SunDale Canada 12V 75Ah AGM Deep Cycle Battery – Group 24 (G24)
The SunDale Canada 12V 75Ah AGM Battery (Group 24 / G24) is a maintenance-free, sealed deep-cycle battery engineered for reliable performance in Canadian climates. Built using Absorbent Glass Mat (AGM) technology, it delivers dependable power for backup systems, solar storage, RVs, marine applications, and off-grid setups, with transparent capacity ratings and real-world performance.
Designed in the standard BCI Group 24 (G24) form factor, this battery is a direct drop-in replacement for many existing Group 24 AGM and lead-acid batteries used across Canada.
True Capacity Ratings – Understanding Ah & Discharge Rates
Battery performance is not just about the Ah number—it’s about at what discharge rate that capacity is delivered. Many batteries on the market advertise higher Ah values measured at very slow discharge rates, which can exaggerate real-world performance.
How SunDale Canada Rates Capacity (Clear & Honest)
The SunDale Canada 12V 75Ah AGM battery is rated at the 10-hour (C10) discharge rate, which represents a higher and more demanding load than slower ratings such as C20 or C100.
This means the battery delivers 75Ah under more realistic operating conditions, making it well suited for:
Some competing batteries advertise higher Ah numbers—such as “100Ah” or “120Ah”—based on very slow discharge rates like C100.
C100 means the battery is discharged slowly over 100 hours, representing an extremely light load that does not reflect how batteries are typically used in real-world applications. While these numbers may look larger on paper, the usable capacity under normal inverter, RV, solar, or backup loads is often significantly lower.
By comparison, a 75Ah rating at the 10-hour (C10) rate is a more honest and practical indicator of real-world performance.
Discharge Behaviour & Real-World Performance
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Higher current draw reduces effective capacity (true for all lead-acid batteries)
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AGM batteries handle higher discharge rates more efficiently than flooded lead-acid
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Lower internal resistance results in less voltage drop under load
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More stable performance for inverters, UPS systems, and solar storage
This makes the SunDale AGM Group 24 battery well suited for real-world Canadian power needs, not just laboratory conditions.
What Is AGM? (And Why It’s Better Than Traditional Lead-Acid)
AGM (Absorbent Glass Mat) batteries are sealed lead-acid batteries where the electrolyte is absorbed into fiberglass mats between the plates.
Advantages of AGM Over Flooded Lead-Acid Batteries
✔ Maintenance-free – no watering or electrolyte checks
✔ Sealed & spill-proof – safer for indoor and enclosed installations
✔ Lower internal resistance – better efficiency under load
✔ Improved vibration resistance – ideal for RVs and mobile use
✔ Faster charging acceptance
✔ Better cold-weather performance
Unlike flooded lead-acid batteries, AGM batteries do not off-gas during normal operation, making them safer and easier to install in a wide range of applications.
Built for Canadian Temperatures & Conditions
Temperature has a major impact on battery performance and lifespan. The SunDale Canada AGM Group 24 battery is designed specifically with Canadian use in mind, including cold-weather reliability.
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Discharge temperature range: -15°C to +45°C
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Charge temperature range: -15°C to +45°C
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Storage temperature range: -10°C to +45°C
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Low self-discharge: <3% per month at 25°C
As with all lead-acid batteries, usable capacity decreases as temperatures drop. At -20°C, this AGM battery is designed to retain approximately 50% of its nominal capacity, which is typical and expected behaviour for AGM chemistry in cold conditions.
Compared to flooded lead-acid batteries, AGM technology offers lower internal resistance and reduced voltage sag, resulting in more stable output in cold environments. This makes the battery suitable for:
Group 24 (G24) Size – Easy Drop-In Replacement
This battery follows the standard BCI Group 24 (G24) form factor, allowing for simple, no-modification replacement in many existing systems, including:
Ideal Applications
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Solar energy storage systems
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Backup power during outages
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RVs, trailers, and campers
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Marine and utility systems
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Off-grid cabins and rural properties
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UPS and inverter setups
Why Choose SunDale Canada AGM Batteries?
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Canadian-focused brand
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75Ah rated at the 10-hour (C10) discharge rate
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Transparent, real-world performance expectations
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Proven AGM reliability
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Maintenance-free ownership
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Standard Group 24 (G24) fitment
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Excellent value compared to premium AGM brands
SunDale Canada AGM batteries are built for customers who want usable power—not inflated specifications.
Why Buy from Solar Super Store (Canada)?
Solar Super Store is a Canadian solar and battery specialist, supplying AGM, lithium, and solar storage solutions across Canada. We help customers choose the right battery for their application, fitment, and climate, with expert guidance and real-world system knowledge.
