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Sealed lead-acid & LiFePO4 replacement batteries
Exact-fit replacements for alarm panels, fire systems, UPS, emergency lighting and mobility — fresh, date-coded and shipped from our US warehouse.
Common size
Many alarm panels take a 12V 7Ah battery with F1 terminals: Casil CA1270. Pick your brand and model to confirm the fit.
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How business accounts work
Casil for Business
One account for your team, priced for volume — built for security and fire installers, facility managers, UPS resellers, mobility dealers and distributors.
Business pricing shows automatically once your account is approved and you sign in.
How Casil for Business works
NFPA 72 date-code ruleFire-alarm lead-acid batteries must be marked with their month and year of manufacture and replaced within 5 years of that date.
Fire alarm control panels
Order by Simplex part number — matched voltage, capacity and terminals, date-coded for your inspection records. 24V panels use two 12V batteries in series, so most sizes ship as matched sets of 2.
| Simplex part | Rating | Casil pack | Price | Add to cart |
|---|---|---|---|---|
| 2081-9272 | 12V 6.2Ah · F1 | Set of 2 | $39.25 | Add |
| 2081-9274 | 12V 10Ah · F2 | Set of 2 | $53.99 | Add |
| 2081-9288 | 12V 12Ah · F2 | Set of 2 | $63.53 | Add |
| 2081-9275 | 12V 18Ah · F2 | Set of 2 | $82.99Out of stock | Call |
| 2081-9287 | 12V 25Ah | Single | $80.00Out of stock | Call |
| 2081-9296 | 12V 50Ah · Nut & Bolt | Single | $109.00Out of stock | Call |
| 2081-9279 | 12V 110Ah | Single | $450.00 | Add |
Lithium LiFePO4
The Casil 12V 100Ah LiFePO4 drops in where a 12V 100Ah deep-cycle AGM sits today: 12.8V nominal, built-in BMS and well under half the weight.
Casil LFP 12V 100Ah
12V100AhLiFePO4
$379.00
Knowledge base
Fitment
Same size, wrong terminal means a second trip. How to tell an F1 (0.187 in) tab from an F2 (0.250 in) tab, and when you need nut-and-bolt posts.
Batteries in this guide
Fire alarm
Every Simplex 2081 part number matched to its Casil replacement, with voltage, capacity, terminals and how many batteries each panel takes.
Batteries in this guide
Battery basics
When a sealed lead-acid battery is the right call, when lithium pays for itself, and what changes with chargers, weight and cold weather.
Batteries in this guide
Help & FAQ
The questions we answer most on the phone. Still not sure? Send us the label off the old battery and we’ll match it.
Match four things from the old battery: voltage, capacity (Ah), terminal type and case size. Enter your device in the battery finder, type the part number printed on the old battery into search, or measure the case with the dimension lookup.
Usually, yes. Keep the same voltage and terminal, and make sure the case fits the cabinet or tray. A higher Ah rating in the same case gives longer runtime; check that your charger or panel can recharge the larger capacity in the time it allows.
Both are flat quick-connect tabs. F1 is 0.187 in (4.75 mm) wide; F2 is 0.250 in (6.35 mm). Your device’s connectors only fit one of them, so match the old battery. Our terminal guide has drawings of each type.
Sealed lead-acid batteries in standby service typically last 3 to 5 years. For fire alarm systems, NFPA 72 requires the month and year of manufacture on the battery and replacement within 5 years of that date. Every Casil battery is date-coded.
Casil sealed lead-acid batteries carry a 1-year pro-rated warranty. Warranty terms for each battery are listed on its product page; see shipping, returns & warranty for how to make a claim.
