) VRLA technology, where the electrolyte is fully absorbed into fiberglass mats.

Advantages of AGM for Canadian Use

✔ Maintenance-free (no watering)
✔ Sealed & spill-proof
✔ Safer for indoor installations
✔ Lower internal resistance
✔ Better voltage stability under load
✔ Improved vibration resistance
✔ Lower self-discharge

AGM batteries are especially well-suited for cold climates, enclosed power rooms, and standby power systems.

Extreme Cold-Weather Performance (Canada-Ready)

Temperature has a major impact on lead-acid battery performance. The SunDale Canada AGM G31 battery is designed for extreme Canadian winters.

• Operational discharge capability down to –40°C

• At –20°C, the battery retains approximately 50% of its rated capacity at a 0.2C discharge rate

• Stable discharge behavior in cold environments compared to flooded lead-acid batteries

This predictable cold-weather performance makes it suitable for:

• Northern Canadian regions

• Unheated garages and sheds

• Remote and rural backup systems

• Telecommunications and utility applications

Temperature Ranges

• Discharge temperature: –40°C to +45°C

• Charge temperature: –4015°C to +45°C

• Storage temperature: –10°C to +45°C

(As with all lead-acid batteries, charging performance is best maintained above freezing.)

Electrical & Performance Specifications

• Nominal Voltage: 12V

• Rated Capacity: 100Ah @ C10

• Cells per Unit: 6

• Max Discharge Current: 1000A (5 seconds)

• Maximum Charging Current: 20A

• Internal Resistance: Low, optimized for high-current loads

• Design Life: 15 years (float service)

• Self-Discharge: <3% per month @ 25°C

Charging Parameters (AGM-Optimized)

• Float Voltage: 13.6–13.8V @ 25°C

• Cycle Voltage: 14.2–14.4V @ 25°C

• Temperature Compensation:

  • Float: –3 mV/°C/cell

  • Cycle: –4 mV/°C/cell

Compatible with AGM-capable chargers, UPS systems, inverters, and solar charge controllers.

Group 31 (G31) Size – Industry-Standard Fitment

This battery follows the BCI Group 31 (G31) standard, commonly used across Canadian industrial, RV, marine, and backup systems.

• Length: 12.9 in (328 mm)

• Width: 6.77 in (172 mm)

• Height: 8.46 in (215 mm)

• Total Height: 8.66 in (220 mm)

Ideal for drop-in replacement of existing Group 31 batteries with no enclosure modifications required.

Typical Canadian Applications

• UPS and critical backup systems

• Solar energy storage

• RVs, trailers, and campers

• Marine and utility power

• Telecommunications equipment

• Industrial control systems

• Emergency standby power

Why Choose SunDale Canada AGM Batteries?

• Designed for Canadian climates

• True 100Ah at C10 rate (not inflated C100 marketing)

• Reliable performance down to –40°C

• Maintenance-free AGM construction

• Long 15-year float design life

• Standard Group 31 (G31) fitment

• Excellent value vs premium AGM brands

Why Buy From Us (Canada)?

We specialize in solar, backup power, and energy storage solutions across Canada. Our team helps customers choose batteries based on real discharge rates, temperature behavior, and practical performance, not marketing exaggeration.

If you’re looking for a Group 31 AGM battery in Canada that delivers honest capacity, extreme cold tolerance, and dependable long-term performance, the SunDale Canada 12V 100Ah AGM G31 is a proven choice.