Casil CA1233 12V 3AH 3.3ah 3.4ah Replacement Battery for APC Back-UPS ES350
- 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
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Does this fit my model?
Overview
About this battery
Casil CA1233 12V 3AH 3.3ah 3.4ah Replacement Battery for APC Back-UPS ES350 is a 12V 3Ah 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: UPS battery backup, computer backup power, network equipment, emergency power.
Compatible / Cross-Reference Searches: APC. Match voltage, capacity, dimensions, terminal type and polarity before ordering; listed models are cross-reference search terms, not OEM affiliation claims.
Fit Check: Confirm voltage, amp-hour rating, dimensions, terminal type and polarity against your original battery before purchase.
Popular Search Terms: 12V 3Ah battery, 12 volt 3 amp hour battery, rechargeable SLA battery, sealed lead acid battery, AGM battery, battery replacement, UPS battery backup, APC replacement battery.
Specifications
Full specifications
| Brand | Casil |
|---|---|
| SKU | ups-CA1233-TROY-1000-1X |
| Width × depth × height | 5.25 × 2.63 × 2.36 in |
| Shipping weight | 2.00 LBS |
| Warranty | 1 year Pro Rated Warranty |
| Condition | New |
| Shipping | Free shipping · ships from our US warehouse |
Compatibility
Where it’s used
Match voltage, capacity, 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, capacity, size 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
Casil CA1233 12V 3AH 3.3ah 3.4ah Replacement Battery for APC Back-UPS ES350
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