Description
CBL85-12 | 12V 85Ah Sealed Lead Acid Battery | 1,020Wh | Group 24 | T11 (M8 Threaded Insert) | 52.47 lbs (23.8 kg) | Lead Calcium Alloy | UL 1989 Certified
The Canbat 12V 85Ah SLA battery is a valve-regulated sealed lead acid (VRLA) AGM battery designed for high-capacity standby and light cyclic applications requiring extended runtime, high reserve capacity, and reliable high-current delivery. Featuring lead calcium alloy plate construction and absorbent glass mat (AGM) technology, the battery delivers maintenance-free operation, a self-discharge rate below 2% per month, and reliable float and cyclic performance across a 20+ year design floating life at 20°C. Built to BCI Group 24 dimensions and rated at 85Ah and 1,020Wh, the CBL85-12 is fitted with T11 (M8 lug) terminals suited to commercial UPS systems, solar backup power systems, backup power systems and renewable energy backup applications, fire alarm systems, and industrial standby power applications. Certified to UL 1989.
Typical Applications
The CBL85-12 12V 85Ah SLA battery is designed for high-capacity standby and light cyclic applications where extended runtime, high reserve capacity, and heavy-duty terminal connections are required. Rated at 85Ah (C20) at 12V and built to BCI Group 24 dimensions, this 12V 85Ah SLA battery is suited to commercial UPS systems, solar backup power systems, backup power systems and renewable energy backup applications, and industrial standby power applications. Typical deployment includes UPS backup power systems, telecommunications infrastructure, solar backup power systems, backup power systems and renewable energy backup applications, fire alarm systems, emergency lighting systems, industrial standby power systems, building automation controls, security systems, floor scrubbers, aerial work platforms, and electric industrial equipment. The CBL85-12 is commonly used as a replacement 12V 85Ah SLA and AGM battery and Group 24 battery in UPS systems, solar installations, off-grid power systems, floor scrubbing equipment, fire alarm systems, and emergency lighting installations.
UL 1989 Certification
UL 1989 certification provides third-party verification of battery safety and performance requirements commonly specified for Canadian commercial and institutional installations. Certified batteries are frequently selected for fire alarm, emergency lighting, telecommunications, security, and standby power systems where engineers, contractors, and Authorities Having Jurisdiction (AHJs) require documented product certification.
The CBL85-12 is certified to UL 1989, the Underwriters Laboratories standard for sealed lead acid batteries, 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.
VRLA AGM Construction
The CBL85-12 12V 85Ah SLA battery uses valve-regulated absorbent glass mat (AGM) construction, with electrolyte immobilized within puncture resistant micro-porous glass mat separators. The sealed recombinant cell design prevents acid emission under normal operating conditions and permits installation in any orientation. Lead calcium alloy plate construction eliminates watering requirements, reduces gassing, and supports low self-discharge performance. Batteries stored at 25°C may be held up to six months before a refresh charge is required; storage at elevated temperatures reduces this interval.
Technical Specifications
| 12V 85Ah SLA Battery — Specifications (CBL85-12) | |
| Part Number | CBL85-12 |
| Nominal Voltage | 12V |
| Rated Capacity (C20) | 85Ah |
| Energy | 1,020Wh |
| Battery Group Size | BCI Group 24 |
| Terminal Type | T11 (M8 Threaded Insert) |
| Container Material | ABS |
| Plate Construction | Lead Calcium Alloy |
| Max Discharge Current (5s) | 800A |
| Internal Resistance | Approx. 6.2mΩ |
| Design Floating Life at 20°C | 20+ Years |
| Self Discharge | <2% per month at 25°C |
| Operating Temp — Discharge | 5°F to 122°F (-15°C to 50°C) |
| Operating Temp — Charge | -4°F to 104°F (-20°C to 40°C) |
| Storage Temp | 5°F to 104°F (-15°C to 40°C) |
| Certification | UL 1989 |
Dimensions & Weight
| Physical Specifications | |
| Length | 10.24 in (260 ± 2 mm) |
| Width | 6.61 in (168 ± 2 mm) |
| Container Height | 8.19 in (208 ± 2 mm) |
| Total Height (with terminal) | 8.43 in (214 ± 2 mm) |
| Approx. Weight | 52.47 lbs (23.8 kg) |
Canadian-Owned Battery Manufacturer | 24/7 Technical Support | UL 1989 Certified | Nationwide Distribution


Jack M –
I have one of these in my boat and it is still working perfectly after 6 months of use.
David L. –
Purchase this battery to replace my old MCA FCD 12-85 battery and I’m impressed by the performance, especially considering the competitive price and the free shipping!
Jenny R. –
My old MCA 12V 85AH group 24 deep cycle battery died and I’ve been looking for a replacement. I’ve been told by one supplier that the MCA 85Ah battery has been discontinued, I came across the Canbat 85Ah and purchased it for a much more competitive price, and it’s Canadian! the purchase was easy and delivery to my door at no charge. Battery works great so far and I’m happy with my purchase.