Best Technologies LI 1050 (Fortress) UPS High Performance Replacement Battery Set
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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 | 9 AH
Terminal Type
F2
Replacement Battery Set for Best Technologies LI 1050 (Fortress) UPS - 4 x SigmasTek SP12-9HR (12V 9AH)
Protect your Best Technologies LI 1050 (Fortress) UPS with a dependable, high-performance replacement UPS battery set. This package contains four SigmasTek SP12-9HR batteries (12 Volts, 9 AH) designed for reliable, high rate discharge operation. These brand new batteries deliver consistent power and a long-lasting battery lifespan to help keep your critical systems online during outages. Note: you must reuse all original cables and hardware to connect the new batteries to your LI 1050 (Fortress).
Key Specifications
- Included Batteries: 4 x SigmasTek SP12-9HR
- Voltage: 12 Volts
- Capacity: 9 AH (Amp-hours)
- Design: High Rate Discharge Design
- Construction: Valve Regulated Spill Proof Construction
- Self-discharge: Low Self-discharge
- Durability: High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Installation Note: Use all existing cables and hardware from original configuration
- Manufacturer/Brand: SigmasTek
Benefits
- Dependable Backup Power: This replacement UPS battery set is tailored for short-term, high-power needs typical of UPS systems. It performs as a high-performance UPS battery for the Best Technologies LI 1050 (Fortress), supplying stable energy during interruptions.
- Robust and Safe: Valve regulated, spill-proof construction and U.L./CE certifications provide safe, dependable operation. High vibration resistance increases longevity in rack and mobile environments.
- Long-Lasting Battery Life: Low self-discharge ensures the batteries hold charge during standby, delivering a long-lasting battery solution that reduces replacement frequency and total cost of ownership.
- Multiple Uses: Ideal for Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools where brief high-rate output is essential.
- Quality Assurance: Every set is factory fresh and tested by our technical team to ensure they meet or exceed OEM performance for your LI 1050 (Fortress).
Order this replacement UPS battery kit for your Best Technologies LI 1050 (Fortress) today to restore reliable power protection. Most in-stock orders ship within 24 hours and come with a 1 year warranty. Need help? Call or e-mail our customer service team for assistance. Purchase now and ensure uninterrupted operation with a proven, high-performance UPS battery solution.
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