Best Technologies LI 5.0KVA 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 | 35 AH
Terminal Type
Nut & Bolt
SigmasTek SP12-35 NB Replacement Battery Set for Best Technologies LI 5.0KVA UPS
Restore dependable backup power to your Best Technologies LI 5.0KVA Uninterruptible Power Supply with this compatible replacement UPS battery set. Designed for reliable, high-rate performance, the three-battery kit ensures your LI 5.0KVA returns to full backup capacity so critical loads remain protected during outages. These batteries combine safe construction with tested performance to give your UPS renewed operational life.
Key Specifications
- Brand: SigmasTek
- Model: SP12-35 NB
- Voltage: 12 Volts
- Capacity: 35 AH
- Quantity: 3 batteries per set
- Terminal Type: Nut & Bolt
- Design: High Rate Discharge Design
- Construction: Valve Regulated Spill Proof
- Features: Low Self-discharge
- Features: High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Compatible UPS Model: Best Technologies LI 5.0KVA
Benefits
These replacement batteries are built for long-term reliability and strong short-term power delivery. The high rate discharge design supports applications that require higher power output over brief periods, making this a high-performance UPS battery solution for the Best Technologies LI 5.0KVA. Valve regulated, spill-proof construction ensures safe, maintenance-free operation within confined UPS assemblies, while low self-discharge allows batteries to retain charge well in storage.
High vibration resistance improves longevity and performance in environments where mechanical stress is present. U.L. recognition and CE certification provide assurance of safety and manufacturing quality. Each battery set is brand new, factory fresh, and tested by experienced staff to meet or exceed original manufacturer specifications—resulting in a reliable, long-lasting battery replacement that restores confidence in your UPS backup system.
Typical uses include Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools that require reliable bursts of power. If you need a replacement UPS battery that balances durability, performance, and safety for your Best Technologies LI 5.0KVA, this SigmasTek SP12-35 NB kit is a practical and cost-effective option.
Don’t wait until an outage reveals degraded backup capacity—order this long-lasting, high-performance battery set for your Best Technologies LI 5.0KVA today and enjoy fast shipping plus a 1 year warranty.
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