OPTI-UPS ES1400 / 1400ES UPS High Performance Compatible Replacement Battery Set
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⚠️ Quick Reminder
🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.
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Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
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Battery Care Guide
Battery Care Guide
Battery Usage and Maintenance Guidelines 🔋
Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.
1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱
Initial Charge
- Fully charge the battery overnight prior to first use.
Conditioning (First 2–6 Charge Cycles)
- Operate the device until the battery reaches approximately 20% capacity.
- Avoid premature recharging.
- Do not allow the battery to fully discharge during the initial cycles.
Post-Conditioning
- Recharge the battery only when necessary.
- These batteries are capable of approximately 500 charge cycles:
- Once daily → ~500 days
Twice daily → ~250 days
Note: Even a partial recharge is considered a full cycle.
2. Sealed Lead Acid (SLA) Batteries 💡
- No conditioning required.
- Maintain the battery in a fully charged state; avoid complete discharge.
- Capable of 300–400 charge cycles.
- Expected service life: 2–3 years, depending on usage conditions.
3. Laptop Batteries (Lithium-Ion) 💻
Initial Charge
- Fully charge the battery overnight prior to first use.
Conditioning (First 2–6 Charge Cycles)
- Charge fully, then discharge to approximately 20% capacity.
- Avoid complete discharge, as some devices may not detect a fully drained battery.
Post-Conditioning
- Minimize frequent plugging and unplugging.
- Allow the battery to discharge moderately at least once per month to maintain optimal performance.
- Occasional cycling is recommended to sustain battery health.
Professional Recommendation
Adhering to these guidelines will enhance battery longevity and ensure reliable performance.
For further assistance regarding your battery or order, our customer support team is available to provide guidance.
Delivery and Shipping
Delivery and Shipping
⚡ Everything You Need to Know About Shipping with BatteryWeb (USA)
We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:
🚚 Shipping & Delivery
Most orders ship next business day (some products like sealed lead acid may take a little longer).
Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).
We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.
Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.
Transit times shown are estimates only (business days, no weekends/holidays).
🌍 Shipping Restrictions
Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.
PO Box deliveries are only available via USPS.
At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.
📦 Important Notes
Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.
If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.
💲 Currency & Pricing
All prices are shown in USD.
Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.
⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.
Disclaimer
Disclaimer
⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.
🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.
🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).
Volts & Amps
12 Volts | 12 Ah
Terminal Type
F2
SigmasTek 12 Volts 12 Ah F2 OPTI-UPS — Compatible with ES1400
Specifically matched for the ES1400, the SigmasTek 12 Volts 12 Ah F2 OPTI-UPS replacement battery is designed to return dependable backup power to your system. This product focuses on compatibility, steady performance, and reliable recharge characteristics, making it a practical replacement option for ES1400 units that require renewed runtime. If you're seeking a high-quality swap-out that keeps your infrastructure protected, this replacement UPS battery is a strong candidate.
Key Specifications
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 12 Ah
- Terminal Type: F2
- Compatible UPS Model: ES1400
- Product Type: OPTI-UPS replacement
Benefits
This SigmasTek unit delivers the hallmark benefits of a high-performance UPS battery: consistent output under load, efficient recharge performance, and construction that supports extended service life. As a long-lasting battery solution for the ES1400, it is ideal for keeping network closets, workstations, and home office equipment protected during outages. The F2 terminal ensures a secure connection and simplifies installation for technicians and end users alike.
Durability comes from quality materials and standardized sizing that allow quick, safe replacement with minimal downtime. This battery is an excellent choice for emergency power scenarios where reliability matters—such as alarm systems, point-of-sale devices, or small server setups. It also works well for light tool support and control circuits that rely on steady DC supply.
Because this is a replacement UPS battery tailored to the ES1400, you benefit from an efficient path to restoring your UPS capacity without needing a full system swap. The SigmasTek label and specification data provide assurance that you are installing a unit intended to match the ES1400’s expected electrical profile.
If uptime is critical to your operation, selecting a long-lasting battery like this one helps reduce unexpected interruptions and lowers lifecycle cost by extending the effective lifespan of your current ES1400 UPS.
Purchase today to keep your ES1400 protected—add this high-performance UPS battery to your cart and regain dependable backup power.
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