12V, 100Ah, replacement battery for Johnson Controls Gc12800 with M8 Insert terminals
🔋 This Battery is a Deep Cycle AGM, We Offer This as a replacement rather than a Regular AGM: Why It Matters
Deep cycle AGM batteries are designed for repeated, sustained energy delivery—making them ideal for mobility devices, solar systems, RVs, marine use, and electric vehicles.
| Feature | Deep Cycle AGM | Regular AGM |
|---|---|---|
| Designed For | Frequent deep discharges (50–80%) | Short-term backup or starting |
| Plate Thickness | Thicker plates for durability | Thinner plates |
| Cycle Life | Higher (hundreds to thousands of cycles) | Lower |
| Energy Delivery | Stable over long periods | Short bursts of high current |
| Best For | Mobility, solar, marine, RVs | UPS, vehicle starting |
In summary: If your application requires consistent power through frequent charge/discharge cycles, a deep cycle AGM battery is the smarter, longer-lasting investment.
Please double-check that the batteries you're ordering match the ones in your unit before completing your purchase. We want to make sure you get exactly what you need!
SB121000D - 12V, 100Ah Sealed Lead Acid Battery Replacement for Johnson Controls Gc12800 | 1200Wh High-Capacity Power
High-performance 12V 100Ah Sealed Lead Acid (AGM) battery engineered for dependable backup power, mobility equipment, emergency lighting, UPS systems, solar storage, and other demanding applications. Built to provide reliable long-lasting energy with maintenance-free operation.
Technical Specifications
Key Benefits
- High-Capacity Output: 12V 100Ah performance provides dependable power for demanding backup and mobility applications.
- Maintenance-Free AGM Design: Spill-proof, valve-regulated construction eliminates the need for water top-ups or active maintenance.
- Direct Replacement Fitment: Confirmed as a drop-in replacement for the Johnson Controls Gc12800 battery.
- Heavy-Duty Construction: Rugged ABS casing supports reliable operation in tough environments.
- High Discharge Capability: Rated up to 1000A max discharge current for high-demand use.
- Wide Application Range: Ideal for UPS systems, mobility scooters, emergency lighting, solar systems, telecom, alarms, and more.
- Flexible Installation: M8 insert terminals make integration easier across multiple equipment types.
- Wide Temperature Tolerance: Designed to operate efficiently in varied environmental conditions.
Compatible Models
Johnson Controls
Suitable for a wide range of backup power, mobility, emergency lighting, solar, alarm, and telecom applications where matching size, voltage, and terminal configuration are required.
Replaces Part Numbers
Johnson Controls
Warranty & Returns
- 30-Day Return Policy
- 1-Year Replacement Warranty
Please verify terminal type, dimensions, and fitment before ordering. Minor connector adjustments may be required depending on your existing setup.
Why Choose the SB121000D?
- Canadian Company: Fast, reliable shipping from Canada with dedicated local support.
- Long Runtime: 1200Wh of stored energy supports extended operation between charges.
- Easy Upgrade Path: A practical replacement option for worn or aging high-capacity SLA batteries.
- Versatile Use: Well-suited for both standby and cyclic applications depending on your system requirements.
Important Purchase Notes
- This battery is designed as a replacement for the Johnson Controls Gc12800.
- A different Ah rating can still work as a replacement; the Ah value mainly affects runtime between charges.
- Existing cables are often reusable, though some connector changes may be necessary.
- Always confirm your equipment's physical clearance and terminal requirements before installation.
Reliable High-Capacity Power for Demanding Systems
Choose the SB121000D for dependable high-capacity backup power in UPS systems, mobility equipment, emergency lighting, solar setups, and more. With robust AGM construction, maintenance-free operation, and proven compatibility with the Johnson Controls Gc12800, this battery delivers the performance and reliability needed for critical applications.
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If your order includes multiple heavy products, we recommend requesting a custom quote — we may be able to arrange a better rate with a transport truck!
Please note: We reserve the right to send heavier items by transport truck if the carrier's maximum weight per package is exceeded or if we consider it too risky to place with a courier due to the possibility of damage occurring.
🔋 What’s mAh All About?
🔋 What’s mAh All About?
mAh stands for milliamp hours—basically, how much "fuel" your battery can hold. A higher or lower mAh than your original battery? No worries! 🙌 It won’t affect charging or operation—just means your device might run a bit longer or shorter between charges. Still 100% compatible. Still 100% awesome. 💪✨
Before ordering please read
Before ordering please read
Ensure the original battery model number is mentioned in our product description and verify that your device model number is also listed in the description.
How to Look after your new lithium battery!!
How to Look after your new lithium battery!!
See how to look after your battery if its lithium Lithium Care
Delivery and Shipping
Delivery and Shipping
See our shipping policy and details at this link Shipping Details
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Technical Specifications
| Battery Details | |
|---|---|
| Category | Sealed Lead Acid Battery |
| Battery Type | AGM (Absorbent Glass Mat) |
| Voltage | 12V |
| Capacity | 100Ah |
| Energy | 1200Wh |
| Max Discharge Current | 1000A |
| Internal Resistance | 4.8mΩ |
| Weight | Approx. 31.00kg / 68.34 lbs |
| Dimensions | 306.5mm (L) x 168.5mm (W) x 215mm (H) / 12.07" (L) x 6.63" (W) x 8.46" (H) |
| Operating Temperature | -20°C to 50°C (-4°F to 122°F) |
| Nominal Temperature | 25°C (77°F) |
| Terminal Type | M8 Insert |
| Colour | Black |
| SKU | SB121000D |
| Compatible Brand | |
| Brand | Johnson Controls |
| Compatible OEM Battery Reference | |
| Battery Model | Johnson Controls Gc12800 |
OEM Battery Cross Reference
Confirmed Cross Reference
| Brand | Original Battery | Replacement |
|---|---|---|
| Johnson Controls | Gc12800 | SB121000D |
Payment & Security
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