OPTI-UPS ES1500C (Tower/RM) UPS High Performance Replacement Battery Set
⚠️ 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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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 | 7.5 Ah
Terminal Type
F2
SigmasTek SP12-7.5HR Replacement Battery Set for OPTI-UPS ES1500C (Tower/RM)
Ensure continuous protection for your OPTI-UPS ES1500C (Tower/RM) with this premium replacement UPS battery set. The kit includes two SigmasTek SP12-7.5HR batteries (12 Volts, 7.5 AH) engineered for consistent, reliable backup power. Whether you're maintaining servers, networking gear, or critical infrastructure, this high-performance UPS battery set helps keep your OPTI-UPS ES1500C (Tower/RM) operating at peak reliability.
Key Specifications
- Compatible UPS model: OPTI-UPS ES1500C (Tower/RM)
- Battery quantity: 2 batteries per set
- Battery model: SigmasTek SP12-7.5HR
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 7.5 Ah
- Terminal type: F2
- Design: High Rate Discharge Design
- Construction: Valve Regulated, Spill Proof
- Self-discharge: Low self-discharge characteristic
- Durability: High vibration resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand new, factory fresh
- Warranty: 1 Year
- Connection note: Use all existing cables and hardware from original configuration to connect new batteries
Benefits
- Robust reliability: Built with valve-regulated, spill-proof construction and high vibration resistance to withstand the rigors of daily UPS duty cycles and server-room environments.
- Long-lasting battery performance: The low self-discharge chemistry preserves capacity over storage and in-service periods, offering long life and dependable replacement performance for your OPTI-UPS ES1500C (Tower/RM).
- High-power readiness: High rate discharge capabilities allow the batteries to supply the surge power needed during short-duration, high-load events—making this a true high-performance UPS battery option.
- Certified safety: U.L. recognized and CE certified to meet industry standards for safety and manufacturing quality.
- Multiple uses: Ideal for UPS systems, emergency power supply setups, and battery-powered tools that require quick bursts of power during operation.
- Tested and supported: All units are tested by experienced staff to ensure compatibility and performance that match or exceed OEM specifications, providing peace of mind when replacing your unit’s batteries.
Don't wait until your OPTI-UPS ES1500C (Tower/RM) fails—replace its batteries with this tested, factory-fresh SigmasTek set. Order today to secure a high-performance, long-lasting battery solution with fast shipping and a 1-year warranty.
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