Casil CA640 6v 4ah Rechargeable Sealed Lead Acid Battery Battery
- In stock · Order by 3 PM ET, ships same business day from our US warehouse
- Free shipping on this battery · Shipping details
- Fresh stock, date-coded on the label — you know exactly how old it is
- 1-year pro-rated warrantyTerms on every listing
- Free shippingOn most batteries
- Ships from US warehousePacked and shipped from US stock
- Fresh, date-coded stockEvery battery date-stamped
- Talk to a person973-500-6828
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- Voltage
- 6V
- Capacity
- 4Ah
- Size (in)
- 2.76 × 1.85 × 4.17
- Weight
- 2 lb
- Type
- SLA / AGM
Does this fit my model?
Overview
The 6V 4Ah battery for emergency lights and exit signs
Casil CA640 6v 4AH Rechargeable Sealed Lead Acid Alarm Battery is a 6V 4Ah rechargeable sealed lead acid (SLA/AGM) battery built for dependable, maintenance-free replacement power. Its sealed AGM/VRLA design is suited for standby and cyclic applications.
Applications: home security systems, alarm panels, access control, backup power.
Fit Check: Confirm voltage, amp-hour rating, dimensions, terminal type and polarity against your original battery before purchase.
Popular Search Terms: 6V 4Ah battery, 6 volt 4 amp hour battery, rechargeable SLA battery, sealed lead acid battery, AGM battery, battery replacement, alarm battery, security system battery.
- Maintenance-free AGM (VRLA)Sealed and spill-proof — no watering, no acid to top up.
- Standard case size2.76 × 1.85 × 4.17 in.
- Fresh, date-coded stockMonth and year printed on the label for your service records.
- 1-year pro-rated warrantyBacked by Casil USA, with phone support at 973-500-6828.
Specifications
Full specifications
| Model | Casil CA640 |
|---|---|
| Brand | Casil |
| SKU | 640-1-1X |
| Nominal voltage | 6V |
| Rated capacity | 4Ah |
| Chemistry | Sealed lead-acid, AGM (VRLA) |
| Length × width × height | 2.76 × 1.85 × 4.17 in (70 × 47 × 106 mm) |
| Weight | 2 lb (0.91 kg) |
| Maintenance | Maintenance-free, spill-proof |
| Used in | Emergency Lighting & Exit Signs, Alarm & Security, Ride-On Toys & Scooters, Game Feeders & Outdoor, UPS & Backup Power |
| Warranty | 1-year pro-rated |
| Condition | New |
| Shipping | Free shipping · ships from our US warehouse |
Dimensions
Dimension drawing
Drawn to scale from the listed dimensions. Terminal positions are shown for reference — check the polarity marks on your old battery.
Compatibility
Where it’s used
Used in Emergency Lighting & Exit Signs, Alarm & Security, Ride-On Toys & Scooters, Game Feeders & Outdoor, UPS & Backup Power. Match voltage (6V), capacity (4Ah), size and terminal to the battery you are replacing.
Shipping & warranty
Shipping, returns & warranty
Shipping
Free shipping on this battery. Order by 3 PM ET and it ships the same business day from our US warehouse.
Shipping detailsReturns
Ordered the wrong size? Check the return window and how to send a battery back before you ship it.
Returns policyWarranty
1-year pro-rated warranty. Keep your order number — the date code on the label shows when the battery was made.
Warranty termsBuying 25 or more?
Get a written quote with business pricing for installers, facilities and resellers.
Request a quoteFAQ
Before you swap it
Not sure it matches your old battery? Our team checks part numbers every day.
Will this fit my device?
Match the voltage (6V), capacity (4Ah), size (2.76 × 1.85 × 4.17 in) and terminal to your old battery, or use the fit check at the top of this page.
How often should it be replaced?
Sealed lead-acid batteries in standby equipment such as alarm panels, fire panels and UPS units are typically replaced every 3–5 years, or sooner if the system reports a low battery or fails its load test. The date code on the label shows when the battery was made.
Can I use a battery with more amp-hours?
Usually, if the voltage, case size and terminals match: more amp-hours means longer runtime. Check that it fits the compartment and that your charger can recharge it in the time your system requires.
How does it ship?
Shipping is free on this battery. Orders placed by 3 PM ET ship the same business day from our US warehouse. See shipping details.
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Casil CA640 6v 4ah Rechargeable Sealed Lead Acid Battery Battery
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